CVE-2023-28980

/// Technical description

A Use After Free vulnerability in the routing protocol daemon of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated attacker with low privileges to cause Denial of Service (DoS). In a rib sharding scenario the rpd process will crash shortly after specific CLI command is issued. This issue is more likely to occur in a scenario with high route scale (>1M routes).

This issue affects:

Juniper Networks Junos OS

* 20.2 version 20.2R3-S5 and later versions prior to 20.2R3-S6;

* 20.3 version 20.3R3-S2 and later versions prior to 20.3R3-S5;

* 20.4 version 20.4R3-S1 and later versions prior to 20.4R3-S4

* 21.1 version 21.1R3 and later versions prior to 21.1R3-S3;

* 21.2 version 21.2R1-S2, 21.2R2-S1 and later versions prior to 21.2R3-S2;

* 21.3 version 21.3R2 and later versions prior to 21.3R3;

* 21.4 versions prior to 21.4R2-S1, 21.4R3;

* 22.1 versions prior to 22.1R2.

Juniper Networks Junos OS Evolved

* 20.4-EVO version 20.4R3-S1-E

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References