CVE-2024-6409
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
08/07/2024
Last modified:
12/09/2024
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.
Impact
Base Score 3.x
7.00
Severity 3.x
HIGH
References to Advisories, Solutions, and Tools
- https://access.redhat.com/errata/RHSA-2024:4457
- https://access.redhat.com/errata/RHSA-2024:4613
- https://access.redhat.com/errata/RHSA-2024:4716
- https://access.redhat.com/errata/RHSA-2024:4910
- https://access.redhat.com/errata/RHSA-2024:4955
- https://access.redhat.com/errata/RHSA-2024:4960
- https://access.redhat.com/errata/RHSA-2024:5444
- https://access.redhat.com/security/cve/CVE-2024-6409
- https://bugzilla.redhat.com/show_bug.cgi?id=2295085