Unauthenticated data disclosure via substring host check
Published Apr 5, 2021 · Updated Aug 3, 2024
SSRF in LikeBtn Like Button Rating before 2.6.32 allows remote attackers to read responses from arbitrary server-reachable URLs. The unauthenticated likebtn_prx AJAX handler Base64-decodes likebtn_q, accepts any hostname containing “likebtn.com,” follows redirects with WP_Http::request, and echoes the response. No account is required; control of a matching subdomain or redirect permits reading resources reachable by the WordPress server, including localhost services.
Summary
What happened
SSRF in LikeBtn Like Button Rating before 2.6.32 allows remote attackers to read responses from arbitrary server-reachable URLs. The unauthenticated likebtn_prx AJAX handler Base64-decodes likebtn_q, accepts any hostname containing “likebtn.com,” follows redirects with WP_Http::request, and echoes the response. No account is required; control of a matching subdomain or redirect permits reading resources reachable by the WordPress server, including localhost services.
The record
- CVE
- CVE-2021-24150
- Published
- Apr 5, 2021
- Updated
- Aug 3, 2024
- Vendor
- LikeBtn
- Product
- Like Button Rating
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 5, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.6.32 <2.6.32
What conditions does exploitation require?
What is affected?
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 unauthenticated SSRF proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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