The remote host is missing an update to perl announced via advisory DSA 696-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20696-1

Paul Szabo discovered another vulnerability in the File::Path::rmtree function of perl, the popular scripting language. When a process is deleting a directory tree, a different user could exploit a race condition to create setuid binaries in this directory tree, provided that he already had write permissions in any subdirectory of that tree. For the stable distribution (woody) this problem has been fixed in version 5.6.1-8.9. For the unstable distribution (sid) this problem has been fixed in version 5.8.4-8. We recommend that you upgrade your perl packages.