Description (CNA)
A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.
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 Hardened Images | unaffected 0.12.0-1.1.hum1 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-124
References
- https://access.redhat.com/errata/RHSA-2026:18160
- https://access.redhat.com/errata/RHSA-2026:18683
- https://access.redhat.com/errata/RHSA-2026:7067
- https://access.redhat.com/security/cve/CVE-2026-0966
- https://bugzilla.redhat.com/show_bug.cgi?id=2433121
- 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.