[USN-7000-1] Expat vulnerabilities

[Ian Constantin]

==========================================================================
Ubuntu Security Notice USN-7000-1
September 12, 2024

expat vulnerabilities
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Expat.

Software Description:
- expat: XML parsing C library

Details:

Shang-Hung Wan discovered that Expat did not properly handle certain
function calls when a negative input length was provided. An attacker
could use this issue to cause a denial of service or possibly execute
arbitrary code. (CVE-2024-45490)

Shang-Hung Wan discovered that Expat did properly handle the potential
for an integer overflow on 32-bit platforms. An attacker could use this
issue to cause a denial of service or possibly execute arbitrary code.
(CVE-2024-45491, CVE-2024-45492)

Update instructions:

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

Ubuntu 24.04 LTS
   expat                           2.6.1-2ubuntu0.1
   libexpat1                       2.6.1-2ubuntu0.1

Ubuntu 20.04 LTS
   expat                           2.2.9-1ubuntu0.7
   libexpat1                       2.2.9-1ubuntu0.7

Ubuntu 18.04 LTS
   expat                           2.2.5-3ubuntu0.9+esm1
                                   Available with Ubuntu Pro
   libexpat1                       2.2.5-3ubuntu0.9+esm1
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   expat                           2.1.0-7ubuntu0.16.04.5+esm9
                                   Available with Ubuntu Pro
   lib64expat1                     2.1.0-7ubuntu0.16.04.5+esm9
                                   Available with Ubuntu Pro
   libexpat1                       2.1.0-7ubuntu0.16.04.5+esm9
                                   Available with Ubuntu Pro

Ubuntu 14.04 LTS
   expat                           2.1.0-4ubuntu1.4+esm9
                                   Available with Ubuntu Pro
   lib64expat1                     2.1.0-4ubuntu1.4+esm9
                                   Available with Ubuntu Pro
   libexpat1                       2.1.0-4ubuntu1.4+esm9
                                   Available with Ubuntu Pro

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

References:
   https://ubuntu.com/security/notices/USN-7000-1
   CVE-2024-45490, CVE-2024-45491, CVE-2024-45492

Package Information:
   https://launchpad.net/ubuntu/+source/expat/2.6.1-2ubuntu0.1
   https://launchpad.net/ubuntu/+source/expat/2.2.9-1ubuntu0.7

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