Ubuntu Security Notice USN-2440-1
11th December, 2014
mutt vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
The mutt mail client could be made to crash if it opened a specially
crafted email.
Software description
- 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.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.10:
-
mutt-patched
1.5.23-1.1ubuntu0.2
-
mutt
1.5.23-1.1ubuntu0.2
- Ubuntu 14.04 LTS:
-
mutt-patched
1.5.21-6.4ubuntu2.1
-
mutt
1.5.21-6.4ubuntu2.1
- Ubuntu 12.04 LTS:
-
mutt-patched
1.5.21-5ubuntu2.2
-
mutt
1.5.21-5ubuntu2.2
- Ubuntu 10.04 LTS:
-
mutt-patched
1.5.20-7ubuntu1.3
-
mutt
1.5.20-7ubuntu1.3
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart any running
instances of mutt to make all the necessary changes.