>after having received a lukewarm and laconic response from the HackerOne triage team.
A slight digression but lol, this is my experience with all of the bug bounty platforms. Reporting issues which are actually complicated or require an in depth understanding of technology are brickwalled, because reports of difficult problems are written for .. people who understand difficult problems and difficult technology. The runarounds are not worth the time for people who try to solve difficult problems because they have better things to do.
At least cloudflare has a competent security team that can step in and say "yeah, we can look into this because we actually understand our whole technology". It's sad that to get through to a human on these platforms you have to effectively write two reports: one for the triagers who don't understand the technology at all, and one for the competent people who actually know what they're doing.
There is definitely a miss-alignment of incentives with the bug bounty platforms. You get a very large number of useless reports which tends to create a lot of noise. Then you have to sift through a ton of noise to once in a while get a serious report. So the platforms up-sell you on using their people to sift through the reports for you. Only these people do not have the domain knowledge expertise to understand your software and dig into the vulnerabilities.
If you want the top-teir "hackers" on the platforms to see your bug bounty program then you have to pay the up-charge for that too, so again miss-alignment of incentives.
The best thing you can do is have an extremely clear bug-bounty program detailing what is in scope and out of scope.
Lastly, I know it's difficult to manage but open source projects should also have a private vulnerability reporting mechanism set up. If you are using Github you can set up your repo with: https://docs.github.com/en/code-security/security-advisories...
The backstory here, of course, is that the overwhelming majority of reports on any HackerOne program are garbage, and that garbage definitely includes 1990s sci.crypt style amateur cryptanalyses.
> Please read it and let me know and I'm very sorry for the last report :) also please don't close it as N/A and please don't publish it without my confirm to do not harm my Reputation on hacker on community
I was 90% sure it was a troll too, but based on this second report I'm not so sure anymore.
Had the same experience last time I attempted to report an issue on Hacker One. Triage did not seem to actually understand the issue and insisted on needing a PoC they could run themselves that demonstrated the maximum impact for some reason, even though any developer familiar with the actual code at hand could see the problem in about ten seconds. Ended up writing to some old security email I found for the company to look at the report and they took care of it one day later, so good ending I guess.
This was about an issue in a C++ RPC framework not validating object references are of the correct type during deserialization from network messages, so the actual impact is kind of unbounded.
IMO it’s no wonder companies keep getting hacked when doing the right thing is made so painful and the rewards are so meagre. And that’s assuming that the company even has a responsible disclosure program or you risk putting your ass on the line.
I don’t like bounty programs. We need Good Samaritan laws that legally protect and reward white hats. Rewards that pay the bills and not whatever big tech companies have in their couch cushions.
> We need Good Samaritan laws that legally protect and reward white hats.
What does this even mean? How is the a government going to do a better job valuing and scoring exploits than the existing market?
I'm genuinely curious about how you suggest we achieve
> Rewards that pay the bills and not whatever big tech companies have in their couch cushions.
So far, the industry has tried bounty programs. High-tier bugs are impossible to value and there is too much low-value noise, so the market converges to mediocrity, and I'm not sure how having a government run such a program (or set reward tiers, or something) would make this any different.
And, the industry and governments have tried punitive regulation - "if you didn't comply with XYZ standard, you're liable for getting owned." To some extent this works as it increases pay for in-house security and makes work for consulting firms. This notion might be worth expanding in some areas, but just like financial regulation, it is a double edged sword - it also leads to death-by-checkbox audit "security" and predatory nonsense "audit firms."
For the protections part: it means creating a legal framework in which white hats can ethically test systems without companies having a responsible disclosure program. The problem with responsible disclosure programs is that the companies with the worst security don't give a shit and won't have such a program. They may even threaten such Good Samaritans for reporting issues in good faith, there have been many such cases.
For the rewards part: again, the companies who don't have a shit won't incentivise white hat pentesting. If a company has a security hole that leads to disclosure of sensitive information, it should be fined, and such fines can be used for rewards.
This creates an actual market for penetration testing that includes more than just the handful of big tech companies willing to participate. It also puts companies legally on the hook for issues before a security disaster occurs, not after it's already happened.
Sure, I'm all for protection for white hats, although I don't think is at all relevant and don't see this as a particularly prominent practical problem in the modern day.
> If a company has a security hole that leads to disclosure of sensitive information, it should be fined
What's a "security hole"? How do you determine the fines? Where do you draw the line for burden of responsibility? If someone discovers a giant global issue in a common industry standard library, like Heartbleed, or the Log4J vulnerability, and uses it against you first, were you responsible for not discovering that vulnerability and mitigating it ahead of time? Why?
> such fines can be used for rewards.
So we're back to the award allocation problem.
> This creates an actual market for penetration testing that includes more than just the handful of big tech companies willing to participate.
Yes, if you can figure out how to determine the value of a vulnerability, the value of a breach, and the value of a reward.
You have correctly identified there is more complexity to this than is addressable in a HN comment. Are you asking me to write the laws and design a government-operated pentesting platform right here?
It's pretty clear whatever security 'strategy' we're using right now doesn't work. I'm subscribed to Troy Hunt's breach feed and it's basically weekly now that another 10M, 100M records are leaked. It seems foolish to continue like this. If governments want to take threats seriously a new strategy is needed that mobilises security experts and dishes out proper penalties.
> You have correctly identified there is more complexity to this than is addressable in a HN comment. Are you asking me to write the laws and design a government-operated pentesting platform right here?
My goal was to learn whether there was an insight beyond "we should take the thing that doesn't work and move it into the government where it can continue to not work," because I'd find that interesting.
You're (thankfully) never going to get a legal framework that allows "white hats" to test another person's computer without their permission.
There's a reason Good Samaritan laws are built around rendering aid to injured humans: there is no equivalent if you go down the street popping peoples' car hoods to refill their windshield wiper fluid.
Companies get hacked because Bob in finance doesn't have MFA and got a phishing email. In my experience working for MSP's it's always been phishing and social engineering. I have never seen a company comprised from some obscure bug in software. This may be different for super large organizations that are international targets, but for the average person or business, you're better off spending time just MFAing everything you can and using common sense.
Just to clarify: if Bob in Finance doesn't have phishing-resistant MFA, that's an organizational failure that's squarely homed in the IT and Infosec world.
> IMO it’s no wonder companies keep getting hacked when doing the right thing is made so painful and the rewards are so meagre.
Show me the incentives, and I'll show you the outcomes.
We really need to make security liabilities to be just that: liabilities. If you are running 20+ year-old code, and you get hacked, you need to be fined in a way that will make you reconsider security as a priority.
Also, you need to be liable for all of the disruption that the security breach caused for customers. No, free credit monitoring does not count as recompense.
Why is it inherently desirable that society penalize companies that get hacked above and beyond people choosing not to use their services, or selling off their shares, etc?
Because they were placed in a position of trust and failed. Typically, the failure stems from a lack of willingness to expend the resources necessary to prevent the failure.
It'd be one thing if these were isolated incidents, but they're not.
Furthermore, the methods you mention simply aren't effective. Our economy is now so consolidated that many markets only have a handful of participants offering goods or services, and these players often all have data and computer security issues. As for divestiture, most people don't own shares, and those who do typically don't know they own shares of a specific company. Most shareholders in the US are retirement or pension funds, and they are run by people who would rather make it impossible for the average person to bring real consequences to their holdings for data breaches, than cause the company to spend money on fixing the issues that allow for the breaches to begin with. After all, it's "cheaper".
I feel like this kind of justification comes up every time this topic is on HN: that the reason companies aren't being organically penalized for bad IT/infosec/privacy behavior is because the average person doesn't have leverage or alternatives.
It's never made sense to me.
I can see that being true in specific instances: many people in the US don't have great mobility for residential ISPs, or utility companies. And there's large network effects for social media platforms. But if any significant plurality of users cared about the impact of service breaches, or bad privacy policies, surely we'd see the impact somewhere in the market? We do in some related areas: Apple puts a ton of money into marketing about keeping people's data and messages private. WhatsApp does the same. But there are so many companies out there, lots of them have garbage security practices, lots of them get compromised, and I'm struggling to remember any example of a consumer company that had a breach and saw any significant impact.
To pick an example: in 2014 Home Depot had a breach of payment data. Basically everywhere that has Home Depots also has Lowes and other options that sell the same stuff. In most places, if you're pissed at Home Depot for losing your card information, you can literally drive across the street to Lowes. But it doesn't seem like that happened.
Is it possible that outside of tech circles where we care about The Principle Of The Thing, the market is actually correct in its assessment of the value for the average consumer business of putting more money into security?
I love this idea, but I feel like it just devolves into ways to classify that 'specific exploit' is/isn't technically a 0-day, so they can/can't be held liable
Side note: what a nice background gradient those guys put into that website! It goes from dark sky blue to dry desert soil at the bottom. Nice artistic touch.
Does the “don’t implement your own cryptography” advice apply to multi-billion companies, or it’s just for regular, garden variety developers?
Some of the issues like validating input seem like should have been noticed. But of course one would need to understand how it works to notice it. And certainly, in a company like CF someone would know how this is supposed to work…
Surely the devs would have at least opened wikipedia to read
> In order to avoid small subgroup attacks,[6] all points are verified to lie in an N-torsion subgroup of the elliptic curve, where N is specified as a 246-bit prime dividing the order of the group.
So should they have opted for an inexistent implementation of FourQ in Go so they don't have to roll their own (keeping in mind this is a library for experimental deployment of PQ and ECC)?
They should have found someone who knows what they are doing or not implement it at all. We're talking about a company with a $1B+ yearly revenue here.
They put their name behind it https://blog.cloudflare.com/introducing-circl/ and it looks like whoever they hired to do the work couldn't even read the wikipedia page for the algorithm.
User-supplied EC point validation is one of the most basic yet crucial steps in a sound implementation. I wonder why no one (and no tests) at CloudFlare caught these carelessnesses pre-signoff and pre-release.
The article's deep dive into the math does it a disservice IMO, by making this seem like an arcane and complex issue. This is an EC Cryptography 101 level mistake.
Reading the actual CIRCL library source and README on GitHub: https://github.com/cloudflare/circl makes me see it as just fundamentally unserious, though; there's a big "lol don't use this!" disclaimer and no elaboration about considerations applied to each implementation to avoid common pitfalls, mention of third or first-party audit reports, or really anything I'd expect to see from a cryptography library.
It's more subtle than that and is not actually that simple (though the attack is). The "modern" curve constructions pioneered by Bernstein are supposed to be misuse-resistant in this regard; Bernstein popularized both Montgomery and Edwards curves. His two major curve implementations are Curve25519 and Ed25519, which are different mathematical representations of the same underlying curve. Curve25519 famously isn't vulnerable to this attack!
Here's an idea, from a parallel universe: Cloudflare should have been forced, by law, to engage a third party neutral auditor/pentester, and fix or mitigate each finding, before being authorised to expose the CIRCL lib in public.
After that, any CVE opened by a member of the public, and subsequently confirmed by a third party neutral auditor/pentester, would result in 1) fines to Cloudflare, 2) award to the CVE opener, and 3) give grounds to Cloudflare to sue their initial auditor.
A more charitable interpretation could be "seems like you want large corporations, which have the financial means, to take security seriously and build a respectable process before publishing security solutions whatever the license".
If you bought a car and your dealer had you sign an EULA with that sentence in it (pertaining specifically to the security features of your car), would you feel safe to ride it at highway speeds?
If I went to a lot that had a sign at the entrance saying "Open Source Cars, feel free to open the hood and look to learn stuff. No warranty implied. Some may not function. All free to duplicate, free to take parts from, and free to take home", and then took a car from the lot and drove it home, no I would not be surprised if it fell apart before getting out of the lot.
When you purchase a car, you pay actual money, and that adds liability, so if it implodes I feel like I can at least get money back, or sue the vendor for negligence. OSS is not like that. You get something for free and there is a big sign saying "lol have fun", and it's also incredibly well known that software is all buggy and bad with like maybe 3 exceptions.
> If you bought a car and your dealer had you sign an EULA with that sentence in it (pertaining specifically to the security features of your car)
If the security features are implemented in software, like "iOS app unlock", no I would not expect it to actually be secure.
It is well known that while the pure engineering disciplines, those that make cars and planes and boats, mostly know what they're doing... the software engineering industry knows how to produce code that constantly needs updates and still manages to segfault in so much as a strong breeze, even though memory safety has been a well understood problem for longer than most developers have been alive.
> then took a car from the lot and drove it home, no I would not be surprised if it fell apart before getting out of the lot.
Congrats, the brakes failed, you caused bodily damage to an innocent bystander. Do you take full responsibility for that? I guess you do.
Now build a security solution that you sell to millions of users. Have their private data exposed to attackers because you used a third party library that was not properly audited. Do you take any responsibility, beyond the barebones "well I installed their security patches"?
> It is well known that while the pure engineering disciplines, those that make cars and planes and boats, mostly know what they're doing... the software engineering industry knows how to produce code that constantly needs updates and still manages to segfault in so much as a strong breeze, even though memory safety has been a well understood problem for longer than most developers have been alive.
We're aligned there. In a parallel universe, somehow we find a way to converge. Judging by the replies and downvotes, not on this universe.
Speaking to US laws, auto manufacturers are required to fix design bugs that cause safety issues regardless of warranty or used status, at no cost to the owner. You may be familiar with the standard name for those fixes, "recalls". It's illegal to sell a vehicle with unresolved recalls, though the government deliberately avoids enforcing that as aggressively as they could.
It's a very different system from software's "NO WARRANTY OF ANY KIND".
What? We're talking about a free open source library (that I happen to use). Nobody who writes and publishes software for free should be subject to any such regulations. That's why the licenses all contain some "provided as is, no warranty" clause.
Otherwise, nobody would ever write non-commercial cryptographic libraries any longer. Why take the risk? (And good luck with finding bugs in commercial, closed source cryptographic libraries and getting them fixed...)
Taking the parallel-universe idea a bit further: for-profit actors must accept financial accountability for the open source software they engage with, whereas not-for-profit actors are exempt or even incentivised.
Build an open-source security solution as an individual? Well done you, and maybe here's a grant to be able to spend more of your free time on it, if you choose to do so.
Use an open-source security solution to sell stuff to the public and make a profit? Make sure you can vouch for the security, otherwise no profit for you.
No thanks, that would kill my one-man software business before I have even started selling a single product, and I'd also have to withdraw every open source repository I have on Github.If you want to pay 10 times more for software and make sure only large corporations sell it to you, your plan is fantastic. Otherwise, not so great.
What do you mean, practices from safety-critical industries applied to security? Unpossible! (end /s)
For that you need regulation that enforces it. On a global scale it is pretty difficult, since it's a country-by-country thing... If you say e.g. for customers in the US, then US Congress needs to pass legislation on that. Trend is however to install backdoors everywhere, so good luck with that.
>after having received a lukewarm and laconic response from the HackerOne triage team.
A slight digression but lol, this is my experience with all of the bug bounty platforms. Reporting issues which are actually complicated or require an in depth understanding of technology are brickwalled, because reports of difficult problems are written for .. people who understand difficult problems and difficult technology. The runarounds are not worth the time for people who try to solve difficult problems because they have better things to do.
At least cloudflare has a competent security team that can step in and say "yeah, we can look into this because we actually understand our whole technology". It's sad that to get through to a human on these platforms you have to effectively write two reports: one for the triagers who don't understand the technology at all, and one for the competent people who actually know what they're doing.
There is definitely a miss-alignment of incentives with the bug bounty platforms. You get a very large number of useless reports which tends to create a lot of noise. Then you have to sift through a ton of noise to once in a while get a serious report. So the platforms up-sell you on using their people to sift through the reports for you. Only these people do not have the domain knowledge expertise to understand your software and dig into the vulnerabilities.
If you want the top-teir "hackers" on the platforms to see your bug bounty program then you have to pay the up-charge for that too, so again miss-alignment of incentives.
The best thing you can do is have an extremely clear bug-bounty program detailing what is in scope and out of scope.
Lastly, I know it's difficult to manage but open source projects should also have a private vulnerability reporting mechanism set up. If you are using Github you can set up your repo with: https://docs.github.com/en/code-security/security-advisories...
The useless reports are because there are a lot of useless people
AI generated bounty report spam is a huge problem now.
The best thing you can do is to include an exploit when it is possible, so this can be validated automatically and clear the noise.
The backstory here, of course, is that the overwhelming majority of reports on any HackerOne program are garbage, and that garbage definitely includes 1990s sci.crypt style amateur cryptanalyses.
> 1990s sci.crypt style amateur cryptanalyses
Just for fun, do you happen to have any links to public reports like that? Seems entertaining if nothing else.
Most people don't make their spam public, but I did when I ran this bounty program:
https://hackerone.com/paragonie/hacktivity?type=team
The policy was immediate full disclosure, until people decided to flood us with racist memes. Those didn't get published.
Some notable stinkers:
https://hackerone.com/reports/149369
https://hackerone.com/reports/244836
https://hackerone.com/reports/115271
https://hackerone.com/reports/180074
This is great to see, much appreciated for the disclosure!
That last one has to be a troll, holy shit.
From another bogus report from the same actor: https://hackerone.com/reports/180393
> Please read it and let me know and I'm very sorry for the last report :) also please don't close it as N/A and please don't publish it without my confirm to do not harm my Reputation on hacker on community
I was 90% sure it was a troll too, but based on this second report I'm not so sure anymore.
I like the bit where he tried to get paid by Hackerone for the bug you reported:
Had the same experience last time I attempted to report an issue on Hacker One. Triage did not seem to actually understand the issue and insisted on needing a PoC they could run themselves that demonstrated the maximum impact for some reason, even though any developer familiar with the actual code at hand could see the problem in about ten seconds. Ended up writing to some old security email I found for the company to look at the report and they took care of it one day later, so good ending I guess.
This was about an issue in a C++ RPC framework not validating object references are of the correct type during deserialization from network messages, so the actual impact is kind of unbounded.
IMO it’s no wonder companies keep getting hacked when doing the right thing is made so painful and the rewards are so meagre. And that’s assuming that the company even has a responsible disclosure program or you risk putting your ass on the line.
I don’t like bounty programs. We need Good Samaritan laws that legally protect and reward white hats. Rewards that pay the bills and not whatever big tech companies have in their couch cushions.
> We need Good Samaritan laws that legally protect and reward white hats.
What does this even mean? How is the a government going to do a better job valuing and scoring exploits than the existing market?
I'm genuinely curious about how you suggest we achieve
> Rewards that pay the bills and not whatever big tech companies have in their couch cushions.
So far, the industry has tried bounty programs. High-tier bugs are impossible to value and there is too much low-value noise, so the market converges to mediocrity, and I'm not sure how having a government run such a program (or set reward tiers, or something) would make this any different.
And, the industry and governments have tried punitive regulation - "if you didn't comply with XYZ standard, you're liable for getting owned." To some extent this works as it increases pay for in-house security and makes work for consulting firms. This notion might be worth expanding in some areas, but just like financial regulation, it is a double edged sword - it also leads to death-by-checkbox audit "security" and predatory nonsense "audit firms."
For the protections part: it means creating a legal framework in which white hats can ethically test systems without companies having a responsible disclosure program. The problem with responsible disclosure programs is that the companies with the worst security don't give a shit and won't have such a program. They may even threaten such Good Samaritans for reporting issues in good faith, there have been many such cases.
For the rewards part: again, the companies who don't have a shit won't incentivise white hat pentesting. If a company has a security hole that leads to disclosure of sensitive information, it should be fined, and such fines can be used for rewards.
This creates an actual market for penetration testing that includes more than just the handful of big tech companies willing to participate. It also puts companies legally on the hook for issues before a security disaster occurs, not after it's already happened.
Sure, I'm all for protection for white hats, although I don't think is at all relevant and don't see this as a particularly prominent practical problem in the modern day.
> If a company has a security hole that leads to disclosure of sensitive information, it should be fined
What's a "security hole"? How do you determine the fines? Where do you draw the line for burden of responsibility? If someone discovers a giant global issue in a common industry standard library, like Heartbleed, or the Log4J vulnerability, and uses it against you first, were you responsible for not discovering that vulnerability and mitigating it ahead of time? Why?
> such fines can be used for rewards.
So we're back to the award allocation problem.
> This creates an actual market for penetration testing that includes more than just the handful of big tech companies willing to participate.
Yes, if you can figure out how to determine the value of a vulnerability, the value of a breach, and the value of a reward.
You have correctly identified there is more complexity to this than is addressable in a HN comment. Are you asking me to write the laws and design a government-operated pentesting platform right here?
It's pretty clear whatever security 'strategy' we're using right now doesn't work. I'm subscribed to Troy Hunt's breach feed and it's basically weekly now that another 10M, 100M records are leaked. It seems foolish to continue like this. If governments want to take threats seriously a new strategy is needed that mobilises security experts and dishes out proper penalties.
> You have correctly identified there is more complexity to this than is addressable in a HN comment. Are you asking me to write the laws and design a government-operated pentesting platform right here?
My goal was to learn whether there was an insight beyond "we should take the thing that doesn't work and move it into the government where it can continue to not work," because I'd find that interesting.
None of this has anything to do with the story we're commenting on; this kind of vulnerability research has never been legally risky.
You're (thankfully) never going to get a legal framework that allows "white hats" to test another person's computer without their permission.
There's a reason Good Samaritan laws are built around rendering aid to injured humans: there is no equivalent if you go down the street popping peoples' car hoods to refill their windshield wiper fluid.
Legal protections have absolutely nothing to do with 'the existing market'.
Yes, and my question is both genuine and concrete:
What proposed regulation could address a current failure to value bugs in the existing market?
The parent post suggested regulation as a solution for:
> Rewards that pay the bills and not whatever big tech companies have in their couch cushions.
I don't know how this would work and am interested in learning.
Companies get hacked because Bob in finance doesn't have MFA and got a phishing email. In my experience working for MSP's it's always been phishing and social engineering. I have never seen a company comprised from some obscure bug in software. This may be different for super large organizations that are international targets, but for the average person or business, you're better off spending time just MFAing everything you can and using common sense.
Just to clarify: if Bob in Finance doesn't have phishing-resistant MFA, that's an organizational failure that's squarely homed in the IT and Infosec world.
Absolutely. It's extremely common with small and midsize businesses that don't have any IT on staff.
> IMO it’s no wonder companies keep getting hacked when doing the right thing is made so painful and the rewards are so meagre.
Show me the incentives, and I'll show you the outcomes.
We really need to make security liabilities to be just that: liabilities. If you are running 20+ year-old code, and you get hacked, you need to be fined in a way that will make you reconsider security as a priority.
Also, you need to be liable for all of the disruption that the security breach caused for customers. No, free credit monitoring does not count as recompense.
Why?
Why is it inherently desirable that society penalize companies that get hacked above and beyond people choosing not to use their services, or selling off their shares, etc?
Because they were placed in a position of trust and failed. Typically, the failure stems from a lack of willingness to expend the resources necessary to prevent the failure.
It'd be one thing if these were isolated incidents, but they're not.
Furthermore, the methods you mention simply aren't effective. Our economy is now so consolidated that many markets only have a handful of participants offering goods or services, and these players often all have data and computer security issues. As for divestiture, most people don't own shares, and those who do typically don't know they own shares of a specific company. Most shareholders in the US are retirement or pension funds, and they are run by people who would rather make it impossible for the average person to bring real consequences to their holdings for data breaches, than cause the company to spend money on fixing the issues that allow for the breaches to begin with. After all, it's "cheaper".
I feel like this kind of justification comes up every time this topic is on HN: that the reason companies aren't being organically penalized for bad IT/infosec/privacy behavior is because the average person doesn't have leverage or alternatives.
It's never made sense to me.
I can see that being true in specific instances: many people in the US don't have great mobility for residential ISPs, or utility companies. And there's large network effects for social media platforms. But if any significant plurality of users cared about the impact of service breaches, or bad privacy policies, surely we'd see the impact somewhere in the market? We do in some related areas: Apple puts a ton of money into marketing about keeping people's data and messages private. WhatsApp does the same. But there are so many companies out there, lots of them have garbage security practices, lots of them get compromised, and I'm struggling to remember any example of a consumer company that had a breach and saw any significant impact.
To pick an example: in 2014 Home Depot had a breach of payment data. Basically everywhere that has Home Depots also has Lowes and other options that sell the same stuff. In most places, if you're pissed at Home Depot for losing your card information, you can literally drive across the street to Lowes. But it doesn't seem like that happened.
Is it possible that outside of tech circles where we care about The Principle Of The Thing, the market is actually correct in its assessment of the value for the average consumer business of putting more money into security?
I love this idea, but I feel like it just devolves into ways to classify that 'specific exploit' is/isn't technically a 0-day, so they can/can't be held liable
From what I understand these aya the triagers are AI, but the bug reports are AI as well :o)
Side note: what a nice background gradient those guys put into that website! It goes from dark sky blue to dry desert soil at the bottom. Nice artistic touch.
Is FourQ used enough for anyone to be affected by this?
The only use listed at https://en.wikipedia.org/wiki/FourQ is "FourQ is implemented in the cryptographic library CIRCL, published by Cloudflare."
Does the “don’t implement your own cryptography” advice apply to multi-billion companies, or it’s just for regular, garden variety developers?
Some of the issues like validating input seem like should have been noticed. But of course one would need to understand how it works to notice it. And certainly, in a company like CF someone would know how this is supposed to work…
Surely the devs would have at least opened wikipedia to read
https://en.wikipedia.org/wiki/FourQ
> In order to avoid small subgroup attacks,[6] all points are verified to lie in an N-torsion subgroup of the elliptic curve, where N is specified as a 246-bit prime dividing the order of the group.
So should they have opted for an inexistent implementation of FourQ in Go so they don't have to roll their own (keeping in mind this is a library for experimental deployment of PQ and ECC)?
They should have found someone who knows what they are doing or not implement it at all. We're talking about a company with a $1B+ yearly revenue here.
They put their name behind it https://blog.cloudflare.com/introducing-circl/ and it looks like whoever they hired to do the work couldn't even read the wikipedia page for the algorithm.
Both Kris and Armando have PhDs in cryptography. The issues here are a lot more subtle than that wiki article makes it seem.
User-supplied EC point validation is one of the most basic yet crucial steps in a sound implementation. I wonder why no one (and no tests) at CloudFlare caught these carelessnesses pre-signoff and pre-release.
The article's deep dive into the math does it a disservice IMO, by making this seem like an arcane and complex issue. This is an EC Cryptography 101 level mistake.
Reading the actual CIRCL library source and README on GitHub: https://github.com/cloudflare/circl makes me see it as just fundamentally unserious, though; there's a big "lol don't use this!" disclaimer and no elaboration about considerations applied to each implementation to avoid common pitfalls, mention of third or first-party audit reports, or really anything I'd expect to see from a cryptography library.
It's more subtle than that and is not actually that simple (though the attack is). The "modern" curve constructions pioneered by Bernstein are supposed to be misuse-resistant in this regard; Bernstein popularized both Montgomery and Edwards curves. His two major curve implementations are Curve25519 and Ed25519, which are different mathematical representations of the same underlying curve. Curve25519 famously isn't vulnerable to this attack!
> FourQ [...] Its name is derived from the four dimensional Gallant–Lambert–Vanstone scalar multiplication,
Funny if that's true.
The backstory on the name is --- I think --- a lot funnier. Read it out loud fast.
Oh, my God, I'm just now remembering why this curve was called FourQ.
This smells like bugdoor to me..
This is a pretty good write up, but took more than the suggested 2 minutes to read.
Here's an idea, from a parallel universe: Cloudflare should have been forced, by law, to engage a third party neutral auditor/pentester, and fix or mitigate each finding, before being authorised to expose the CIRCL lib in public.
After that, any CVE opened by a member of the public, and subsequently confirmed by a third party neutral auditor/pentester, would result in 1) fines to Cloudflare, 2) award to the CVE opener, and 3) give grounds to Cloudflare to sue their initial auditor.
But that's just a mental experiment.
People really just go on the internet and say stuff.
Code is speech. Speech is protected (at least in the US).
Seems like you want open source software to die.
A more charitable interpretation could be "seems like you want large corporations, which have the financial means, to take security seriously and build a respectable process before publishing security solutions whatever the license".
All software is a security solution in one way or another. If open sourcing something risked massive liability no one would do it.
The license reads: 'THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"'.
If you bought a car and your dealer had you sign an EULA with that sentence in it (pertaining specifically to the security features of your car), would you feel safe to ride it at highway speeds?
If I went to a lot that had a sign at the entrance saying "Open Source Cars, feel free to open the hood and look to learn stuff. No warranty implied. Some may not function. All free to duplicate, free to take parts from, and free to take home", and then took a car from the lot and drove it home, no I would not be surprised if it fell apart before getting out of the lot.
When you purchase a car, you pay actual money, and that adds liability, so if it implodes I feel like I can at least get money back, or sue the vendor for negligence. OSS is not like that. You get something for free and there is a big sign saying "lol have fun", and it's also incredibly well known that software is all buggy and bad with like maybe 3 exceptions.
> If you bought a car and your dealer had you sign an EULA with that sentence in it (pertaining specifically to the security features of your car)
If the security features are implemented in software, like "iOS app unlock", no I would not expect it to actually be secure.
It is well known that while the pure engineering disciplines, those that make cars and planes and boats, mostly know what they're doing... the software engineering industry knows how to produce code that constantly needs updates and still manages to segfault in so much as a strong breeze, even though memory safety has been a well understood problem for longer than most developers have been alive.
> then took a car from the lot and drove it home, no I would not be surprised if it fell apart before getting out of the lot.
Congrats, the brakes failed, you caused bodily damage to an innocent bystander. Do you take full responsibility for that? I guess you do.
Now build a security solution that you sell to millions of users. Have their private data exposed to attackers because you used a third party library that was not properly audited. Do you take any responsibility, beyond the barebones "well I installed their security patches"?
> It is well known that while the pure engineering disciplines, those that make cars and planes and boats, mostly know what they're doing... the software engineering industry knows how to produce code that constantly needs updates and still manages to segfault in so much as a strong breeze, even though memory safety has been a well understood problem for longer than most developers have been alive.
We're aligned there. In a parallel universe, somehow we find a way to converge. Judging by the replies and downvotes, not on this universe.
Every used car sold outside of the major brand's certified used car programs is "As Is". So yeah, I would.
Speaking to US laws, auto manufacturers are required to fix design bugs that cause safety issues regardless of warranty or used status, at no cost to the owner. You may be familiar with the standard name for those fixes, "recalls". It's illegal to sell a vehicle with unresolved recalls, though the government deliberately avoids enforcing that as aggressively as they could.
It's a very different system from software's "NO WARRANTY OF ANY KIND".
Lol based on what law? They're doing nothing illegal. Insane take
What? We're talking about a free open source library (that I happen to use). Nobody who writes and publishes software for free should be subject to any such regulations. That's why the licenses all contain some "provided as is, no warranty" clause.
Otherwise, nobody would ever write non-commercial cryptographic libraries any longer. Why take the risk? (And good luck with finding bugs in commercial, closed source cryptographic libraries and getting them fixed...)
Taking the parallel-universe idea a bit further: for-profit actors must accept financial accountability for the open source software they engage with, whereas not-for-profit actors are exempt or even incentivised.
Build an open-source security solution as an individual? Well done you, and maybe here's a grant to be able to spend more of your free time on it, if you choose to do so.
Use an open-source security solution to sell stuff to the public and make a profit? Make sure you can vouch for the security, otherwise no profit for you.
No thanks, that would kill my one-man software business before I have even started selling a single product, and I'd also have to withdraw every open source repository I have on Github.If you want to pay 10 times more for software and make sure only large corporations sell it to you, your plan is fantastic. Otherwise, not so great.
What do you mean, practices from safety-critical industries applied to security? Unpossible! (end /s)
For that you need regulation that enforces it. On a global scale it is pretty difficult, since it's a country-by-country thing... If you say e.g. for customers in the US, then US Congress needs to pass legislation on that. Trend is however to install backdoors everywhere, so good luck with that.