FG-IR-24-258: OpenSSH regreSSHion Attack (CVE-2024-6387)
CVE-2024-6387 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(). This could lead to remote code execution with root privileges.
Affected Software
Event History
Frequently Asked Questions
What is the severity of FG-IR-24-258?
The severity of FG-IR-24-258 is considered high due to the potential for unauthorized access if exploited.
How do I fix FG-IR-24-258?
To fix FG-IR-24-258, upgrade your affected Fortinet products to the recommended version specified in the advisory.
Which Fortinet products are affected by FG-IR-24-258?
FG-IR-24-258 affects multiple Fortinet products including FortiADC, FortiAnalyzer, FortiMail, and FortiWeb among others.
What versions are vulnerable to FG-IR-24-258?
Versions prior to the remediation versions listed in FG-IR-24-258 for each affected Fortinet product are vulnerable.
Is a patch available for FG-IR-24-258?
Yes, patches are available for FG-IR-24-258 as per the recommended upgrades in the advisory.