SB2024071237 - Denial of service in Junos OS and Junos OS Evolved ppmd
Published: July 12, 2024
Security Bulletin ID
SB2024071237
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Missing release of memory after effective lifetime (CVE-ID: CVE-2024-39536)
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.
Remediation
Install update from vendor's website.