CVE-2023-44193

published 2023-10-13

CVE-2023-44193: An Improper Release of Memory Before Removing Last Reference vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a local, low…

medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

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.

Affected

19 ranges

Vendor	Product	Version range	Fixed in
juniper	junos	< 20.4	20.4
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos_os	—	—
juniper	mx_series	—	—
juniper_networks	junos_os	< 20.4R3-S7	20.4R3-S7
juniper_networks	junos_os	>= 21.1 < 21.1R3-S5	21.1R3-S5
juniper_networks	junos_os	>= 21.2 < 21.2R3-S4	21.2R3-S4
juniper_networks	junos_os	>= 21.3 < 21.3R3-S4	21.3R3-S4
juniper_networks	junos_os	>= 21.4 < 21.4R3-S3	21.4R3-S3
juniper_networks	junos_os	>= 22.1 < 22.1R3-S1	22.1R3-S1
juniper_networks	junos_os	>= 22.2 < 22.2R2-S1, 22.2R3	22.2R2-S1, 22.2R3
juniper_networks	junos_os	>= 22.3 < 22.3R1-S2, 22.3R2	22.3R1-S2, 22.3R2

CWE-401