OpenSSH 9.8p1 Race Condition: A Bug that Runs Faster than Usain Bolt!
OpenSSH server (sshd) 9.8p1 on Linux is racing against time and losing. Exploiting a signal handler race condition, this vulnerability allows remote code execution as root. It’s like a marathon where the server trips over its own feet, giving attackers the gold medal. Watch your step, OpenSSH!
Hot Take:
OpenSSH just got itself tangled in a race it didn’t sign up for. It seems like the latest version forgot to stretch before sprinting, and now it’s pulling a hammy with a race condition exploit that lets attackers sprint straight to root access. Time to lace up those security patches, folks!
Key Points:
- OpenSSH 9.8p1 has a race condition vulnerability on glibc-based systems.
- The issue involves the SIGALRM handler calling async-signal-unsafe functions.
- Attackers can potentially achieve remote code execution as root.
- The exploit requires fine-tuning of timing parameters and heap layout.
- Successful exploitation may need up to 20,000 attempts on average.
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