CVE-2023-29132 Use after free in n/a

Medium 5.3 Published 14 Apr 2023 Updated 6 Feb 2025

A use-after-free in Irssi allows attackers to execute arbitrary code or cause denial of service via concurrent line printing.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2023-29132?

CVE-2023-29132 is a medium-severity use after free vulnerability in n/a, published on 14 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Irssi 1.3.x and 1.4.x before 1.4.4 has a use-after-free because of use of a stale special collector reference. This occurs when printing of a non-formatted line is concurrent with printing of a formatted line.

Weakness: CWE-416

Which versions are affected by CVE-2023-29132?

It affects 1 product.

Linux distribution packages (1)

irssi openSUSE:Tumbleweed All versions 1.4.4-2.1

Products include Irssi Irssi.

How do I fix CVE-2023-29132?

Upgrade to a fixed version.

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-2023-29132 being exploited?

There is no known exploitation of CVE-2023-29132 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2023-29132, GHSA-rx4q-gwv4-r27p, MGASA-2024-0063, openSUSE-SU-2024:12848-1.