NFS on SunOS 4.1 through 4.1.2 ignores the high order 16 bits in a 32 bit UID, which allows a local user to gain root access if the lower 16 bits are set to 0, as fixed by the NFS jumbo patch upgrade.Referenceshttp://www.cert.org/advisories/CA-1992-15.htmlhttp://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/117&type=0&nav=sec.sbahttp://www.securityfocus.com/bid/47https://exchange.xforce.ibmcloud.com/vulnerabilities/82
