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CVE-2013-0431 is a JMX-related security-sandbox bypass affecting the Java Runtime Environment in Oracle Java SE 7 through Update 11 and OpenJDK 7. Also known as Issue 52, it is distinct from CVE-2013-1490. An observed exploit used a malicious serialized object to bypass the Java security manager in Java 7 Update 11. The exploit was associated with avoiding the fireAppletSSVValidation security check, allowing malicious applet execution without warnings or additional user interaction. Exploitation enabled payload download, decryption, and execution outside the intended applet restrictions.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module: 'modules/exploits/multi/browser/java_jre17_jmxbean_2.rb'. The module exploits CVE-2013-0431, a remote code execution vulnerability in Oracle Java 7 (Update 10, 11, and possibly earlier 7.x versions) via the JMX classes in a Java applet. The exploit is delivered through a malicious HTTP server that serves a crafted HTML page and a JAR file containing the exploit payload. When a victim visits the attacker's web page with a vulnerable Java plugin enabled, arbitrary code can be executed on their system. The module supports multiple payloads, including Java and native payloads for Windows, Linux, and Mac OS X. The structure is typical for a Metasploit browser exploit: it includes HTTP server logic, payload generation, and dynamic HTML/JAR delivery. No hardcoded IPs or external domains are present; the main fingerprintable endpoints are the root path and dynamically generated JAR file paths served by the module.
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5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A specific vulnerability included in multiple exploit kits according to the table.
A Java security-check bypass exploited through a malicious serialized file. According to the article, serialized applets avoid calling fireAppletSSVValidation, allowing malicious applets to run without warnings or user interaction on Java 7 Update 11. Neutrino uses the vulnerability to deliver Urausy ransomware.
A medium-severity Java JRE security-sandbox bypass related to JMX, affecting Oracle Java SE 7 through Update 11 and OpenJDK 7. Successful exploitation requires user assistance and can allow a remote attacker to bypass Java sandbox restrictions.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.