CVE-2019-20918 Use after free in n/a

Medium 6.5 Published 11 Sep 2020 Updated 5 Aug 2024

A use-after-free flaw in the silence module allows remote attackers to crash the InspIRCd server.

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

What is CVE-2019-20918?

CVE-2019-20918 is a medium-severity use after free vulnerability in n/a, published on 11 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in InspIRCd 3 before 3.1.0. The silence module contains a use after free vulnerability. This vulnerability can be used for remote crashing of an InspIRCd server by any user able to fully connect to a server.

Weakness: CWE-416

Which versions are affected by CVE-2019-20918?

It affects 1 product.

Products include Inspircd Inspircd.

How do I fix CVE-2019-20918?

No fix has been published for CVE-2019-20918 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-2019-20918 being exploited?

There is no known exploitation of CVE-2019-20918 in the wild and no public exploit code.

Sources

Also known as GHSA-3c6j-x3h2-c2j2.