USN-1784-1: libxslt vulnerability

Ubuntu Security Notice USN-1784-1

2nd April, 2013

libxslt vulnerability

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

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS


Applications using libxslt could be made to crash if they processed a specially crafted file.

Software description

  • libxslt - XSLT processing library


Nicholas Gregoire discovered that libxslt incorrectly handled certain empty
values. 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.

Update instructions

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

Ubuntu 12.10:
libxslt1.1 1.1.26-14ubuntu0.1
Ubuntu 12.04 LTS:
libxslt1.1 1.1.26-8ubuntu1.3
Ubuntu 11.10:
libxslt1.1 1.1.26-7ubuntu0.2
Ubuntu 10.04 LTS:
libxslt1.1 1.1.26-1ubuntu1.2
Ubuntu 8.04 LTS:
libxslt1.1 1.1.22-1ubuntu1.4

To update your system, please follow these instructions:

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