USN-3010-1: Expat vulnerabilities

Releases

• Ubuntu 16.04 ESM
• Ubuntu 15.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• 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 versions:

Ubuntu 16.04

• 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

• lib64expat1 - 2.1.0-4ubuntu1.3
• libexpat1 - 2.1.0-4ubuntu1.3

Ubuntu 12.04

• 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.

References

• CVE-2012-6702
• CVE-2016-5300

Related notices

• USN-3013-1: libxmlrpc-core-c3, libxmlrpc-c++4, xmlrpc-c