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Last updated: 5/27/2015 6:02:24 AM

CVE Publication rate: 12.57

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Vulnerability Workload Index: 6.11
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National Cyber Awareness System

Vulnerability Summary for CVE-2010-3971

Original release date: 12/22/2010
Last revised: 07/18/2011


Use-after-free vulnerability in the CSharedStyleSheet::Notify function in the Cascading Style Sheets (CSS) parser in mshtml.dll, as used in Microsoft Internet Explorer 6 through 8 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a self-referential @import rule in a stylesheet, aka "CSS Memory Corruption Vulnerability."


CVSS Severity (version 2.0):
CVSS v2 Base Score: 9.3 (HIGH) (AV:N/AC:M/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: FULLDISC
Name: 20101208 IE CSS parser dos bug
External Source: CONFIRM
Name: http://support.avaya.com/css/P8/documents/100127294
External Source: EXPLOIT-DB
Name: 15708
US-CERT Vulnerability Note: CERT-VN
Name: VU#634956
External Source: OVAL
Name: oval:org.mitre.oval:def:12382
External Source: EXPLOIT-DB
Name: 15746
External Source: MS
Name: MS11-003
External Source: BID
Name: 45246
External Source: VUPEN
Name: ADV-2010-3156
Type: Advisory
External Source: MISC
Name: http://www.microsoft.com/technet/security/advisory/2488013.mspx
External Source: MISC
Name: http://www.breakingpointsystems.com/community/blog/ie-vulnerability/
External Source: MISC
Name: http://blogs.technet.com/b/srd/archive/2011/01/07/assessing-the-risk-of-public-issues-currently-being-tracked-by-the-msrc.aspx
External Source: SECTRACK
Name: 1024922
External Source: VUPEN
Name: ADV-2011-0318
External Source: MISC
Name: http://www.wooyun.org/bugs/wooyun-2010-0885

References to Check Content

Identifier: oval:org.mitre.oval:def:12382
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:microsoft:ie:7
* cpe:/a:microsoft:ie:8

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
  • Resource Management Errors (CWE-399)