CVE-2017-10966 Use after free in n/a

Critical 9.8 Published 7 Jul 2017 Updated 5 Aug 2024

A use-after-free vulnerability in Irssi allows attackers to execute arbitrary code or cause a denial of service via crafted nick updates.

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

What is CVE-2017-10966?

CVE-2017-10966 is a critical use after free vulnerability in n/a, published on 7 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Irssi before 1.0.4. While updating the internal nick list, Irssi could incorrectly use the GHashTable interface and free the nick while updating it. This would then result in use-after-free conditions on each access of the hash table.

Weakness: CWE-416

Which versions are affected by CVE-2017-10966?

It affects 1 product.

Products include Irssi Irssi.

How do I fix CVE-2017-10966?

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-2017-10966 being exploited?

There is no known exploitation of CVE-2017-10966 in the wild and no public exploit code.

Sources

Also known as ALPINE-CVE-2017-10966, DEBIAN-CVE-2017-10966, GHSA-3jw8-77gg-583w, UBUNTU-CVE-2017-10966.