=========================================================================Ubuntu Security Notice USN-5638-2
November 17, 2022
expat vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Expat could be made to crash or execute arbitrary code.
Software Description:
- expat: XML parsing C library
Details:
USN-5638-1 fixed a vulnerability in Expat. This update provides
the corresponding updates for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS.
Original advisory details:
Rhodri James discovered that Expat incorrectly handled memory when
processing certain malformed XML files. An attacker could possibly
use this issue to cause a crash or execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS:
expat 2.4.7-1ubuntu0.1
libexpat1 2.4.7-1ubuntu0.1
Ubuntu 20.04 LTS:
expat 2.2.9-1ubuntu0.5
libexpat1 2.2.9-1ubuntu0.5
Ubuntu 18.04 LTS:
expat 2.2.5-3ubuntu0.8
libexpat1 2.2.5-3ubuntu0.8
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5638-2
https://ubuntu.com/security/notices/USN-5638-1
CVE-2022-40674, CVE-2022-43680
Package Information:
https://launchpad.net/ubuntu/+source/expat/2.4.7-1ubuntu0.1
https://launchpad.net/ubuntu/+source/expat/2.2.9-1ubuntu0.5
https://launchpad.net/ubuntu/+source/expat/2.2.5-3ubuntu0.8
