The remote host is missing an update to dietlibc announced via advisory DSA 272-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20272-1

eEye Digital Security discovered an integer overflow in the xdrmem_getbytes() function of glibc, that is also present in dietlibc, a small libc useful especially for small and embedded systems. This function is part of the XDR encoder/decoder derived from Sun's RPC implementation. Depending upon the application, this vulnerability can cause buffer overflows and could possibly be exploited to execute arbitray code. For the stable distribution (woody) this problem has been fixed in version 0.12-2.5. The old stable distribution (potato) does not contain dietlibc packages. For the unstable distribution (sid) this problem has been fixed in version 0.22-2. We recommend that you upgrade your dietlibc packages.