USN-3010-1: Expat vulnerabilities

Ubuntu Security Notice USN-3010-1

20th June, 2016

expat vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 16.04 LTS
• Ubuntu 15.10
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

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)

Update instructions

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

Ubuntu 16.04 LTS:

libexpat1 2.1.0-7ubuntu0.16.04.2

lib64expat1 2.1.0-7ubuntu0.16.04.2

Ubuntu 15.10:

libexpat1 2.1.0-7ubuntu0.15.10.2

lib64expat1 2.1.0-7ubuntu0.15.10.2

Ubuntu 14.04 LTS:

libexpat1 2.1.0-4ubuntu1.3

lib64expat1 2.1.0-4ubuntu1.3

Ubuntu 12.04 LTS:

libexpat1 2.0.1-7.2ubuntu1.4

lib64expat1 2.0.1-7.2ubuntu1.4

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2012-6702, CVE-2016-5300