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OpenSSH Server regreSSHion Remote Code Execution Vulnerability

[ 0Day-ID-39674 ]
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OpenSSH Server regreSSHion Remote Code Execution Vulnerability [ Highlight ]
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Platform
Verified
Price
free
Risk
[
Security Risk Critical
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Rel. releases
Description
Qualys has discovered a a signal handler race condition vulnerability in OpenSSH's server, sshd. If a client does not authenticate within LoginGraceTime seconds (120 by default, 600 in old OpenSSH versions), then sshd's SIGALRM handler is called asynchronously, but this signal handler calls various functions that are not async-signal-safe - for example, syslog(). This race condition affects sshd in its default configuration.
CVE
CVE-2024-6387
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0
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Open Exploit
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