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USN-357-1: Mono vulnerability

5 October 2006

Mono vulnerability

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Releases

Details

Sebastian Krahmer of the SuSE security team discovered that the
System.CodeDom.Compiler classes used temporary files in an insecure
way. This could allow a symbolic link attack to create or overwrite
arbitrary files with the privileges of the user invoking the program.
Under some circumstances, a local attacker could also exploit this to
inject arbitrary code into running Mono processes.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 6.06
  • mono-classlib-2.0 - 1.1.13.6-0ubuntu3.1
  • mono-classlib-1.0 - 1.1.13.6-0ubuntu3.1
Ubuntu 5.10
  • mono-classlib-2.0 - 1.1.8.3-1ubuntu2.1
  • mono-classlib-1.0 - 1.1.8.3-1ubuntu2.1

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

References