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CVE-2016-4921

Vulnérabilité non évaluée dans Junos OS (Juniper Networks)

CVSS 0.0 · Non évaluée
EPSS 2.9%
Juniper Networks•Junos OS•Versions : 12.3X48 prior to 12.3X48-D30, 13.3 prior to 13.3R10, 13.3R4-S11, 15.1X53 prior to 15.1X53-D57, 15.1X53-D70, 14.2 prior to 14.2R3-S10, 14.2R4-S7, 14.2R6, 15.1 prior to 15.1F2-S5, 15.1F5-S2, 15.1F6, 15.1R3, 14.1 prior to 14.1R2-S8, 14.1R4-S12, 14.1R8, 11.4 prior to 11.4R13-S3, 15.1X49 prior to 15.1X49-D40, 14.1X55 prior to 14.1X55-D35, 14.1X53 prior to 14.1X53-D28, 14.1X53-D40, 12.3 prior to 12.3R3-S4

Description

By flooding a Juniper Networks router running Junos OS with specially crafted IPv6 traffic, all available resources can be consumed, leading to the inability to store next hop information for legitimate traffic. In extreme cases, the crafted IPv6 traffic may result in a total resource exhaustion and kernel panic. The issue is triggered by traffic destined to the router. Transit traffic does not trigger the vulnerability. This issue only affects devices with IPv6 enabled and configured. Devices not configured to process IPv6 traffic are unaffected by this vulnerability. This issue was found during internal product security testing. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. Affected releases are Juniper Networks Junos OS 11.4 prior to 11.4R13-S3; 12.3 prior to 12.3R3-S4; 12.3X48 prior to 12.3X48-D30; 13.3 prior to 13.3R10, 13.3R4-S11; 14.1 prior to 14.1R2-S8, 14.1R4-S12, 14.1R8; 14.1X53 prior to 14.1X53-D28, 14.1X53-D40; 14.1X55 prior to 14.1X55-D35; 14.2 prior to 14.2R3-S10, 14.2R4-S7, 14.2R6; 15.1 prior to 15.1F2-S5, 15.1F5-S2, 15.1F6, 15.1R3; 15.1X49 prior to 15.1X49-D40; 15.1X53 prior to 15.1X53-D57, 15.1X53-D70.

Gravité et risque d'exploitation

CVE-2016-4921 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 2.91 %, ce qui la place devant 86.8 % des CVE référencées.

Que faire ?

  • Vérifiez si Junos OS (versions 12.3X48 prior to 12.3X48-D30, 13.3 prior to 13.3R10, 13.3R4-S11, 15.1X53 prior to 15.1X53-D57, 15.1X53-D70, 14.2 prior to 14.2R3-S10, 14.2R4-S7, 14.2R6, 15.1 prior to 15.1F2-S5, 15.1F5-S2, 15.1F6, 15.1R3, 14.1 prior to 14.1R2-S8, 14.1R4-S12, 14.1R8, 11.4 prior to 11.4R13-S3, 15.1X49 prior to 15.1X49-D40, 14.1X55 prior to 14.1X55-D35, 14.1X53 prior to 14.1X53-D28, 14.1X53-D40, 12.3 prior to 12.3R3-S4) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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