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USN-2440-1: Mutt vulnerability

11 December 2014

The mutt mail client could be made to crash if it opened a specially crafted email.

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Releases

Packages

  • mutt - text-based mailreader supporting MIME, GPG, PGP and threading

Details

Jakub Wilk discovered that the write_one_header function in mutt
did not properly handle newline characters at the beginning of a
header. An attacker could specially craft an email to cause mutt to
crash, resulting in a denial of service.

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 14.10
Ubuntu 14.04
Ubuntu 12.04
Ubuntu 10.04

After a standard system update you need to restart any running
instances of mutt to make all the necessary changes.

References