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CVE-2024-21598

Vulnérabilité élevée dans Junos OS (Juniper Networks)

CVSS 8.7 · Élevée
EPSS 0.6%
Juniper Networks•Junos OS•Versions : <21.4R3-S5-EVO, <23.2R1-S2-EVO, 23.2R2-EVO, 23.2, 22.4-EVO, 21.2, 21.4, 22.2, 22.1, 20.4-EVO, <22.3R3-S1, 20.4, <21.2R3-S7, <22.4R3-EVO, 21.4-EVO, <21.3R3-S5, 22.2-EVO, 22.4, <20.4R3-S9-EVO, <22.2R3-S3-EVO, 21.3-EVO, <22.2R3-S3, <23.2R1-S2, 23.2R2, <21.4R3-S5, 21.2-EVO, <21.3R3-S5-EVO, 22.1-EVO, 22.3-EVO, <22.3R3-S1-EVO, <22.1R3-S4-EVO, 23.2-EVO, <22.1R3-S4, <22.4R3, <20.4R3-S9, <21.2R3-S7-EVO, 21.3, 22.3

Description

An Improper Validation of Syntactic Correctness of Input vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). If a BGP update is received over an established BGP session which contains a tunnel encapsulation attribute with a specifically malformed TLV, rpd will crash and restart. This issue affects Juniper Networks Junos OS: * 20.4 versions 20.4R1 and later versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S7; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R3-S4; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S1; * 22.4 versions earlier than 22.4R3; * 23.2 versions earlier than 23.2R1-S2, 23.2R2; Junos OS Evolved: * 20.4-EVO versions 20.4R1-EVO and later versions earlier than 20.4R3-S9-EVO; * 21.2-EVO versions earlier than 21.2R3-S7-EVO; * 21.3-EVO versions earlier than 21.3R3-S5-EVO; * 21.4-EVO versions earlier than 21.4R3-S5-EVO; * 22.1-EVO versions earlier than 22.1R3-S4-EVO; * 22.2-EVO versions earlier than 22.2R3-S3-EVO; * 22.3-EVO versions earlier than 22.3R3-S1-EVO; * 22.4-EVO versions earlier than 22.4R3-EVO; * 23.2-EVO versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO; This issue does not affect Juniper Networks * Junos OS versions earlier than 20.4R1; * Junos OS Evolved versions earlier than 20.4R1-EVO. This is a related but separate issue than the one described in JSA79095.

Gravité et risque d'exploitation

CVE-2024-21598 obtient un score CVSS de 8.7/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.57 %, ce qui la place devant 46.2 % des CVE référencées.

Que faire ?

  • Vérifiez si Junos OS (versions <21.4R3-S5-EVO, <23.2R1-S2-EVO, 23.2R2-EVO, 23.2, 22.4-EVO, 21.2, 21.4, 22.2, 22.1, 20.4-EVO, <22.3R3-S1, 20.4, <21.2R3-S7, <22.4R3-EVO, 21.4-EVO, <21.3R3-S5, 22.2-EVO, 22.4, <20.4R3-S9-EVO, <22.2R3-S3-EVO, 21.3-EVO, <22.2R3-S3, <23.2R1-S2, 23.2R2, <21.4R3-S5, 21.2-EVO, <21.3R3-S5-EVO, 22.1-EVO, 22.3-EVO, <22.3R3-S1-EVO, <22.1R3-S4-EVO, 23.2-EVO, <22.1R3-S4, <22.4R3, <20.4R3-S9, <21.2R3-S7-EVO, 21.3, 22.3) 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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