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itszn

@itszn13

Amy | Security researcher @ OpenAI | stackchk.fail/ctf.txt | bsky: nyanbox.stackchk.fail | LLM ART: bsky.app/profile/altern…
she/her Joined June 2011
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itszn @itszn13
GPT-6 Cyber is our latest model for vulnerability research and redteaming

Combining Astra’s innate capabilities with training designed and inspired by the work of our vulnerability research team including @ky1ebot @daveaitel @halvarflake @clintgibler and many others!
kylebot Verified account @ky1ebot 4d
This is the "upcoming cyber model" from yesterday. Besides 948 Linux vulns, it found 111 renderer RCEs in Firefox, among which, 81 were novel. 30 were exploits for bugs known to developers that were thought to be unexploitable.
We are using this technology to scan more OSS projects and secure the Internet infrastructure.
This is just a start.
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itszn @itszn13
Great work by @ky1ebot

The most interesting part of this was seeing the model discover new previously unknown exploitation techniques

Since we ask it to exploit every single bug it is stuck with some very constrained limited bugs which require very creative thinking to pull off
OpenAI Verified account @OpenAI 5d
Our security researchers built an autonomous cyber vulnerability discovery, exploitation, and patching pipeline.

In a single run with an upcoming cyber model, it validated and generated patches for 948 local privilege escalation vulnerabilities in the Linux kernel at a total API cost of $1.2 million.
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itszn @itszn13
Firefox 159.0 just fixed 41 sechigh vulnerabilities found by me and @ky1ebot

Most of these leads to code exec in the renderer!

Along side a heroic effort from the Mozilla security team to secure Firefox with agents!

One of many projects we are working to harden, more to come
7 replies 22 reposts 165 likes 12K views View on X
itszn @itszn13
The critical Brotli RCE vulnerability discovery came out of our large scale infrastructure code scanning efforts

Great research by @k_tr4n and @_sy1vi3 in assessing the widespread impact of this bug

Update your Node.js, Bun, Envoy, anything using Brotli ASAP!
OpenAI Verified account @OpenAI Oct 23
During this red-teaming exercise, we also found a vulnerability that allows for unauthenticated remote code execution in Brotli, a widely-deployed compression library included in many pieces of software such as Node.js, Bun, and Envoy.

The flaw could let an attacker run their own code on affected systems by sending or replying with malicious compressed data, without any need to create a user account. That is, an unpatched server that accepts compressed input could be taken over by a malicious client, and an unpatched client that accepts compressed input (such as “curl --compressed”) could be taken over by a malicious server.

This root cause issue was actually fixed in the Brotli source code in February, but it wasn’t known at the time that it gave rise to a security vulnerability and there was no more recent release of Brotli. Since Brotli is built into other software, any software which includes this library needs to take the update too, followed by the users of that software. We disclosed the vulnerability to Brotli and other downstream projects such as Node.js, which released or are currently releasing security updates, and Brotli cut new release versions and published a CVE.

More details on the patch and mitigations below:
patchtheplanet.org/brotli
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itszn @itszn13
php2shell is the most consequential vulnerability I have ever helped discover. I am proud of how our team worked closely in coordination with the PHP Foundation to provide support and to harden the patch in preparation for this release.

Please read more about our approach:
OpenAI Verified account @OpenAI Oct 21
OpenAI models helped researchers—operating as part of our Patch the Planet initiative—discover critical security flaws in PHP, an open-source programming language used to run an estimated 70% of websites.

Over the past two months, we led a coalition of maintainers, researchers, and security providers to prepare fixes and protections ahead of disclosure. This duration was necessary because the fix was quite intricate and required a major change to the PHP engine. Every site using PHP can now safely upgrade their version to stay secure, in addition to applying mitigations from various security vendors.

Due to the severity of these flaws and PHP’s widespread use, we consider this bug to be one of the most impactful vulnerabilities in recent memory. It also marks a new phase, where AI can find security bugs with internet-scale impact.

This is an example of the Defender’s Window in action: to our knowledge, frontier AI was able to find this vulnerability ahead of attackers, giving defenders time to prepare.
openai.com/index/coordina…
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