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Nuclei Templates

XSS-Protection Header - Cross-Site Scripting

ID: xss-deprecated-header

Severity: info

Author: joshlarsen

Tags: xss,misconfig,generic

Description

Section titled “Description”

Setting the XSS-Protection header is deprecated. Setting the header to anything other than 0 can actually introduce an XSS vulnerability.

YAML Source

Section titled “YAML Source”
id: xss-deprecated-header


info:
  name: XSS-Protection Header - Cross-Site Scripting
  author: joshlarsen
  severity: info
  description: Setting the XSS-Protection header is deprecated. Setting the header to anything other than `0` can actually introduce an XSS vulnerability.
  reference:
    - https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-XSS-Protection
    - https://owasp.org/www-project-secure-headers/#x-xss-protection
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
    cvss-score: 0
  metadata:
    max-request: 1
  tags: xss,misconfig,generic


http:
  - method: GET
    path:
      - "{{BaseURL}}"


    matchers-condition: and
    matchers:
      - type: regex
        part: header
        regex:
          - "(?i)x-xss-protection: 0"
        negative: true


      - type: regex
        part: header
        regex:
          - "(?i)x-xss-protection: 1+"


    extractors:
      - type: kval
        part: header
        kval:
          - x_xss_protection
# digest: 490a004630440220530bb9267a1aa3b658dbeb9ffcb7e100a4ec8febe5c7a5af11d2c6abbeb38f22022070cb1ddbb2959925081896be62b28e5f354e6bd9df2c32dcc5e74687aaab79c8:922c64590222798bb761d5b6d8e72950

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/misconfiguration/xss-deprecated-header.yaml"

View on Github