Description (CNA)
A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Enterprise Linux 10 | unaffected 0:0.12.0-2.el10 before * |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected 0:0.10.4-18.el9 before * |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected 0:0.10.4-18.el9 before * |
| Red Hat / Red Hat Enterprise Linux 6 | unaffected |
| Red Hat / Red Hat Enterprise Linux 7 | unaffected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat Hardened Images | unaffected |
| Red Hat / Red Hat OpenShift Container Platform 4 | affected |
| Red Hat / Red Hat OpenShift Container Platform 4 | affected |
CWE
CWE-1333
References
- https://access.redhat.com/errata/RHSA-2026:18160
- https://access.redhat.com/errata/RHSA-2026:18683
- https://access.redhat.com/security/cve/CVE-2026-0967
- https://bugzilla.redhat.com/show_bug.cgi?id=2436981
- https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
ADP enrichment
No English description supplied.
No references supplied.