CVE-2024-6387 OpenSSH Server Authentication Bypass
CVE-2024-6387 OpenSSH Server Authentication Bypass
cve.mitre.org
CVE - CVE-2024-6387
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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().