CVE-2024-21594 Information

Description

A Heap-based Buffer Overflow vulnerability in the Network Services Daemon (NSD) of Juniper Networks Junos OS allows authenticated low privileged local attacker to cause a Denial of Service (DoS).

On an SRX 5000 Series device when executing a specific command repeatedly memory is corrupted which leads to a Flow Processing Daemon (flowd) crash.

The NSD process has to be restarted to restore services.

If this issue occurs it can be checked with the following command:

user@host> request security policies check The following log message can also be observed:

Error: policies are out of sync for PFE node.fpc.pic. This issue affects:

Juniper Networks Junos OS on SRX 5000 Series

All versions earlier than 20.4R3-S6;
21.1 versions earlier than 21.1R3-S5;
21.2 versions earlier than 21.2R3-S4;
21.3 versions earlier than 21.3R3-S3;
21.4 versions earlier than 21.4R3-S3;
22.1 versions earlier than 22.1R3-S1;
22.2 versions earlier than 22.2R3;
22.3 versions earlier than 22.3R2.

Reference

https://supportportal.juniper.net/JSA75733 https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N