The remote host is missing an update to gzip announced via advisory DSA 308-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20308-1

Paul Szabo discovered that znew, a script included in the gzip package, creates its temporary files without taking precautions to avoid a symlink attack (CVE-2003-0367). The gzexe script has a similar vulnerability which was patched in an earlier release but inadvertently reverted. For the stable distribution (woody) both problems have been fixed in version 1.3.2-3woody1. For the old stable distribution (potato) CVE-2003-0367 has been fixed in version 1.2.4-33.2. This version is not vulnerable to CVE-1999-1332 due to an earlier patch. For the unstable distribution (sid) this problem will be fixed soon. We recommend that you update your gzip package.