CVE-2005-2934

Local exploitation of an access validation error in SCO Unixware allows attackers to gain root privileges. The vulnerability specifically exists due to a failure to check permissions on traced executables. The ptrace() system call provides an interface for debugging other processes on the system. SCO Unixware's implementation of the ptrace system call fails to check for setuid permissions on binaries before attaching to the process. This results in the complete control of memory and execution for the traced process with root privileges. Attackers can inject data into the running setuid process and execute arbitrary code with root permissions. iDefense has confirmed the existence of this vulnerability in SCO Unixware versions 7.1.3 and 7.1.4. All previous versions of SCO Unixware are suspected to be vulnerable.