The remote host is missing an update to multipath-tools announced via advisory DSA 1767-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201767-1

It was discovered that multipathd of multipath-tools, a tool-chain to manage disk multipath device maps, uses insecure permissions on its unix domain control socket which enables local attackers to issue commands to multipathd prevent access to storage devices or corrupt file system data. For the oldstable distribution (etch), this problem has been fixed in version 0.4.7-1.1etch2. For the stable distribution (lenny), this problem has been fixed in version 0.4.8-14+lenny1. For the testing distribution (squeeze), this problem will be fixed soon. For the unstable distribution (sid), this problem has been fixed in version 0.4.8-15. We recommend that you upgrade your multipath-tools packages.