CVE-2024-6409
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 7
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
- EPSS probability
- 27.93%
- CWE
- CWE-364
- Published
- 2024-07-08
- Last modified
- 2026-08-21
Affected products
- Red Hat Red Hat Enterprise Linux 9
- Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
- Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
- Red Hat Red Hat OpenShift Container Platform 4.13
- Red Hat Red Hat OpenShift Container Platform 4.14
- Red Hat Red Hat OpenShift Container Platform 4.15
- Red Hat Red Hat OpenShift Container Platform 4.16
Weakness type
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