VUPEN Security Research - Oracle Java Applet Preloader Click-2-Play Warning Bypass Vulnerability Website : http://www.vupen.com Twitter : http://twitter.com/vupen I. BACKGROUND --------------------- "Java is the foundation for virtually every type of networked application and is the global standard for developing and delivering mobile applications, games, Web-based content, and enterprise software." (Oracle) II. DESCRIPTION --------------------- VUPEN Vulnerability Research Team discovered a critical vulnerability in Oracle Java. The vulnerability is caused by a design error in the Java click-2-play security warning when the preloader is used, which can be exploited by remote attackers to load a malicious applet (e.g. taking advantage of a Java memory corruption vulnerability) without any user interaction III. AFFECTED PRODUCTS --------------------------- Oracle Java version 7u21 and prior IV. Binary Analysis & Exploits/PoCs --------------------------------------- In-depth technical analysis of the vulnerability and a private exploit will be available through the VUPEN BAE (Binary Analysis & Exploits) portal: http://www.vupen.com/english/services/ba-index.php VUPEN Binary Analysis & Exploits Service provides private exploits and in-depth technical analysis of the most significant public vulnerabilities based on disassembly, reverse engineering, protocol analysis, and code audit. The service allows governments and major corporations to evaluate risks, and protect infrastructures and assets against new threats. The service also allows security vendors (IPS, IDS, AntiVirus) to supplement their internal research efforts and quickly develop both vulnerability-based and exploit-based signatures to proactively protect their customers from attacks and emerging threats. V. VUPEN Threat Protection Program ----------------------------------- Governments and major corporations which are members of the VUPEN Threat Protection Program (TPP) have been proactively alerted about the vulnerability when it was discovered by VUPEN in advance of its public disclosure, and have received a detailed attack detection guidance to protect national and critical infrastructures against potential 0-day attacks exploiting this vulnerability: http://www.vupen.com/english/services/tpp-index.php VI. SOLUTION ---------------- Upgrade to Java 7u25 or later. VII. CREDIT -------------- This vulnerability was discovered by Florent H. of VUPEN Security VIII. ABOUT VUPEN Security --------------------------- VUPEN is the leading provider of defensive and offensive cybersecurity intelligence and advanced vulnerability research. VUPEN solutions enable corporations and governments to manage risks, and protect critical networks and infrastructures against known and unknown vulnerabilities. VUPEN solutions include: * VUPEN Binary Analysis & Exploits Service (BAE) : http://www.vupen.com/english/services/ba-index.php * VUPEN Threat Protection Program (TPP) : http://www.vupen.com/english/services/tpp-index.php IX. REFERENCES ---------------------- http://www.oracle.com/technetwork/topics/security/javacpujun2013-1899847.html http://www.vupen.com/english/research.php X. DISCLOSURE TIMELINE ----------------------------- ****-**-** - Vulnerability Discovered by VUPEN 2013-06-18 - Vulnerability Fixed in Java 7u25 2013-07-08 - Public disclosure