Microsoft Internet Explorer HTML Help HHCtrl ActiveX control buffer overflow
| ie-hhctrl-bo (27573) |  High Risk |
Description:
Microsoft Internet Explorer is vulnerable to a heap-based buffer overflow in the HTML Help ActiveX control (HHCtrl.ocx), caused by improper bounds checking of the 'Image' property. A remote attacker could exploit this vulnerability to overflow a buffer and cause a victim's browser to crash or possibly execute arbitrary code on the victim's system, if the attacker could persuade the victim to visit a malicious Web page.
*CVSS:
| Base Score: | 5.6 |
| Access Vector: | Remote |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 4.4 |
| Exploitability: | Proof-Of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS06-046. See References.
For Windows 2000 SP4, Windows Server 2003, and Server 2003 SP1:
Microsoft originally provided a patch for this vulnerability in MS06-046, but it was superseded by the patch released with MS07-008. See References.
References:
- Browser Fun Blog Sunday, July 02, 2006: MoBB #2: Internet.HHCtrl Image Property .
- Microsoft Security Bulletin MS06-046: Vulnerability in HTML Help Could Allow Remote Code Execution (922616).
- Microsoft Security Bulletin MS07-008: Vulnerability in HTML Help ActiveX Control Could Allow Remote Code Execution (928843).
- TSRT-06-08: Microsoft Internet Help COM Object Memory Corruption Vulnerability.
- US-CERT Technical Cyber Security Alert TA06-220A: Microsoft Windows, Office, and Internet Explorer Vulnerabilities.
- ASA-2006-154: Windows Security Updates for August 2006 - (MS06-040 - MS06-051)
- BID-18769: Microsoft Windows HTML Help HHCtrl ActiveX Control Memory Corruption Vulnerability
- CVE-2006-3357: Heap-based buffer overflow in HTML Help ActiveX control (hhctrl.ocx) in Microsoft Internet Explorer 6.0 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code by repeatedly setting the Image field of an Internet.HHCtrl.1 object to certain values, possibly related to improper escaping and long strings.
- SA20906: Windows HTML Help ActiveX Control Memory Corruption
- SECTRACK ID: 1016434: Microsoft HTML Help Heap Overflow in HHCtrl ActiveX Control May Let Remote Users Execute Arbitrary Code
- US-CERT VU#159220: Microsoft Internet Explorer vulnerable to heap overflow via the HTML Help Control "Image" property
- VUPEN/ADV-2006-2634: Microsoft Internet Explorer Data Access ActiveX Remote Denial of Service Vulnerability
- VUPEN/ADV-2006-2635: Microsoft Internet Explorer HTML Help Control HHCtrl Memory Corruption Vulnerability
Platforms Affected:
- Microsoft Internet Explorer 6.0
- Microsoft Internet Explorer 6.0 SP1
- Microsoft Internet Explorer 6.0 SP2
- Microsoft Windows 2000 SP4
- Microsoft Windows 2003 Server SP1
- Microsoft Windows 2003 Server SP1 Itanium
- Microsoft Windows 2003 Server x64
- Microsoft Windows 2003 Server Itanium
- Microsoft Windows XP SP1
- Microsoft Windows XP x64 Professional
Reported:
Jul 02, 2006
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For corrections or additions please email xforce@iss.net
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.