Just a rumour of a bug is enough to find a security exploit these days
Just the rumour of a bug is enough to find an exploit these days
Anil Madhavapeddy, maintainer of the OCaml cohttp library, recounts how a private bug report became public within minutes, leading to automated probes and a rapid exploit. He argues that with AI agents, the mere hint of a vulnerability is sufficient to generate working exploits, making traditional embargoes obsolete. He proposes a mix of private patch development, continuous shipping, and proactive virtual patching to defend open-source ecosystems.
Given that just the rumour of a security issue seems enough to give attackers enough info to find new exploits, we're going to need to change the way we deal with security responses in open source.
- nickcw
This describes my life as an open source maintainer at the moment!
In the first 10 years of the rclone project we received about 20 security disclosures through GitHub. We had to deal with over 40 in the last month! That has taken a huge amount of my time, even using AI tools to triage and come up with fixes for review.
The hit rate for those security disclosures is pretty good - about 75% of them have a nugget of something which needs looking at. The configurations for rclone have got increasingly unlikely so I'm hoping they will dry up eventually.
I was considering just merging the fixes straight to master just to make my life easier rather than holding a dozen independent security fixes on branches and merging them at the point release and hoping not to have too many conflicts to fix up. I've decided to stick with the process for the moment.
GitHub assigns CVEs for the advisories. Before the AI apocalypse they took 2-3 days for an assignment but now it they are running at 3-4 weeks so I have to send the point releases out with CVE-PENDING in the changelog which isn't ideal.
Not sure what the solution is, but it is definitely a problem for us.
- godelski
It's easier to find bugs, fix them, yet there's less will than ever. My bosses just want speed and will give me a 30 minute lecture on why I don't need to solve a bug that Claude solved in 5 minutes, I've verified, and it's already in an open PR. All the while we're pushing out bugs faster and faster.
No matter how good AI gets at fixing bugs we'll never fix them when there's no will to fix things. Software will never be good if there's no will to make good software. The problem has always been about will. To many better products. It's insane that in a time where we can do better on speed and quality we still choose speed and tell ourselves it's velocity
- bri3d
I don't think this is new with LLMs (finding an exploit based on a few words offhand has always been a fun part of exploit development), but it's scaled and democratized to mass exploitation of low value targets. Backing exploit PoCs out of patches, commit messages, and random overheard or over-read sentences is a practice as old as vulnerability research. The difference with LLMs is that an explosion in actors "skilled enough" (human or not) has enabled sloppy / low-skill "exploit the whole Internet" actors in a way they weren't previously enabled.
I do agree with the author's ideas, though; most of these are things that should have been done much sooner, and I suppose it's good in a sense that there is a forcing factor now.
- stephbook
I think roll-out and deployment are even bigger issues. Who updates their software stack within 10 minutes? Most CI runs take longer to verify the business logic is still working.
Add to that the danger of supply-chain attacks where you don't even want automatic updates.
- rndhouse
I built a tool that monitors commits and tries to detect silent bug fixes. With GPT-5.5-class models, it can identify fixes hidden within otherwise routine commits quite reliably. Obfuscating the code changes enough to avoid detection is difficult.
I have heard of at least one project (c-lightning?) temporarily releasing a closed-source binary as a workaround until users could update safely.
- ChrisMarshallNY
Sadly, it seems that the lesson from this, is to keep your repos private.
I am not a fan of that, but I think many folks will take that away from this.
- jameshart
I do wonder what the hit rate is in general for Claude finding a successful exploit when prompted with a rumor that leads it to assume the bug is there.
“I’m told there’s a path traversal exploit in this package. Can you find it?” - probably a reasonably high chance of it finding one, even if you just made that rumor up.
- janpeuker
I do get the anxiety about new bugs but to be honest I fear more that in a few years it's so cheap to fix medium to high security bugs that lowkey hacking and finding worrying privacy violations becomes prohibitively expensive for citizens.