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CVE-2011-3556 is an unspecified vulnerability in the Java Runtime Environment component of Oracle Java SE JDK and JRE, related to Remote Method Invocation (RMI). Affected releases include Java SE 7; Java 6 Update 27 and earlier; Java 5.0 Update 31 and earlier; Java 1.4.2_33 and earlier; and JRockit R28.1.4 and earlier. The available information does not identify the vulnerable function, root cause, or precise attack vector. This issue is distinct from CVE-2011-3557.
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2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit module: 'java_rmi_server.rb', which exploits the insecure default configuration of Java RMI Registry and Activation services (CVE-2011-3556). The exploit abuses the RMI protocol's ability to load classes from arbitrary remote HTTP URLs, allowing an attacker to achieve remote code execution on vulnerable Java RMI endpoints. The module supports multiple payload types, including Java (cross-platform) and native payloads for Windows, Linux, and Mac OS X. The exploit works by sending a specially crafted RMI call that causes the target to fetch and execute a malicious JAR file from an attacker-controlled HTTP server. The default RMI port is 1099, but the module allows customization. The code is written in Ruby and is part of the Metasploit Framework, making it weaponized and highly customizable. The module is operational against any RMI endpoint that allows remote class loading, except for JMX ports unless another RMI endpoint is active in the same process.
This repository is a Python 3 proof-of-concept exploit for CVE-2011-3556, a vulnerability in Oracle Java RMI that allows remote code execution via remote class loading. The exploit consists of two main code files: 'exploit.py', which serves as the command-line interface and entry point, and 'lib/cve_2011_3556.py', which implements the exploit logic. The exploit works by connecting to a vulnerable Java RMI server (default port 1099) and sending specially crafted RMI packets that instruct the server to load a Java class from a remote HTTP URL (the attacker's payload JAR). The attacker must host the payload JAR on an HTTP server accessible to the target. The exploit does not generate the payload itself but triggers the loading and execution of the remote class, enabling arbitrary code execution on the target. The repository is structured for both command-line and library use, and is a direct Python reimplementation of a known Metasploit module. No fake or destructive code is present; the exploit is a functional PoC for the specified vulnerability.
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