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CVE-2024-6409 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2024/07/08/2
http://www.openwall.com/lists/oss-security/2024/07/09/2
http://www.openwall.com/lists/oss-security/2024/07/09/5
http://www.openwall.com/lists/oss-security/2024/07/10/1
http://www.openwall.com/lists/oss-security/2024/07/10/2
https://access.redhat.com/errata/RHSA-2024:4457
https://access.redhat.com/errata/RHSA-2024:4457
https://access.redhat.com/errata/RHSA-2024:4613
https://access.redhat.com/errata/RHSA-2024:4613
https://access.redhat.com/errata/RHSA-2024:4716
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://access.redhat.com/security/cve/CVE-2024-6409
https://almalinux.org/blog/2024-07-09-cve-2024-6409/
https://bugzilla.redhat.com/show_bug.cgi?id=2295085
https://bugzilla.redhat.com/show_bug.cgi?id=2295085
https://bugzilla.suse.com/show_bug.cgi?id=1227217
https://explore.alas.aws.amazon.com/CVE-2024-6409.html
https://github.com/openela-main/openssh/commit/c00da7741d42029e49047dd89e266d91dcfbffa0
https://security-tracker.debian.org/tracker/CVE-2024-6409
https://security.netapp.com/advisory/ntap-20240712-0003/
https://sig-security.rocky.page/issues/CVE-2024-6409/
https://ubuntu.com/security/CVE-2024-6409
https://www.suse.com/security/cve/CVE-2024-6409.html

Weakness Enumeration

CWE-ID CWE Name Source
CWE-364 Signal Handler Race Condition Red Hat, Inc.  

Change History

19 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-6409
NVD Published Date:
07/08/2024
NVD Last Modified:
11/21/2024
Source:
Red Hat, Inc.