CVE-2024-21613

Junos OS and Junos OS Evolved: A link flap causes patroot memory leak which leads to rpd crash

State: Published
Severity: 6.5 Medium
Published: Jan 12, 2024
Updated: Jun 17, 2025
Reserved: Dec 27, 2023

Description

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.

user@host> show task memory detail | match patroot This issue affects:

Juniper Networks 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.

Juniper Networks 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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	juniper

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
Junos OSJuniper Networks	before 21.2R3-S3Affected 21.3 to before 21.3R3-S5Affected 21.4 to before 21.4R3-S3Affected 22.1 to before 22.1R3Affected 22.2 to before 22.2R3Affected
Junos OS EvolvedJuniper Networks	before 21.3R3-S5-EVOAffected 21.4 to before 21.4R3-EVOAffected 22.1 to before 22.1R3-EVOAffected 22.2 to before 22.2R3-EVOAffected

References

https://supportportal.juniper.net/JSA75754vendor-advisory
https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Ntechnical-description

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.