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[USN-3010-1] Expat vulnerabilities

Posted on 20 June 2016
Ubuntu Security

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Ubuntu Security Notice USN-3010-1
June 20, 2016

expat vulnerabilities
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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 numbe=
r
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 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 link=
ed
against Expat to effect the necessary changes.

References:
http://www.ubuntu.com/usn/usn-3010-1
CVE-2012-6702, CVE-2016-5300

Package Information:
https://launchpad.net/ubuntu/+source/expat/2.1.0-7ubuntu0.16.04.2
https://launchpad.net/ubuntu/+source/expat/2.1.0-7ubuntu0.15.10.2
https://launchpad.net/ubuntu/+source/expat/2.1.0-4ubuntu1.3
https://launchpad.net/ubuntu/+source/expat/2.0.1-7.2ubuntu1.4



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