USN-1595-1: libxslt vulnerabilities

4 October 2012

libxslt vulnerabilities

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS

Summary

Applications using libxslt could be made to crash or run programs as your login if they processed a specially crafted file.

Software Description

  • libxslt - XSLT processing library

Details

Chris Evans discovered that libxslt incorrectly handled generate-id XPath functions. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could obtain potentially sensitive information. This issue only affected Ubuntu 8.04 LTS, Ubuntu 10.04 LTS and Ubuntu 11.04. (CVE-2011-1202)

It was discovered that libxslt incorrectly parsed certain patterns. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service. (CVE-2011-3970)

Nicholas Gregoire discovered that libxslt incorrectly handled unexpected DTD nodes. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service. (CVE-2012-2825)

Nicholas Gregoire discovered that libxslt incorrectly managed memory. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service. (CVE-2012-2870)

Nicholas Gregoire discovered that libxslt incorrectly handled certain transforms. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service, or possibly execute arbitrary code. (CVE-2012-2871)

Cris Neckar discovered that libxslt incorrectly managed memory. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service, or possibly execute arbitrary code. (CVE-2012-2893)

Update instructions

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

Ubuntu 12.04 LTS
libxslt1.1 - 1.1.26-8ubuntu1.2
Ubuntu 11.10
libxslt1.1 - 1.1.26-7ubuntu0.1
Ubuntu 11.04
libxslt1.1 - 1.1.26-6ubuntu0.1
Ubuntu 10.04 LTS
libxslt1.1 - 1.1.26-1ubuntu1.1
Ubuntu 8.04 LTS
libxslt1.1 - 1.1.22-1ubuntu1.3

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

In general, a standard system update will make all the necessary changes.

References