Debian: DSA-2478-1: sudo security update
Summary
It was discovered that sudo misparsed network masks used in Host and
Host_List stanzas. This allowed the execution of commands on hosts,
where the user would not be allowed to run the specified command.
For the stable distribution (squeeze), this problem has been fixed in
version 1.7.4p4-2.squeeze.3.
For the unstable distribution (sid), this problem will be fixed soon.
We recommend that you upgrade your sudo packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org