Cross-origin data access via unrestricted CORS policy
Published Mar 14, 2024 · Updated Aug 1, 2024
Permissive CORS handling in vantage6 4.2.2 and earlier allows remote attackers to read or modify API data through a malicious origin. Server initialization passes no origin restriction to Flask-CORS and explicitly gives Socket.IO a wildcard origin, causing browsers to accept cross-origin API access. Exploitation requires user interaction with an attacker-controlled origin, and the absence of session-cookie authentication limits exposed data and actions.
Summary
What happened
Permissive CORS handling in vantage6 4.2.2 and earlier allows remote attackers to read or modify API data through a malicious origin. Server initialization passes no origin restriction to Flask-CORS and explicitly gives Socket.IO a wildcard origin, causing browsers to accept cross-origin API access. Exploitation requires user interaction with an attacker-controlled origin, and the absence of session-cookie authentication limits exposed data and actions.
The record
- CVE
- CVE-2024-23823
- Published
- Mar 14, 2024
- Updated
- Aug 1, 2024
- Vendor
- vantage6
- Product
- vantage6
- Classifications
- CWE-942, CWE-863, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 14, 2024CVE publishedPublication date reported by the CVE source.
- Aug 1, 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=<= 4.2.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
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Technologies
Your stack
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Your stack
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