Microsoft Internet Explorer up to 6 CSS Parser memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Microsoft Internet Explorer up to 6. This impacts an unknown function of the component CSS Parser. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2007-0943. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Internet Explorer up to 6 (Web Browser). This affects some unknown functionality of the component CSS Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Unspecified vulnerability in Internet Explorer 5.01 and 6 SP1 allows remote attackers to execute arbitrary code via crafted Cascading Style Sheets (CSS) strings that trigger memory corruption during parsing, related to use of out-of-bounds pointers.

The weakness was presented 08/14/2007 by Hu Qianwei with Microsoft as MS07-045 as confirmed bulletin (Technet). It is possible to read the advisory at microsoft.com. This vulnerability is uniquely identified as CVE-2007-0943 since 02/14/2007. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 102058 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100050 (Cumulative Security Update for Internet Explorer (MS07-045)).

Upgrading eliminates this vulnerability. Applying the patch MS07-045 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 12277. In this case the pattern Content-Type|3A| text/css is used for detection. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 9020.

The vulnerability is also documented in the databases at X-Force (35760), Tenable (102058), SecurityFocus (BID 25288†), OSVDB (36397†) and Secunia (SA26419†). See VDB-3244, VDB-3245, VDB-17939 and VDB-96104 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102058
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 102058
OpenVAS Name: Cumulative Security Update for Internet Explorer (937143)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS07-045

Snort ID: 12277
Snort Message: EXPLOIT Microsoft IE CSS memory corruption exploit
Snort Pattern: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
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Timelineinfo

02/14/2007 🔍
08/14/2007 +181 days 🔍
08/14/2007 +0 days 🔍
08/14/2007 +0 days 🔍
08/14/2007 +0 days 🔍
08/14/2007 +0 days 🔍
08/14/2007 +0 days 🔍
08/14/2007 +0 days 🔍
08/15/2007 +0 days 🔍
08/20/2007 +5 days 🔍
07/08/2010 +1053 days 🔍
03/15/2021 +3903 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS07-045
Researcher: Hu Qianwei
Organization: Microsoft
Status: Confirmed

CVE: CVE-2007-0943 (🔍)
GCVE (CVE): GCVE-0-2007-0943
GCVE (VulDB): GCVE-100-3243

OVAL: 🔍

X-Force: 35760
SecurityFocus: 25288 - Microsoft Internet Explorer CSS Strings Memory Corruption Vulnerability
Secunia: 26419 - Microsoft Internet Explorer Multiple Vulnerabilities, Highly Critical
OSVDB: 36397 - Microsoft IE Crafted CSS Unspecified Memory Corruption
SecurityTracker: 1018562 - Microsoft Internet Explorer CSS and ActiveX Control Bugs Let Remote Users Execute Arbitrary Code
Vulnerability Center: 15864 - [MS07-045] Internet Explorer 5.01 Vulnerability Allows Code Execution via Crafted CSS Strings, Medium
Vupen: ADV-2007-2869

See also: 🔍

Entryinfo

Created: 08/20/2007 08:42
Updated: 03/15/2021 16:38
Changes: 08/20/2007 08:42 (93), 04/07/2017 12:01 (14), 03/15/2021 16:38 (2)
Complete: 🔍
Cache ID: 216:33D:103

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