CVE-2026-34956

Openvswitch: open vswitch: denial of service via malformed ftp epasv command

MEDIUM 5.9

En bref

Source
NVD
EPSS
EPSS 0.40 % · centile 35 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
redhat
Statut NVD
Awaiting Analysis

Description

A flaw was found in Open vSwitch. When Open vSwitch is configured with a conntrack flow using FTP helpers over the userspace datapath, a remote attacker can send a specially crafted FTP stream with an EPASV command exceeding 255 characters. This heap access error can lead to a crash, resulting in a Denial of Service (DoS) for the affected system.

Faiblesses (CWE)

  • CWE-120 — Copie de tampon sans vérification de taille (débordement classique)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat
CVSS 3.1MEDIUM 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · secalert@redhat.com (Secondary)

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Red Hat · Fast Datapath for RHEL 7
Red Hat · Fast Datapath for RHEL 7
Red Hat · Fast Datapath for RHEL 7
Red Hat · Fast Datapath for RHEL 7
Red Hat · Fast Datapath for RHEL 7
Red Hat · Fast Datapath for RHEL 7
Red Hat · Fast Datapath for RHEL 7
Red Hat · Fast Datapath for RHEL 7
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 8
Red Hat · Fast Datapath for RHEL 9
Red Hat · Fast Datapath for RHEL 9

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