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TITLE:
Internet Explorer CSS Tag Parsing Code Execution Vulnerability

SECUNIA ADVISORY ID:
SA42091

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42091/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42091

RELEASE DATE:
2010-11-03

DISCUSS ADVISORY:
http://secunia.com/advisories/42091/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/42091/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=42091

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in Internet Explorer, which can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to insufficient memory being
allocated to store a certain combination of CSS (Cascading Style
Sheets) tags. This can be exploited to overwrite a byte in a virtual
table pointer and call into user-controlled data in memory via a
specially crafted web page.

Successful exploitation allows execution of arbitrary code.

NOTE: The vulnerability is currently being actively exploited.

SOLUTION:
Apply a custom CSS to override website CSS styles (please see the
Microsoft advisory for details).

PROVIDED AND/OR DISCOVERED BY:
Reported as a 0-day.

ORIGINAL ADVISORY:
Microsoft:
http://www.microsoft.com/technet/security/advisory/2458511.mspx
http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspx
http://blogs.technet.com/b/srd/archive/2010/11/03/dep-emet-protect-against-attacks-on-the-latest-internet-explorer-vulnerability.aspx

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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private users keeping their systems up to date against the latest
vulnerabilities.

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