Account takeover via unthrottled login attempts
Published Feb 10, 2023 · Updated Mar 24, 2025
Authentication bypass in Modoboa before 2.0.4 allows remote attackers to take over accounts by brute-forcing the login API. The /api/v2/token/ endpoint accepts repeated username and password guesses without rate limiting; the fix adds per-IP login throttling. Exploitation requires a known account name and a guessable password, and successful guesses grant that account's privileges.
Summary
What happened
Authentication bypass in Modoboa before 2.0.4 allows remote attackers to take over accounts by brute-forcing the login API. The /api/v2/token/ endpoint accepts repeated username and password guesses without rate limiting; the fix adds per-IP login throttling. Exploitation requires a known account name and a guessable password, and successful guesses grant that account's privileges.
The record
- CVE
- CVE-2023-0777
- Published
- Feb 10, 2023
- Updated
- Mar 24, 2025
- Vendor
- Modoboa
- Product
- Modoboa
- Classifications
- CWE-305, T1110
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 10, 2023CVE publishedPublication date reported by the CVE source.
- Mar 24, 2025Record 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=unspecified <2.0.4
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.
Public exploit references
- modoboa 2.0.4 - Admin TakeOverfunctional · demonstrated
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Technologies
Your stack
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Your stack
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