Microsoft Internet Explorer up to 6.0 mshtml.dll null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Microsoft Internet Explorer up to 6.0. This affects an unknown function in the library mshtml.dll. Executing a manipulation can lead to null pointer dereference. The identification of this vulnerability is CVE-2006-7030. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability classified as problematic was found in Microsoft Internet Explorer up to 6.0 (Web Browser). This vulnerability affects an unknown part in the library mshtml.dll. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

Microsoft Internet Explorer 6 SP2 and earlier allows remote attackers to cause a denial of service (crash) via certain malformed HTML, possibly involving applet and base tags without required arguments, which triggers a null pointer dereference in mshtml.dll.

The weakness was shared 02/22/2007 by Thomas Waldegger as not defined posting (Bugtraq). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2006-7030 since 02/22/2007. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (26808) and SecurityFocus (BID 18112†). The entries VDB-35165 and VDB-35163 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/26/2006 🔍
02/22/2007 +272 days 🔍
02/22/2007 +0 days 🔍
02/22/2007 +0 days 🔍
03/13/2015 +2941 days 🔍
07/13/2021 +2314 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: securityfocus.com⛔
Researcher: Thomas Waldegger
Status: Not defined

CVE: CVE-2006-7030 (🔍)
GCVE (CVE): GCVE-0-2006-7030
GCVE (VulDB): GCVE-100-35164
X-Force: 26808 - Microsoft Internet Explorer HTML tag parsing denial of service
SecurityFocus: 18112 - Microsoft Internet Explorer Malformed HTML Parsing Denial of Service Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/13/2015 12:16
Updated: 07/13/2021 14:34
Changes: 03/13/2015 12:16 (47), 04/07/2017 12:08 (7), 07/13/2021 14:34 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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