Missing release of memory after effective lifetime in Junos OS Evolved and Junos OS - CVE-2024-39536
Published: July 12, 2024
Vulnerability identifier: #VU94197
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-39536
CWE-ID: CWE-401
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 missing release of memory after effective lifetime error in the Periodic Packet Management Daemon (ppmd). A remote non-authenticated attacker can cause a Denial-of-Service (DoS).
When a BFD session configured with authentication flaps, ppmd memory can leak.
Whether the leak happens depends on a race condition which is outside the attackers control.
Affected software
Junos OS Evolved
Junos OS
Junos OS
How to mitigate CVE-2024-39536
Install updates from vendor's website.
Junos OS Evolved - addressed in versions 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.3R3-EVO, 22.4R3-EVO, 23.2R1-EVO
Junos OS - addressed in versions 21.2R3-S8, 21.4R3-S7, 22.1R3-S4, 22.2R3-S4, 22.3R3, 22.4R2-S2, 22.4R3, 23.2R1
Junos OS - addressed in versions 21.2R3-S8, 21.4R3-S7, 22.1R3-S4, 22.2R3-S4, 22.3R3, 22.4R2-S2, 22.4R3, 23.2R1