CVE-2021-41055 Denial of service in n/a

High 7.5 Published Updated

Remote attackers can crash Gajim by sending a crafted XMPP Last Message Correction message in multi-user chats.

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

What is CVE-2021-41055?

CVE-2021-41055 is a high-severity denial of service vulnerability in n/a, published on 11 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Gajim 1.2.x and 1.3.x before 1.3.3 allows remote attackers to cause a denial of service (crash) via a crafted XMPP Last Message Correction (XEP-0308) message in multi-user chat, where the message ID equals the correction ID.

Which versions are affected by CVE-2021-41055?

It affects 1 product.

Linux distribution packages (1)
gajim openSUSE:TumbleweedAll versions1.3.3-1.1

Products include Gajim Gajim.

How do I fix CVE-2021-41055?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-41055 being exploited?

There is no known exploitation of CVE-2021-41055 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2021-41055, DSA-5064-1, GHSA-r23x-224g-484r, MGASA-2022-0179, UBUNTU-CVE-2021-41055, openSUSE-SU-2024:11734-1.

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