CVE-2024-6409

7.0High

Published 08 Jul 2024 · NVD status: Deferred

7.0High

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None
Impact: High impact on availability
Weakness: CWE-364

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CVSS v3.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

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NVD description

A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). If a remote attacker does not authenticate within a set time period, then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). As a consequence of a successful attack, in the worst case scenario, an attacker may be able to perform a remote code execution (RCE) as an unprivileged user running the sshd server.

References

Source: nvd.nist.gov/vuln/detail/CVE-2024-6409