kernel

CVE-2021-20322
HIGH 7.4

En bref

Source
NVD
EPSS
EPSS 6.90 % · centile 94 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
redhat
Statut NVD
Analyzed

Description

A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.

Faiblesses (CWE)

  • CWE-330 — Utilisation de valeurs insuffisamment aléatoires

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NNVD · nvd@nist.gov (Primary)
CVSS 2.0MEDIUM 5.8AV:N/AC:M/Au:N/C:P/I:P/A:NNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
kernelaffected 4.15 < 4.19.215 ; affected 4.20 < 5.4.146 ; affected 5.5 < 5.10.65 ; affected 5.11 < 5.13.17 ; affected 5.14 < 5.14.4

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