EMC Legato NetWorker, Sun Solstice Backup 6.0 and 6.1, and StorEdge Enterprise Backup 7.0 through 7.2 rely on AUTH_UNIX authentication, which relies on user ID for authentication and allows remote attackers to bypass authentication and gain privileges by spoofing a username or UID.
https://exchange.xforce.ibmcloud.com/vulnerabilities/21887
http://www.securityfocus.com/bid/14582
http://www.legato.com/support/websupport/product_alerts/081605_NW_authentication.htm
http://www.kb.cert.org/vuls/id/606857
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101886-1
http://securitytracker.com/id?1014713