Account compromise via unthrottled WebDAV Basic Authentication
Published Oct 13, 2023 · Updated Sep 17, 2024
Improper rate limiting in Nextcloud Server and Enterprise Server allows remote authenticated users to brute-force WebDAV passwords. The WebDAV request path failed to throw its TooManyRequests exception for HTTP Basic Authentication, so repeated credential guesses were not stopped with HTTP 429. Exploitation requires network access and low privileges; a successfully guessed password exposes data available to the compromised account without altering data or interrupting service.
Summary
What happened
Improper rate limiting in Nextcloud Server and Enterprise Server allows remote authenticated users to brute-force WebDAV passwords. The WebDAV request path failed to throw its TooManyRequests exception for HTTP Basic Authentication, so repeated credential guesses were not stopped with HTTP 429. Exploitation requires network access and low privileges; a successfully guessed password exposes data available to the compromised account without altering data or interrupting service.
The record
- CVE
- CVE-2023-39960
- Published
- Oct 13, 2023
- Updated
- Sep 17, 2024
- Vendor
- Nextcloud GmbH
- Product
- Security Advisories
- Classifications
- CWE-307, T1110
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 13, 2023CVE publishedPublication date reported by the CVE source.
- Sep 17, 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=>= 22.0.0, < 22.2.10.14
- Affected versionversion=>= 23.0.0, < 23.0.12.9
- Affected versionversion=>= 24.0.0, < 24.0.12.5
- Affected versionversion=>= 25.0.0, < 25.0.9
- Affected versionversion=>= 26.0.0, < 26.0.4
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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