USN-1527-1: Expat vulnerabilities
10 August 2012
Expat could be made to cause a denial of service by consuming excessive CPU and memory resources.
Releases
Packages
- expat - XML parsing C library - example application
Details
It was discovered that Expat computed hash values without restricting the
ability to trigger hash collisions predictably. If a user or application linked
against Expat were tricked into opening a crafted XML file, an attacker could
cause a denial of service by consuming excessive CPU resources. (CVE-2012-0876)
Tim Boddy discovered that Expat did not properly handle memory reallocation
when processing XML files. If a user or application linked against Expat were
tricked into opening a crafted XML file, an attacker could cause a denial of
service by consuming excessive memory resources. This issue only affected
Ubuntu 8.04 LTS, 10.04 LTS, 11.04 and 11.10. (CVE-2012-1148)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 8.04
Ubuntu 12.04
Ubuntu 11.10
-
lib64expat1
-
2.0.1-7ubuntu3.11.10.1
-
libexpat1-udeb
-
2.0.1-7ubuntu3.11.10.1
-
libexpat1
-
2.0.1-7ubuntu3.11.10.1
Ubuntu 11.04
-
lib64expat1
-
2.0.1-7ubuntu3.11.04.1
-
libexpat1-udeb
-
2.0.1-7ubuntu3.11.04.1
-
libexpat1
-
2.0.1-7ubuntu3.11.04.1
Ubuntu 10.04
After a standard system upgrade you need to restart any applications linked
against Expat to effect the necessary changes.
References
Related notices
- USN-1527-2: xmlrpc-c, libxmlrpc-core-c3, libxmlrpc-core-c3-0
- USN-1613-1: python2.5, python2.5-minimal
- USN-1613-2: python2.4, python2.4-minimal
- USN-5455-1: libxmltok, libxmltok1-dev, libxmltok1