A Missing Release of Memory after Effective Lifetime vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause an rpd crash, leading to Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, when traffic engineering is enabled for OSPF or ISIS, and a link flaps, a patroot memory leak is observed. This memory leak, over time, will lead to an rpd crash and restart.
 

The memory usage can be monitored using the below command.

This issue affects:

Junos OS

• All versions earlier than 21.2R3-S3;
• 21.3 versions earlier than 21.3R3-S5;
• 21.4 versions earlier than 21.4R3-S3;
• 22.1 versions earlier than 22.1R3;
• 22.2 versions earlier than 22.2R3.

Junos OS Evolved 

• All versions earlier than 21.3R3-S5-EVO;
• 21.4 versions earlier than 21.4R3-EVO;
• 22.1 versions earlier than 22.1R3-EVO;
• 22.2 versions earlier than 22.2R3-EVO.

For this issue to occur, OSPF or ISIS with traffic engineering needs to be enabled.

[ protocols ospf traffic-engineering ]

[ protocols isis traffic-engineering ]

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was seen during production usage.

This issue has been assigned CVE-2024-21613.

The following software releases have been updated to resolve this specific issue:

Junos OS: 21.2R3-S3, 21.3R3-S5, 21.4R3-S3, 22.1R3, 22.2R3, 22.3R1 and all subsequent releases.

Junos OS Evolved: 21.3R3-S5-EVO, 21.4R3-EVO, 22.1R3-EVO, 22.2R3-EVO, 22.3R1-EVO, and all subsequent releases.

This issue is being tracked as PR 1678431 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).

2024-01-10: Initial Publication

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Security Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• CVE-2024-21612 at cve.mitre.org