CVE-2024-30384 Junos OS: EX4300 Series: If a specific CLI command is issued PFE crashes will occur

Medium 6.8 Published 12 Apr 2024 Updated 2 Aug 2024

A locally authenticated attacker can crash the Packet Forwarding Engine on Juniper EX4300 switches by issuing a specific CLI command, 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-2024-30384?

CVE-2024-30384 is a medium-severity denial of service vulnerability in Juniper Junos, published on 12 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on EX4300 Series allows a locally authenticated attacker with low privileges to cause a Denial-of-Service (Dos).

If a specific CLI command is issued, a PFE crash will occur. This will cause traffic forwarding to be interrupted until the system self-recovers.

This issue affects Junos OS:

All versions before 20.4R3-S10,

21.2 versions before 21.2R3-S7,

21.4 versions before 21.4R3-S6.

Weakness: CWE-754

Which versions are affected by CVE-2024-30384?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2024-30384?

No fix has been published for CVE-2024-30384 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-30384 being exploited?

There is no known exploitation of CVE-2024-30384 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-76fc-hwwm-wmhg.