The (1) gzexe, (2) zdiff, and (3) znew scripts in the gzip package, as used by other packages such as ncompress, allows local users to overwrite files via a symlink attack on temporary files. NOTE: the znew vulnerability may overlap CVE-2003-0367.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17583
http://www.zataz.net/adviso/ncompress-09052005.txt
http://www.trustix.org/errata/2004/0050
http://www.securityfocus.com/bid/11288