Dzip is a compressor and uncompressor especially made for demo recordings of id's Quake.
Dzip is vulnerable to a directory traversal attack when extracting archives.
An attacker could exploit this vulnerability by creating a specially crafted archive to extract files to arbitrary locations.
There is no known workaround at this time.
All Dzip users should upgrade to the latest available version:
# emerge --sync # emerge --ask --oneshot --verbose ">=games-utils/dzip-2.9-r1"