CVE-2024-6409
CVSS V2 None
CVSS V3 None
Description
A signal handler race condition vulnerability was found in OpenSSH's server (sshd), where a client does not authenticate within LoginGraceTime seconds (120 by default, 600 in old OpenSSH versions), then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). This issue leaves it vulnerable to a signal handler race condition on the cleanup_exit() function, which introduces the same vulnerability as CVE-2024-6387 in the unprivileged child of the SSHD server.
Overview
- CVE ID
- CVE-2024-6409
- Assigner
- redhat
- Vulnerability Status
- PUBLISHED
- Published Version
- 2024-07-08T17:57:10.517Z
- Last Modified Date
- 2024-07-08T17:57:10.517Z
Weakness Enumerations
References
| Reference URL | Reference Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2024-6409 | vdb-entry x_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2295085 | issue-tracking x_refsource_REDHAT |
| http://www.openwall.com/lists/oss-security/2024/07/08/2 | |
| https://explore.alas.aws.amazon.com/CVE-2024-6409.html | |
| https://sig-security.rocky.page/issues/CVE-2024-6409/ | |
| https://ubuntu.com/security/CVE-2024-6409 | |
| https://security-tracker.debian.org/tracker/CVE-2024-6409 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2024-6409 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-6409 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2024-07-09 13:09:10 | Added to TrackCVE |