Offsec engineer | Nim/C/Python | https://xitter.cf/t.co/nrOLU7oWlt I break things so others stay safe.
Woodstock, GA
Joined March 2007
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Jeff Barron retweeted
LLMs...Letting me do fun things I never would have wasted time on.
"I reviewed all 30 public GitHub repos for PHP2Shell (CVE-2026-109618 / CVE-2026-109619) by reading code only. The slide has the full
grouped table; the headline findings:
Nothing works against a real target. Every genuine memory-corruption chain is lab-bound: it needs exact per-build offsets, display_errors=On, a single prefork mod_php worker, and a specific image.
Independent reviewers (allureluoli, dinosn, Gi1gamesh123) and the leaked primary source itself all converge on "no public artifact achieves code execution" on the patched core bug. Every real shell
in these repos comes from an app-side LFI or deserialization sink, not the CVE.
Three are original and real, all lab-only. 9bie (the source of the Set-Cookie leak chain), Marven11 (the most sophisticated, a true in-band leak), and Karasawa2025 (whose "Fermat" troll description
hides a working ROP + display_errors=off exploit). These are the only ones with a genuine ASLR-defeating leak primitive that is their own.
Most are copies. One original (9bie) spawned five derivatives:
- twili8 is an outright uncredited rip-off: its own README still says git clone 9bie/... and the Docker files are byte-identical.
- godylockz and xuehuolll are byte-identical to each other.
- dinosn and 3em0 are credited ports that add value.
Three are mislabeled. iQingshan, KarimUD7 (≈98% the same code), and Gi1gamesh123 exploit a different bug entirely (the Calif unserialize var_hash UAF) against their own planted endpoints, filed
under the php2shell CVE numbers.
The rest is noise. The most-starred repo (ikow, 905★) delivers the least: broken or stubbed chains with the two "real" ones paywalled behind Substack. eness (558★) is a leakless forge that can't
defeat ASLR. syrex1013 ships AI-generated fake CVEs in a side directory. Whackermelon hallucinates a non-existent openai/php2shell-checker. lcfr-eth is a parody with a memecoin address, and Icex0
is an empty repo. The genuinely honest work is the crash labs (allureluoli, slabbdev, 0x4148), which prove the bug without claiming RCE.
The ASLR column, star counts, copy lineage, and the specific "tell" for each repo are all in the table. The page is private to your account; use the Share menu if you want to send it to the team"
Jeff Barron retweeted
The IPO ain’t happening folks. This is a cry for help.
OpenAI's Noam Brown says air-gapping the computers may not stop a misaligned AI, because two air-gapped machines can still talk by running a CPU hot and reading the temperature change
"But I think the major takeaway from the incident is that people underestimated the AI. And we never want to be in a situation again where we underestimate the AI. It's a weird world, because AI progress is so fast that people are consistently underestimating the AI."
"So to be in a situation where you don't underestimate it again, when it comes to safety and alignment, you have to have a very, very, very high bar."
"You could even go as far as to say, "Well, we should air gap the computers." And I'm not convinced that that would be sufficient."
"There are studies, and this is mostly academic, where you can have two computers next to each other that are air-gapped and they're still able to communicate with each other because they have temperature sensors."
"One of them is able to run their CPU really hot, and then the other one can actually detect the temperature change, and then that actually gives them a mechanism to communicate."
_________
Link and more key quotes from OpenAI's safety related conversations: firesidealpha.substack.com/p…
In the latest issue of Cred Relay, I talk about my two ASUS CVEs and how not to ship slop.
credrelay.com/p/getting-a-cv…
Jeff Barron retweeted
The day after the CEO lays off a ton of staff and says:
“Non-technical teams are now pushing code to production with AI”
@coinbase has a major outage on their trading engine, and even their status page doesn’t work.
😂
Jeff Barron retweeted
💥 Introducing "Dirty Frag"
A universal Linux LPE chaining two vulns in xfrm-ESP and RxRPC. A successor class to Dirty Pipe & Copy Fail.
No race, no panic on failure, fully deterministic. ~9 years latent.
Ubuntu / RHEL / Fedora / openSUSE / CentOS / AlmaLinux, and more.
Even if you've applied the "Copy Fail" mitigation, your Linux is still vulnerable to "Dirty Frag". Apply the Dirty Frag mitigation.
Details:
dirtyfrag.io
I've written the first article in a series on maldev with Nim.
First up, a simple shellcode loader, cross-compiled from Linux.
Next: process injection and payload encryption.
credrelay.com/p/intro-to-mal… – at Woodstock, GA
Mythos finding bugs isn't a great leap from Opus. I've got CVEs coming from three different vendors that Opus helped me find. – at Woodstock, GA
Did you know you can still use terminal escape sequences and they got a CVE as recently as 2024?
I cover that, ANSI bombs and what not to study for the OSCP in the latest issue of Cred Relay.
credrelay.com/p/cred-relay-i… – at Woodstock, GA
CVE-2026-32746 dropped this morning. Pre-auth buffer overflow in GNU telnetd, CVSS 9.8, no patch yet.
Read DREAM Security's disclosure, pointed Claude Code at it, had a working crash PoC within the hour.
github.com/jeffaf/cve-2026-3…
Jeff Barron retweeted
After reviewing research from Elastic blogs and insights shared by Outflank, we took a deeper dive into .msc files and successfully developed a weaponized MSC without relying on apds.dll.
#redteam
I fired up Claude Code and MCP Ghidra to reverse the kernel drivers on my gaming laptop. Found 9 vulnerabilities across 3 vendors. Here's the walkthrough and the prompt I used:
credrelay.com/p/cred-relay-i… – at Woodstock, GA
