CVEvulnerability

CVE-2024-6409

7.0 HIGH Published 2024-07-08 Modified 2026-10-15 Official page ↗
Status
Deferred
Published
2024-07-08
Last modified
2026-10-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Weaknesses
CWE-364

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.

Related

Weakness · CWE (1)

  • CWE-364 Signal Handler Race Condition weakness

References