module
Spring Framework Class property RCE (Spring4Shell)
| Disclosed | Created |
|---|---|
| 03/31/2022 | 05/10/2022 |
Disclosed
03/31/2022
Created
05/10/2022
Description
Spring Framework versions 5.3.0 to 5.3.17, 5.2.0 to 5.2.19, and older versions when running on JDK 9 or above
and specifically packaged as a traditional WAR and deployed in a standalone Tomcat instance are vulnerable
to remote code execution due to an unsafe data binding used to populate an object from request parameters
to set a Tomcat specific ClassLoader. By crafting a request to the application and referencing the
org.apache.catalina.valves.AccessLogValve class through the classLoader with parameters such as the following:
class.module.classLoader.resources.context.parent.pipeline.first.suffix=.jsp, an unauthenticated attacker can
gain remote code execution.
and specifically packaged as a traditional WAR and deployed in a standalone Tomcat instance are vulnerable
to remote code execution due to an unsafe data binding used to populate an object from request parameters
to set a Tomcat specific ClassLoader. By crafting a request to the application and referencing the
org.apache.catalina.valves.AccessLogValve class through the classLoader with parameters such as the following:
class.module.classLoader.resources.context.parent.pipeline.first.suffix=.jsp, an unauthenticated attacker can
gain remote code execution.
Author
vleminator
Platform
Linux,Windows
References
Module Options
To display the available options, load the module within the Metasploit console and run the commands ‘show options’ or ‘show advanced’:
msf > use exploit/multi/http/spring_framework_rce_spring4shell
msf /(l) > show actions
...actions...
msf /(l) > set ACTION < action-name >
msf /(l) > show options
...show and set options...
msf /(l) > run
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