Ubuntu Security Notice USN-7000-1

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

expat vulnerabilities
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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