@xIsraelExposedx: Security jokes, new tools and a Brotli vulnerability

I texted my children that we got the puppy they’ve been begging me for and sent them a link with pictures. 🐶When they clicked on the link, it took them to a webpage that said YOU’RE GROUNDED. They’ll be spending the weekend retaking our family’s cybersecurity training course.

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: https://t.co/Y1Y72aHxrW

I highly recommend cloudflare's security audit skill: https://t.co/Mu6Dm0fzk8 Run it on all your software. Run it with the free models. Use it even if you used a model to audit something - it will find much more things. Works in all agent harnesses and is model independent.