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USN-4040-1: Expat vulnerability

26 June 2019

Expat could be made to consume a high amount of RAM and CPU resources if it received a specially crafted XML file.



  • expat - XML parsing C library


It was discovered that Expat incorrectly handled certain XML files.
An attacker could possibly use this issue to cause a denial of service.

Update instructions

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

Ubuntu 19.04
Ubuntu 18.10
Ubuntu 18.04
Ubuntu 16.04

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


Related notices

  • USN-4040-2: lib64expat1, lib64expat1-dev, libexpat1, libexpat1-udeb, libexpat1-dev, expat