Input validation error in Gajim - CVE-2021-41055

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Main Vulnerability Database Vulnerabilities #VU60244

Input validation error in Gajim - CVE-2021-41055

Published: February 2, 2022


Vulnerability identifier: #VU60244
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-41055
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted XMPP Last Message Correction (XEP-0308) message in multi-user chat, where the message ID equals the correction ID and perform a denial of service (DoS) attack.


Affected software

Gajim
python-nbxmpp (Debian package)

How to mitigate CVE-2021-41055

Install updates from vendor's website.

Gajim - update to 1.3.3
python-nbxmpp (Debian package) - update to 2.0.2-1+deb11u1

External References

Related Security Bulletins