USN-633-1: libxslt vulnerabilities

Ubuntu Security Notice USN-633-1

1st August, 2008

libxslt vulnerabilities

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

  • Ubuntu 8.04 LTS
  • Ubuntu 7.10
  • Ubuntu 7.04
  • Ubuntu 6.06 LTS

Software description

  • libxslt

Details

It was discovered that long transformation matches in libxslt could
overflow. If an attacker were able to make an application linked against
libxslt process malicious XSL style sheet input, they could execute
arbitrary code with user privileges or cause the application to crash,
leading to a denial of serivce. (CVE-2008-1767)

Chris Evans discovered that the RC4 processing code in libxslt did not
correctly handle corrupted key information. If a remote attacker were
able to make an application linked against libxslt process malicious
XML input, they could crash the application, leading to a denial of
service. (CVE-2008-2935)

Update instructions

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

Ubuntu 8.04 LTS:
libxslt1.1 1.1.22-1ubuntu1.2
Ubuntu 7.10:
libxslt1.1 1.1.21-2ubuntu2.2
Ubuntu 7.04:
libxslt1.1 1.1.20-0ubuntu2.2
Ubuntu 6.06 LTS:
libxslt1.1 1.1.15-1ubuntu1.2

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

In general, a standard system upgrade is sufficient to effect the
necessary changes.

References

CVE-2008-1767, CVE-2008-2935