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CVE-2011-3544 is a remote code execution vulnerability in the Scripting component of Oracle Java SE JDK and JRE, commonly described as the Java Rhino Script Engine flaw. It affects Java 7 and Java 6 Update 27 and earlier. The vulnerability can be triggered through remote, untrusted Java Web Start applications or untrusted Java applets. Public reporting consistently associates exploitation with malicious applets that bypass Java sandbox restrictions, disable or null out the Java Security Manager, and then invoke attacker-controlled code to download and execute a native payload on the victim system. The issue was widely weaponized in exploit kits and watering-hole campaigns and was used for drive-by compromise on both Windows and macOS systems.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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_rhino.rb) that exploits CVE-2011-3544, a vulnerability in the Rhino Script Engine used by Java. The exploit targets browsers with Java enabled (IE, Firefox, Chrome, etc.) running Java version 7 or version 6 update 27 and earlier. The module sets up a malicious HTTP server that serves a crafted Java applet (Exploit.jar) containing Exploit.class. When a victim visits the server, the applet is executed, exploiting the vulnerability to run arbitrary code outside the Java sandbox. The module supports multiple platforms (Windows, Linux, OSX, Java) and allows for customizable payloads via Metasploit. The main attack vector is browser-based, requiring user interaction (visiting the malicious page). The structure is typical for a Metasploit exploit: it includes module metadata, target definitions, payload handling, and HTTP server logic to deliver the exploit.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An older Java vulnerability leveraged by Threat Group 3390 ("Emissary Panda") in watering-hole attacks to compromise victim networks.
A Java vulnerability used by the exploit kit to deliver malware payloads via malicious applets in drive-by attacks against vulnerable users.
A Java vulnerability commonly referred to as Java Rhino / Oracle Java Rhino that was widely integrated into multiple exploit kits, indicating broad criminal adoption and significance in exploit pack ecosystems.
A Java vulnerability referenced as one of the exploit options in the HiMan exploit kit, apparently used as an alternative path for older JRE 6 versions when CVE-2013-2465 crashes.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.