The remote host is missing an update to ipmitool announced via advisory DSA 2376-2.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202376-2

It was discovered that OpenIPMI, the Intelligent Platform Management Interface library and tools, used too wide permissions PID file, which allows local users to kill arbitrary processes by writing to this file. The original announcement didn't contain corrections for the Debian 5.0 lenny distribution. This update adds packages for lenny. For the oldstable distribution (lenny), this problem has been fixed in version 1.8.9-2+squeeze1. (Although the version number contains the string squeeze, this is in fact an update for lenny.) For the stable distribution (squeeze), this problem has been fixed in version 1.8.11-2+squeeze2. For the unstable distribution (sid), this problem has been fixed in version 1.8.11-5. We recommend that you upgrade your ipmitool packages.