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Message-ID: <7953F37E174143008E390DB32CF53A91@PC> Date: Fri, 11 Mar 2011 18:57:56 +0100 From: "VUPEN Security Research" <advisories@...en.com> To: <bugtraq@...urityfocus.com> Subject: VUPEN Security Research - Apple Safari WebKit Scroll Event Handling Remote Use-after-free VUPEN Security Research - Apple Safari WebKit Scroll Event Handling Remote Use-after-free http://www.vupen.com/english/research.php I. BACKGROUND --------------------- "Apple Safari is a web browser developed by Apple. As of February 2010, Safari was the fourth most widely used browser, with 4.45% of the worldwide usage share of web browsers according to Net Application." II. DESCRIPTION --------------------- VUPEN Vulnerability Research Team discovered a critical vulnerability in Apple Safari. The vulnerability is caused by a use-after-free error in the WebKit library when handling certain scroll events, which could be exploited by remote attackers to compromise a vulnerable system by tricking a user into visiting a specially crafted web page. CVSS Score: 10 (AV:N/AC:L/Au:N/C:C/I:C/A:C) III. AFFECTED PRODUCTS --------------------------- Apple Safari version 5.0.3 and prior IV. Binary Analysis & Exploits/PoCs --------------------------------------- In-depth binary analysis of the vulnerability and a code execution exploit are available through the VUPEN Binary Analysis & Exploits Service : http://www.vupen.com/english/services/ba-index.php V. VUPEN Threat Protection Program ----------------------------------- To proactively protect critical networks and infrastructures against unpatched vulnerabilities and reduce risks related to zero-day attacks, VUPEN shares its vulnerability research with governments and organizations members of the VUPEN Threat Protection Program (TPP). VUPEN TPP customers receive fully detailed and technical reports about security vulnerabilities discovered by VUPEN and in advance of their public disclosure. http://www.vupen.com/english/services/tpp-index.php VI. SOLUTION ---------------- Upgrade to Apple Safari version 5.0.4. VII. CREDIT -------------- This vulnerability was discovered by Matthieu Bonetti of VUPEN Security VIII. ABOUT VUPEN Security --------------------------- VUPEN is a leading IT security research company providing vulnerability management and security intelligence solutions which enable enterprises and institutions to eliminate vulnerabilities before they can be exploited, ensure security policy compliance and meaningfully measure and manage risks. Governmental and federal agencies, and global enterprises in the financial services, insurance, manufacturing and technology industries rely on VUPEN to improve their security, prioritize resources, cut time and costs, and stay ahead of the latest threats. * VUPEN Vulnerability Notification Service (VNS) : http://www.vupen.com/english/services/vns-index.php * VUPEN Binary Analysis & Exploits Service (BAE) : http://www.vupen.com/english/services/ba-index.php * VUPEN Threat Protection Program for Govs (TPP) : http://www.vupen.com/english/services/tpp-index.php * VUPEN Web Application Security Scanner (WASS) : http://www.vupen.com/english/services/wass-index.php IX. REFERENCES ---------------------- http://www.vupen.com/english/research-vuln.php http://www.vupen.com/english/advisories/2011/0641 http://support.apple.com/kb/HT4566 X. DISCLOSURE TIMELINE ----------------------------- 2010-11-17 - Vulnerability Discovered by VUPEN 2010-11-20 - VUPEN TPP customers informed 2011-03-09 - Apple Safari version 5.0.4 released
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