Improper check for unusual or exceptional conditions in Junos OS Evolved - CVE-2024-39519
Published: July 16, 2024
Vulnerability identifier: #VU94355
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-2024-39519
CWE-ID: CWE-754
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 for unusual or exceptional conditions error in the Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause a Denial-of-Service (DoS).
On all ACX 7000 Series platforms running Junos OS Evolved, and configured with IRBs, if a Customer Edge device (CE) device is dual homed to two Provider Edge devices (PE) a traffic loop will occur when the CE sends multicast packets.
This issue can be triggered by IPv4 and IPv6 traffic.
Affected software
Junos OS Evolved
How to mitigate CVE-2024-39519
Install updates from vendor's website.
Junos OS Evolved - addressed in versions 22.4R2-EVO, 23.2R1-EVO