The remote host is missing an update as announced via advisory SSA:2003-141-03.
An integer overflow in the xdrmem_getbytes() function found in the glibc library has been fixed. This could allow a remote attacker to execute arbitrary code by exploiting RPC service that use xdrmem_getbytes(). None of the default RPC services provided by Slackware appear to use this function, but third-party applications may make use of it. We recommend upgrading to these new glibc packages.