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"From 2007 to 2009 vulnerabilities in a typical end-user PC almost doubled from about 220 to 420."

Non-Microsoft software to blame for increase in vulnerabilities affecting typical Windows end-users, read more:

http://secunia.com/gfx/pdf/Secunia_Half_Year_Report_2010.pdf


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TITLE:
Qt "QTextEngine::LayoutData::reallocate()" Vulnerability

SECUNIA ADVISORY ID:
SA40588

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40588/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40588

RELEASE DATE:
2010-07-23

DISCUSS ADVISORY:
http://secunia.com/advisories/40588/#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/40588/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
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https://ca.secunia.com/?page=viewadvisory&vuln_id=40588

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 discovered in Qt, which can be exploited by
malicious people to potentially compromise an application using the
library.

The vulnerability is caused due to the
"QTextEngine::LayoutData::reallocate()" function in
src/gui/text/qtextengine.cpp not properly checking the return value
of a memory reallocation, which can be exploited to cause a memory
corruption by e.g. visiting a specially crafted website in an
application the QtWebKit component.

Note: Successful exploitation may require that Qt has been compiled
with the QT_NO_EXCEPTIONS (-no-exceptions) setting.

SOLUTION:
Do not browse untrusted websites.

PROVIDED AND/OR DISCOVERED BY:
Originally reported as a Denial of Service in Arora by D4rk357.

Additional information provided by Secunia Research.

ORIGINAL ADVISORY:
http://packetstormsecurity.org/1007-exploits/arora-dos.txt

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:
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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