Sec/Madness @privy_io principal security , @_seal_org technical council prev: HoS @uniswap, D&R/IR @RobinhoodApp, IR @BitMEX, Built @Paterva Maltego with RT

New York, USA
Joined February 2008
Fun react bug, (CVE-2025-55183) if you have a server side component and it explicitly or implicitly exposes a stringified argument you can get the source code for that function. Also found DoS, but reported it to vercel instead of meta and some else reported the next day 🙃
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Apparently tweeting “I have a working PoC” creates a small obligation to explain how the thing works 😅 So here it is: both PHP bugs, the memory leaks, the ASLR bypass, worker pinning, and how I eventually got to execution andrewmohawk.com/2026/10/26/…
Its me, I have a working PoC with the infoleaks to bypass ASLR. It took a lot of prompting and re-iterating to find those, tested against PHP 8.5.11 x86_64 with with all defaults and tested over the Internet
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Lot of 4's in @4A4133 's handle.. makes you wonder ;)
Announcing 3 Critical vulns for hundreds of millions of IoT, Firewalls, OT, and Military devices including: Palo Alto Networks, Comcast, D-Link, HP, Canon, Honeywell, GE, Oracle, Siemens, Rockwell, Digi, Lockheed Martin, Boeing... The vulns are with GoAhead Web Server which is a backend library used by these devices. There's a patch available from GoAhead but that doesn't mean there's a patch available for the devices yet -- that's up to the manufacturer. - TLS traffic over DHE ciphers have a 1-byte secret, "04", meaning anyone can decrypt connections to these devices and steal login credentials and session tokens if the client negotiated with DHE ciphers like the latest TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256, which is extremely likely. - LibreSSL mTLS has been completely bypassed, meaning anyone can connect over mTLS. If you have one of these devices listening on the internet and are expecting mTLS to protect it from attackers, take it offline or patch asap. - OpenSSL Certificate Revocation Lists (CRLs) are not enforced, meaning if a user device is stolen or compromised, and you revoke that mTLS cert, nothing actually happens. There are a lot of other attacks this can be used for. These are critical because these types of devices run our world. Water systems, electricity, military, firewalls, critical infrastructure. foxio.io/blog/choose-your-ba…
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bsky.app/profile/nightshade.… It just cant be 4 again, it just cant be.
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practice{challenge_already_won}
Can't make any guarantees as to uptime or how long I can keep this up: challenge is back up on old.stealmybitcoin.com for the next few days. No prize. Treat server as if toxic / use at own risk. Confirmed that @killa 's POC replicates here. It may take a few tries.
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AndrewMohawk⁽ⁿᵘˡˡ⁾ retweeted
Congrats to @killa who solved stealmybitcoin.com hours ago but I screwed up which key went on the server (the flag was a root wallet WIF instead of the branch WIF). Check out their awesome writeup here: github.com/KillaBoi/StealMyB…
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wow, those scores are something
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AndrewMohawk⁽ⁿᵘˡˡ⁾ retweeted
If you encounter ICE, here's what every New Yorker should know.
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AndrewMohawk⁽ⁿᵘˡˡ⁾ retweeted
What a creative way to celebrate cybersecurity awareness month
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No matter how much fun, with this much still vulnerable from php2shell.censys.com/ , it seems irresponsible to release PoCs for this right now :'(
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Its me, I have a working PoC with the infoleaks to bypass ASLR. It took a lot of prompting and re-iterating to find those, tested against PHP 8.5.11 x86_64 with with all defaults and tested over the Internet
Has anyone actually seen a fully working PoC in the wild for the PHP vuln? Finding the UAFs is fast, but you still need things like info leak to get it to exec and I dont see anyone posts that include it, just tons of llms that are just reading proc/other ways to manage layout
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Tested on: PHP 8.5.11 x86_64 Apache mod_php PHP 8.5.11 AArch64 mod_php PHP 8.4.26 / 8.3.35 / 8.2.34
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also x86_64 PHP-FPM and AArch64 PHP-FPM just for @k_firsov
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AndrewMohawk⁽ⁿᵘˡˡ⁾ retweeted
it’s been an honor using the computer with you all
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😰
OVH supply chain compromise. Attackers took over a developer's GitHub account and replaced existing OVHcloud CLI release binaries with backdoored versions.
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Has anyone actually seen a fully working PoC in the wild for the PHP vuln? Finding the UAFs is fast, but you still need things like info leak to get it to exec and I dont see anyone posts that include it, just tons of llms that are just reading proc/other ways to manage layout
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thephp.foundation/blog/2026/… Really disappointing that companies put marketing ahead of safety.
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