Ubuntu 16.04 LTS: USN-3010-1 Critical Expat Denial of Service Issue

ubuntu

June 20, 2016

Several security issues were fixed in Expat.

Summary

Several security issues were fixed in Expat.

Software Description:

- expat: XML parsing C library

Details:

It was discovered that Expat unexpectedly called srand in certain

circumstances. This could reduce the security of calling applications.

(CVE-2012-6702)

It was discovered that Expat incorrectly handled seeding the random number

generator. A remote attacker could possibly use this issue to cause a

denial of service. (CVE-2016-5300)

Topics Covered

security advisory denial of service critical software update ubuntu expat xml parsing

Update Instructions

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

Ubuntu 16.04 LTS:
  lib64expat1                     2.1.0-7ubuntu0.16.04.2
  libexpat1                       2.1.0-7ubuntu0.16.04.2

Ubuntu 15.10:
  lib64expat1                     2.1.0-7ubuntu0.15.10.2
  libexpat1                       2.1.0-7ubuntu0.15.10.2

Ubuntu 14.04 LTS:
  lib64expat1                     2.1.0-4ubuntu1.3
  libexpat1                       2.1.0-4ubuntu1.3

Ubuntu 12.04 LTS:
  lib64expat1                     2.0.1-7.2ubuntu1.4
  libexpat1                       2.0.1-7.2ubuntu1.4

After a standard system upgrade you need to restart any applications linked
against Expat to effect the necessary changes.