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Vulnerability · Published Apr 12, 2024 · Assigned by juniper

CVE-2024-21590Junos OS Evolved: Packets which are not destined to the device can reach the RE

Medium 5.3

In plain English

A medium-severity improper input validation in Junos OS Evolved from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.4%top 69.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS).  When specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: * All versions before 21.2R3-S8-EVO; * from 21.4-EVO before 21.4R3-S6-EVO; * from 22.2-EVO before 22.2R3-S4-EVO; * from 22.3-EVO before 22.3R3-S3-EVO; * from 22.4-EVO before 22.4R3-EVO; * from 23.2-EVO before 23.2R2-EVO. * from 23.4-EVO before 23.4R1-S1-EVO.

Affected products (as reported)

VendorProductVersions
Juniper Networks Junos OS Evolved 0 – before 21.2R3-S8-EVO21.4-EVO – before 21.4R3-S6-EVO22.2-EVO – before 22.2R3-S4-EVO22.3-EVO – before 22.3R3-S3-EVO22.4-EVO – before 22.4R3-EVO23.2-EVO – before 23.2R2-EVO23.4-EVO – before 23.4R1-S1-EVO

Weakness: CWE-20 · Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References