Description
An X server's access control is disabled (e.g. through an "xhost +" command) and allows anyone to connect to the server.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 3 modules
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X11 No-Auth Scanner
auxiliary/scanner/x11/open_x11
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X11 Keylogger
auxiliary/gather/x11_keyboard_spy
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X11 Keyboard Command Injection
exploit/unix/x11/x11_keyboard_exec
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- VU#704969 third-party-advisory