Ubuntu Security Notice USN-507-1
29th August, 2007
tcp-wrappers vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.04
Software description
- tcp-wrappers
Details
It was discovered that the TCP wrapper library was incorrectly allowing
connections to services that did not specify server-side connection
details. Remote attackers could connect to services that had been
configured to block such connections. This only affected Ubuntu Feisty.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 7.04:
- libwrap0 7.6.dbs-11ubuntu0.1
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.