Ubuntu Security Notice USN-487-1
17th July, 2007
dovecot vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.04
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Details
It was discovered that Dovecot, when configured to use non-system-user
spools and compressed folders, would allow directory traversals in
mailbox names. Remote authenticated users could potentially read email
owned by other users.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 7.04:
- dovecot-common 1.0.rc17-1ubuntu2.1
- Ubuntu 6.10:
- dovecot-common 1.0.rc2-1ubuntu2.2
- Ubuntu 6.06 LTS:
- dovecot-common 1.0.beta3-3ubuntu5.5
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.