Unzip 5.51 and earlier does not properly warn the user when extracting setuid or setgid files, which may allow local users to gain privileges.
http://www.vupen.com/english/advisories/2007/3866
http://www.trustix.org/errata/2005/0053/
http://www.securityfocus.com/bid/14447
http://www.mandriva.com/security/advisories?name=MDKSA-2005:197
http://www.info-zip.org/FAQ.html
http://sunsolve.sun.com/search/document.do?assetkey=1-66-200844-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-103150-1
http://secunia.com/advisories/27684
http://secunia.com/advisories/17342