Unauthorized private-field writes via unsanitized registration
Published Nov 6, 2023 · Updated Sep 4, 2024
Improper authentication in Strapi 4.0.0 through 4.13.0 allows remote attackers to write private fields through the registration API. The users-permissions register controller passed custom user-model fields from the request body into account creation without excluding attributes marked private. Self-registration must be enabled and the user model must contain a security-relevant custom private field; exploitation creates an account with attacker-chosen private data.
Summary
What happened
Improper authentication in Strapi 4.0.0 through 4.13.0 allows remote attackers to write private fields through the registration API. The users-permissions register controller passed custom user-model fields from the request body into account creation without excluding attributes marked private. Self-registration must be enabled and the user model must contain a security-relevant custom private field; exploitation creates an account with attacker-chosen private data.
The record
- CVE
- CVE-2023-39345
- Published
- Nov 6, 2023
- Updated
- Sep 4, 2024
- Vendor
- Strapi
- Product
- Strapi
- Classifications
- CWE-287
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 6, 2023CVE publishedPublication date reported by the CVE source.
- Sep 4, 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=>= 4.0.0, < 4.13.1
- Affected versionversion=4.0.0 <4.13.1
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
- GHSA registration-request reproductionproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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