CVE - CVE-2024-6387
cve.mitre.org
The mission of the CVE® Program is to identify, define, and catalog publicly disclosed cybersecurity vulnerabilities.

A signal handler race condition was found in OpenSSH’s server (sshd), where a client does not authenticate within LoginGraceTime seconds (120 by default, 600 in old OpenSSH versions), then sshd’s SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog().

  • catloaf@lemm.eeEnglish
    3·
    3 days ago

    I’m not familiar with this exploit vector. How does this bypass authentication? What’s the race you’re trying to win when the prompt times out?