CVE-2025-8277

Libssh: memory exhaustion via repeated key exchange in libssh

LOW 3.1

En bref

Source
NVD
EPSS
EPSS 0.43 % · centile 37 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
redhat
Statut NVD
Deferred

Description

A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.

Faiblesses (CWE)

  • CWE-401 — Mémoire non libérée après sa durée de vie utile

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1LOW 3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:Lredhat
CVSS 3.1LOW 3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:LNVD · secalert@redhat.com (Secondary)

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
libsshaffected 0.6.0 < 0.11.3
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 Enterprise Linux 10
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 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