CVE-2023-44193: Junos OS: MX Series: An FPC crash is observed when CFM is enabled in a VPLS scenario and a specific LDP related command is run
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 Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2023-44193?
CVE-2023-44193 has been categorized as a Denial of Service (DoS) vulnerability.
How do I fix CVE-2023-44193?
To mitigate CVE-2023-44193, upgrade Junos OS to a version greater than 20.4.
Who is affected by CVE-2023-44193?
CVE-2023-44193 affects Juniper Networks Junos OS, specifically on all MX Series platforms utilizing MPC1 to MPC9.
What is the impact of CVE-2023-44193?
An attacker exploiting CVE-2023-44193 can cause an FPC crash, resulting in network downtime.
Is there a workaround for CVE-2023-44193?
Currently, there are no documented workarounds for CVE-2023-44193 other than upgrading the software.