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From: Hlib Korzhynskyy <hlib.korzhynskyy@canonical.com>
Reply-To: security@ubuntu.com
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <1813df75-4669-4b32-a471-22e1ea74742c@canonical.com>
Subject: [USN-7275-1] Libtasn1 vulnerability

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==========================================================================
Ubuntu Security Notice USN-7275-1
February 18, 2025

libtasn1-6 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Libtasn1 could be made to crash if it received specially crafted network
traffic.

Software Description:
- libtasn1-6: Library to manage ASN.1 structures

Details:

Bing Shi discovered that Libtasn1 inefficiently handled certificates. An
attacker could possibly use this issue to increase resource utilization
leading to a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.10
   libtasn1-6                      4.19.0-3ubuntu0.24.10.1
   libtasn1-bin                    4.19.0-3ubuntu0.24.10.1

Ubuntu 22.04 LTS
   libtasn1-6                      4.18.0-4ubuntu0.1
   libtasn1-bin                    4.18.0-4ubuntu0.1

Ubuntu 20.04 LTS
   libtasn1-6                      4.16.0-2ubuntu0.1
   libtasn1-bin                    4.16.0-2ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-7275-1
   CVE-2024-12133

Package Information:
https://launchpad.net/ubuntu/+source/libtasn1-6/4.19.0-3ubuntu0.24.10.1
https://launchpad.net/ubuntu/+source/libtasn1-6/4.18.0-4ubuntu0.1
https://launchpad.net/ubuntu/+source/libtasn1-6/4.16.0-2ubuntu0.1

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