CVE-2024-47496 Junos OS: MX Series: The PFE will crash on running specific command

Medium 6.8 Published 11 Oct 2024 Updated 11 Oct 2024

A local low-privileged attacker can crash the Packet Forwarding Engine on Juniper MX Series devices, causing a denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2024-47496?

CVE-2024-47496 is a medium-severity vulnerability in Juniper Junos, published on 11 Oct 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS allows a local, low-privileged attacker to cause a Denial-of-Service (DoS).

When a specific command is executed, the pfe crashes. This will cause traffic forwarding to be interrupted until the system self-recovers. Repeated execution will create a sustained DoS condition.

This issue only affects MX Series devices with Line cards MPC1-MPC9. This issue affects: Junos OS on MX Series:

* All versions before 21.4R3-S9, * from 22.2 before 22.2R3-S5, * from 22.3 before 22.3R3-S4, * from 22.4 before 22.4R3-S2, * from 23.2 before 23.2R2-S1, * from 23.4 before 23.4R2.

Weakness: CWE-476

Which versions are affected by CVE-2024-47496?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2024-47496?

No fix has been published for CVE-2024-47496 yet. Limit exposure of the affected software until one is available.

Is CVE-2024-47496 being exploited?

There is no known exploitation of CVE-2024-47496 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-v4c2-2gfg-qh3v.