The remote host is missing an update to ipmitool announced via advisory DSA 2376-1.
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. 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.