Skip to content
CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-0966

Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
redhat

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

  • 0:0.12.0-2.el10 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:0.10.4-18.el9 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:0.10.4-18.el9 to < *unaffected

Red Hat Red Hat Hardened Images

Default version status: affected

  • 0.12.0-1.1.hum1 to < *unaffected

Red Hat Red Hat Enterprise Linux 6

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 7

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

Red Hat Red Hat Hardened Images

Default version status: unaffected

Red Hat Red Hat OpenShift Container Platform 4

Default version status: affected

Red Hat Red Hat OpenShift Container Platform 4

Default version status: affected

References