USN-7145-1: Expat vulnerability

Publication date

10 December 2024

Overview

Expat could be made to crash if an unstarted parser was resumed.


Packages

  • expat - XML parsing C library

Details

It was discovered that Expat did not properly handle its internal state
when attempting to resume an unstarted parser. An attacker could use this
issue to cause a denial of service (application crash).

It was discovered that Expat did not properly handle its internal state
when attempting to resume an unstarted parser. An attacker could use this
issue to cause a denial of service (application crash).

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
24.10 oracular expat –  2.6.2-2ubuntu0.1
libexpat1 –  2.6.2-2ubuntu0.1
libexpat1-dev –  2.6.2-2ubuntu0.1
24.04 noble expat –  2.6.1-2ubuntu0.2
libexpat1 –  2.6.1-2ubuntu0.2
libexpat1-dev –  2.6.1-2ubuntu0.2
22.04 jammy expat –  2.4.7-1ubuntu0.5
libexpat1 –  2.4.7-1ubuntu0.5
libexpat1-dev –  2.4.7-1ubuntu0.5
20.04 focal expat –  2.2.9-1ubuntu0.8
libexpat1 –  2.2.9-1ubuntu0.8
libexpat1-dev –  2.2.9-1ubuntu0.8
18.04 bionic expat –  2.2.5-3ubuntu0.9+esm2  
libexpat1 –  2.2.5-3ubuntu0.9+esm2  
libexpat1-dev –  2.2.5-3ubuntu0.9+esm2  
16.04 xenial expat –  2.1.0-7ubuntu0.16.04.5+esm10  
lib64expat1 –  2.1.0-7ubuntu0.16.04.5+esm10  
lib64expat1-dev –  2.1.0-7ubuntu0.16.04.5+esm10  
libexpat1 –  2.1.0-7ubuntu0.16.04.5+esm10  
libexpat1-dev –  2.1.0-7ubuntu0.16.04.5+esm10  
14.04 trusty expat –  2.1.0-4ubuntu1.4+esm10  
lib64expat1 –  2.1.0-4ubuntu1.4+esm10  
lib64expat1-dev –  2.1.0-4ubuntu1.4+esm10  
libexpat1 –  2.1.0-4ubuntu1.4+esm10  
libexpat1-dev –  2.1.0-4ubuntu1.4+esm10  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›