CVE-2023-44193 Information

Description

An Improper Release of Memory Before Removing Last Reference vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a local low privileged attacker to cause an FPC crash leading to Denial of Service (DoS).

On all Junos MX Series with MPC1 - MPC9 LC480 LC2101 MX10003 and MX80 when Connectivity-Fault-Management (CFM) is enabled in a VPLS scenario and a specific LDP related command is run an FPC will crash and reboot. Continued execution of this specific LDP command can lead to sustained Denial of Service condition.

This issue affects:

Juniper Networks Junos OS on MX Series:

All versions prior to 20.4R3-S7;
21.1 versions prior to 21.1R3-S5;
21.2 versions prior to 21.2R3-S4;
21.3 versions prior to 21.3R3-S4;
21.4 versions prior to 21.4R3-S3;
22.1 versions prior to 22.1R3-S1;
22.2 versions prior to 22.2R2-S1 22.2R3;
22.3 versions prior to 22.3R1-S2 22.3R2.

Reference

https://supportportal.juniper.net/JSA73157