[USN-7000-2] Expat vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7000-2
September 17, 2024

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

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

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in Expat.

Software Description:
- expat: XML parsing C library

Details:

USN-7000-1 fixed vulnerabilities in Expat. This update
provides the corresponding updates for Ubuntu 22.04 LTS.

Original advisory 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 not 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 22.04 LTS
  expat                           2.4.7-1ubuntu0.4
  libexpat1                       2.4.7-1ubuntu0.4

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

References:
  https://ubuntu.com/security/notices/USN-7000-2
  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/2.4.7-1ubuntu0.4