CVE-2022-27007 Use after free in n/a

Critical 9.8 Published 14 Apr 2022 Updated 3 Aug 2024

A use-after-free vulnerability in the nginx njs library allows attackers to potentially execute arbitrary code or cause a denial of service.

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-2022-27007?

CVE-2022-27007 is a critical use after free vulnerability in n/a, published on 14 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

nginx njs 0.7.2 is affected suffers from Use-after-free in njs_function_frame_alloc() when it try to invoke from a restored frame saved with njs_function_frame_save().

Weakness: CWE-416

Which versions are affected by CVE-2022-27007?

It affects 1 product.

Products include F5 Njs.

How do I fix CVE-2022-27007?

No fix has been published for CVE-2022-27007 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-2022-27007 being exploited?

There is no known exploitation of CVE-2022-27007 in the wild and no public exploit code.

Sources

Also known as GHSA-5676-7fp6-4h94.