Debian Security Advisory
DSA-3597-1 expat -- security update
- Date Reported:
- 07 Jun 2016
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2012-6702, CVE-2016-5300.
- More information:
Two related issues have been discovered in Expat, a C library for parsing XML.
It was introduced when CVE-2012-0876 was addressed. Stefan Sørensen discovered that the use of the function XML_Parse() seeds the random number generator generating repeated outputs for rand() calls.
It is the product of an incomplete solution for CVE-2012-0876. The parser poorly seeds the random number generator allowing an attacker to cause a denial of service (CPU consumption) via an XML file with crafted identifiers.
You might need to manually restart programs and services using expat libraries.
For the stable distribution (jessie), these problems have been fixed in version 2.1.0-6+deb8u3.
For the unstable distribution (sid), these problems have been fixed in version 2.1.1-3.
We recommend that you upgrade your expat packages.