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cve-2024-6387-poc

a signal handler race condition in OpenSSH's server (sshd)

  • 7etsuo

Description

An exploit for CVE-2024-6387, targeting a signal handler race condition in OpenSSH's server (sshd) on glibc-based Linux systems. The vulnerability allows for remote code execution as root due to async-signal-unsafe functions being called in the SIGALRM handler.

Exploit Details

Vulnerability Summary

The exploit targets the SIGALRM handler race condition in OpenSSH's sshd:

  • Affected Versions: OpenSSH 8.5p1 to 9.8p1.
  • Exploit: Remote code execution as root due to the vulnerable SIGALRM handler calling async-signal-unsafe functions.