Stored XSS and settings deletion via nonce-free AJAX
Published Apr 12, 2021 · Updated Aug 3, 2024
Cross-site request forgery in Facebook for WordPress 3.0.0 through 3.0.3 allows remote attackers to inject stored JavaScript via crafted requests. The saveFbeSettings and deleteFbeSettings AJAX handlers accept administrator-authorized requests without a nonce, while saveFbeSettings stores unfiltered setting values that render on the settings page. An authenticated administrator must be induced to submit the crafted request; stored code then runs in that administrator’s browser, or the plugin settings are erased.
Summary
What happened
Cross-site request forgery in Facebook for WordPress 3.0.0 through 3.0.3 allows remote attackers to inject stored JavaScript via crafted requests. The saveFbeSettings and deleteFbeSettings AJAX handlers accept administrator-authorized requests without a nonce, while saveFbeSettings stores unfiltered setting values that render on the settings page. An authenticated administrator must be induced to submit the crafted request; stored code then runs in that administrator’s browser, or the plugin settings are erased.
The record
- CVE
- CVE-2021-24218
- Published
- Apr 12, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-352, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 12, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- WPScan CSRF-to-XSS and settings-deletion proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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