Improper check or handling of exceptional conditions in Junos OS - CVE-2024-21593
Published: April 11, 2024
Vulnerability identifier: #VU88452
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-21593
CWE-ID: CWE-703
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper check or handling of exceptional conditions error in the Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause a Denial of Service (DoS).
If an attacker sends a specific MPLS packet, which upon processing, causes an internal loop, that leads to a PFE crash and restart.
Continued receipt of these packets leads to a sustained Denial of Service (DoS) condition.
Affected software
Junos OS
How to mitigate CVE-2024-21593
Install updates from vendor's website.
Junos OS - addressed in versions 21.4R3-S5, 22.2R3-S2, 22.2R3-S3, 22.3R2-S2, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1-S1, 23.2R2, 23.4R1