Ubuntu Security Notice USN-7000-2

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

expat vulnerabilities
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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