Main Vulnerability Database Vulnerabilities #VU94346

Improper validation of syntactic correctness of input in Junos OS Evolved and Junos OS - CVE-2024-39542

Published: July 15, 2024

Vulnerability identifier: #VU94346

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-2024-39542

CWE-ID:

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 improper validation of syntactic correctness of input error in the Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause a Denial-of-Service (DoS).

Affected software

Junos OS Evolved
Junos OS

How to mitigate CVE-2024-39542

Install updates from vendor's website.

Junos OS Evolved - addressed in versions 21.2R3-S8-EVO, 21.4R2-EVO, 22.2R1-EVO
Junos OS - addressed in versions 21.2R3-S4, 21.4R2, 22.2R2-S1, 22.2R3, 22.3R1

External References

https://supportportal.juniper.net/s/article/2024-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-A-malformed-CFM-packet-or-specific-transit-traffic-leads-to-FPC-crash-CVE-2024-39542

Related Security Bulletins