USN-436-2: KTorrent vulnerability

18 May 2007

KTorrent vulnerability

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Releases

Details

USN-436-1 fixed a vulnerability in KTorrent. The original fix for path
traversal was incomplete, allowing for alternate vectors of attack.
This update solves the problem.

Original advisory details:

Bryan Burns of Juniper Networks discovered that KTorrent did not
correctly validate the destination file paths nor the HAVE statements
sent by torrent peers. A malicious remote peer could send specially
crafted messages to overwrite files or execute arbitrary code with user
privileges.

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Update instructions

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

Ubuntu 7.04
  • ktorrent - 2.1-0ubuntu2.1
Ubuntu 6.10
  • ktorrent - 2.0.3+dfsg1-0ubuntu1.2
Ubuntu 6.06
  • ktorrent - 1.2-0ubuntu5.2

After a standard system upgrade you need to restart KTorrent to effect
the necessary changes.

References

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Further reading