Libssh: libssh: denial of service via zero-length input in ssh_get_hexa() (Red Hat Red Hat Enterprise Linux 10)

CVE-2026-0966
MEDIUM 6.5

En bref

Source
NVD
EPSS
EPSS 0.60 % · centile 49 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
redhat
Statut NVD
Modified

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.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.0MEDIUM 6.5CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:Hredhat
CVSS 3.1HIGH 8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:HNVD · nvd@nist.gov (Primary)
CVSS 3.0MEDIUM 6.5CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HNVD · secalert@redhat.com (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Red Hat · Red Hat Enterprise Linux 10unaffected 0:0.12.0-2.el10 < *
Red Hat · Red Hat Enterprise Linux 9unaffected 0:0.10.4-18.el9 < *
Red Hat · Red Hat Enterprise Linux 9unaffected 0:0.10.4-18.el9 < *
Red Hat · Red Hat Hardened Imagesunaffected 0.12.0-1.1.hum1 < *
Red Hat · Red Hat Enterprise Linux 6
Red Hat · Red Hat Enterprise Linux 7
Red Hat · Red Hat Enterprise Linux 8
Red Hat · Red Hat Hardened Images
Red Hat · Red Hat OpenShift Container Platform 4
Red Hat · Red Hat OpenShift Container Platform 4

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD