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From: Vyom Yadav <vyom.yadav@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <3eb840e1-b1bc-4cf7-bfb6-7fd4639d1194@canonical.com>
Subject: [USN-7424-1] Expat vulnerability

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==========================================================================
Ubuntu Security Notice USN-7424-1
April 08, 2025

expat vulnerability
==========================================================================

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

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Expat could be made to crash if it received specially crafted
input.

Software Description:
- expat: XML parsing C library

Details:

It was discovered that Expat could crash due to stack overflow when
processing XML documents with deeply nested entity references. If a user
or automated system were tricked into processing specially crafted XML
input, an attacker could use this issue to cause a denial of service.

Update instructions:

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

Ubuntu 24.10
   expat                           2.6.2-2ubuntu0.2
   libexpat1                       2.6.2-2ubuntu0.2

Ubuntu 24.04 LTS
   expat                           2.6.1-2ubuntu0.3
   libexpat1                       2.6.1-2ubuntu0.3

Ubuntu 22.04 LTS
   expat                           2.4.7-1ubuntu0.6
   libexpat1                       2.4.7-1ubuntu0.6

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

References:
   https://ubuntu.com/security/notices/USN-7424-1
   CVE-2024-8176

Package Information:
   https://launchpad.net/ubuntu/+source/expat/2.6.2-2ubuntu0.2
   https://launchpad.net/ubuntu/+source/expat/2.6.1-2ubuntu0.3
   https://launchpad.net/ubuntu/+source/expat/2.4.7-1ubuntu0.6

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