Ubuntu 19.04: 4040-1 High RAM Consumption: Expat Denial Of Service

ubuntu

June 26, 2019

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

Summary

Expat could be made to consume a high amount of RAM and CPU resources

if it received a specially crafted XML file.

Software Description:

- expat: XML parsing C library

Details:

It was discovered that Expat incorrectly handled certain XML files.

An attacker could possibly use this issue to cause a denial of service.

Topics Covered

security advisory denial of service ubuntu expat RAM consumption

Update Instructions

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

Ubuntu 19.04:
  libexpat1                       2.2.6-1ubuntu0.19.04

Ubuntu 18.10:
  libexpat1                       2.2.6-1ubuntu0.18.10

Ubuntu 18.04 LTS:
  libexpat1                       2.2.5-3ubuntu0.1

Ubuntu 16.04 LTS:
  lib64expat1                     2.1.0-7ubuntu0.16.04.4
  libexpat1                       2.1.0-7ubuntu0.16.04.4

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