A vulnerability has been discovered in ruby1.8 that could allow arbitrary command execution on a server running the ruby xmlrpc server.
The old stable distribution (woody) did not include ruby1.8.
This problem is fixed for the current stable distribution (sarge) in version 1.8.2-7sarge1.
This problem is fixed for the unstable distribution in version 1.8.2-8.
We recommend that you upgrade your ruby1.8 package.
MD5 checksums of the listed files are available in the original advisory.