CVE-2024-21611 Information

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a Denial of Service (DoS).

In a Juniper Flow Monitoring (jflow) scenario route churn that causes BGP next hops to be updated will cause a slow memory leak and eventually a crash and restart of rpd.

Thread level memory utilization for the areas where the leak occurs can be checked using the below command:

user@host> show task memory detail | match so_in so_in6 28 32 344450 11022400 344760 11032320 so_in 8 16 1841629 29466064 1841734 29467744 This issue affects:

Junos OS

21.4 versions earlier than 21.4R3;
22.1 versions earlier than 22.1R3;
22.2 versions earlier than 22.2R3.

Junos OS Evolved

21.4-EVO versions earlier than 21.4R3-EVO;
22.1-EVO versions earlier than 22.1R3-EVO;
22.2-EVO versions earlier than 22.2R3-EVO.

This issue does not affect:

Juniper Networks Junos OS versions earlier than 21.4R1.

Juniper Networks Junos OS Evolved versions earlier than 21.4R1.

Reference

https://supportportal.juniper.net/JSA75752 https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L