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USN-4040-2: 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


USN-4040-1 fixed a vulnerability in expat. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

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 14.04
Ubuntu 12.04

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


Related notices

  • USN-4040-1: libexpat1-udeb, lib64expat1-dev, libexpat1-dev, lib64expat1, libexpat1, expat