Ubuntu Security Notice USN-507-1 August 30, 2007==========20================================================= tcp-wrappers vulnerability https://launchpad.net/bugs/135332 ========================================================== A security issue affects the following Ubuntu releases:
This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.
The problem can be corrected by upgrading your system to the following package versions:
Ubuntu 7.04: libwrap0 7.6.dbs-11ubuntu0.1
In general, a standard system upgrade is sufficient to effect the necessary changes.
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.