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TITLE:
Microsoft Windows win32k.sys Driver Keyboard Layout Denial of Service

SECUNIA ADVISORY ID:
SA46919

VERIFY ADVISORY:
Secunia.com
https://secunia.com/advisories/46919/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46919

RELEASE DATE:
2011-11-22

DISCUSS ADVISORY:
https://secunia.com/advisories/46919/#comments

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

https://secunia.com/advisories/46919/

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=46919

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

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

DESCRIPTION:
A vulnerability has been discovered in Microsoft Windows, which can
be exploited by malicious, local users to cause a DoS (Denial of
Service).

The vulnerability is caused due to an indexing error in the
win32k.sys driver when loading a keyboard layout file. This can be
exploited to access an invalid memory location resulting in a system
crash.

The vulnerability is confirmed on a fully patched Windows XP SP3
(win32k.sys version 5.1.2600.6149). Other versions may also be
affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
instruder

ORIGINAL ADVISORY:
https://www.exploit-db.com/exploits/18140

OTHER REFERENCES:
Further details available in Customer Area:
https://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
https://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
https://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
https://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
https://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
https://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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