CVE-2024-30401 Junos OS: MX Series and EX9200-15C: Stack-based buffer overflow in aftman

High 8.2 Published 12 Apr 2024 Updated 2 Aug 2024

An attacker can trigger a stack-based buffer overflow in the aftman process, causing a reboot of the FPC on affected Juniper MX and EX9200 devices.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2024-30401?

CVE-2024-30401 is a high-severity memory corruption vulnerability in Juniper Junos, published on 12 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An Out-of-bounds Read vulnerability in the advanced forwarding management process aftman of Juniper Networks Junos OS on MX Series with MPC10E, MPC11, MX10K-LC9600 line cards, MX304, and EX9200-15C, may allow an attacker to exploit a stack-based buffer overflow, leading to a reboot of the FPC.

Through code review, it was determined that the interface definition code for aftman could read beyond a buffer boundary, leading to a stack-based buffer overflow. This issue affects Junos OS on MX Series and EX9200-15C:

* from 21.2 before 21.2R3-S1, * from 21.4 before 21.4R3, * from 22.1 before 22.1R2, * from 22.2 before 22.2R2;

This issue does not affect:

* versions of Junos OS prior to 20.3R1; * any version of Junos OS 20.4.

Weakness: CWE-125

Which versions are affected by CVE-2024-30401?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2024-30401?

No fix has been published for CVE-2024-30401 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2024-30401 being exploited?

There is no known exploitation of CVE-2024-30401 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-pqmg-f829-g3ww.