This is the second entry in our research diary on IP cameras. If you haven’t done so yet, you should read the first entry in advance. This time we focused more on analysis and exploitation.
After running a vulnerability scan on both devices, it was revealed that the M1033 has multiple buffer overflow vulnerabilities (CVE-2012-5958 to CVE-2012-5965), which are readily exploitable via Metasploit. This gave us another shell (in addition to the root shell mentioned in the last post), though this time it was not a root shell. By using the find command, we searched for executables having the setuid or setgid bit set. We hoped to use one of those to escalate privileges. To do so yourself add the parameter -perm -4000 to find and it will search for files having the setuid bit set. If you try that on your own unix-like device, for example it should yield /bin/passwd which is perfectly reasonable as you’re able to change your password without being root.Continue reading