Null pointer dereference in Junos OS Evolved - CVE-2024-21602
Published: January 10, 2024
Vulnerability identifier: #VU85281
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-21602
CWE-ID: CWE-476
Exploitation vector: Remote access
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 null pointer dereference error. A remote non-authenticated attacker can cause a Denial of Service (DoS).
If a specific IPv4 UDP packet is received and sent to the Routing Engine (RE) packetio crashes and restarts which causes a momentary traffic interruption.
Continued receipt of such packets will lead to a sustained DoS.
Affected software
Junos OS Evolved
How to mitigate CVE-2024-21602
Install updates from vendor's website.
Junos OS Evolved - addressed in versions 21.4R3-S6-EVO, 22.1R3-S5-EVO, 22.2R2-S1-EVO, 22.2R3-EVO, 22.3R2-EVO, 22.4R1-EVO