Authentication bypass via swallowed JAAS configuration errors
Published Feb 10, 2023 · Updated Mar 10, 2025
Authentication bypass in DataHub before 0.8.45 allows remote attackers to log in as any user with any password when JAAS is misconfigured. The authenticateJaasUser method converts only LoginException into authentication failure, while its catch-all block swallows other exceptions such as configuration-driven IOException and lets login continue. Exposure requires JAAS authentication with an erroneous configuration; successful access assumes the chosen user's privileges and does not itself interrupt service.
Summary
What happened
Authentication bypass in DataHub before 0.8.45 allows remote attackers to log in as any user with any password when JAAS is misconfigured. The authenticateJaasUser method converts only LoginException into authentication failure, while its catch-all block swallows other exceptions such as configuration-driven IOException and lets login continue. Exposure requires JAAS authentication with an erroneous configuration; successful access assumes the chosen user's privileges and does not itself interrupt service.
The record
- CVE
- CVE-2023-25561
- Published
- Feb 10, 2023
- Updated
- Mar 10, 2025
- Vendor
- DataHub
- Product
- DataHub
- Classifications
- CWE-755, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 10, 2023CVE publishedPublication date reported by the CVE source.
- Mar 10, 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=< 0.8.45
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
- Malformed JAAS configuration proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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