Ubuntu Security Notice USN-294-1
9th June, 2006
courier vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 6.06 LTS
- Ubuntu 5.10
- Ubuntu 5.04
Details
A Denial of Service vulnerability has been found in the function for
encoding email addresses. Addresses containing a '=' before the '@'
character caused the Courier to hang in an endless loop, rendering the
service unusable.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 6.06 LTS:
- courier-mta 0.47-13ubuntu5.1
- Ubuntu 5.10:
- courier-mta 0.47-3ubuntu7.2
- Ubuntu 5.04:
- courier-mta 0.47-3ubuntu1.5
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.