CVE-2022-22207 Use after free in Junos OS

High 7.5 Published 20 Jul 2022 Updated 16 Sep 2024

An unauthenticated attacker can cause a kernel crash and denial of service on Juniper MX Series devices by intensively polling AF interface statistics.

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-2022-22207?

CVE-2022-22207 is a high-severity use after free vulnerability in Juniper Junos, published on 20 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A Use After Free vulnerability in the Advanced Forwarding Toolkit (AFT) manager process (aftmand) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause a kernel crash due to intensive polling of Abstracted Fabric (AF) interface statistics and thereby a Denial of Service (DoS). Continued gathering of AF interface statistics will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on MX Series: 20.1 versions later than 20.1R1; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2; 21.2 versions prior to 21.2R2.

Weakness: CWE-416

Which versions are affected by CVE-2022-22207?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2022-22207?

No fix has been published for CVE-2022-22207 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2022-22207 being exploited?

There is no known exploitation of CVE-2022-22207 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-9ggh-wwvp-m5qw.