Child znode path disclosure via unchecked watch events
Published Mar 15, 2024 · Updated Jul 3, 2025
Missing authorization in Apache ZooKeeper allows local users with parent access to disclose child znode paths through persistent watch events. When DataTree triggers a persistent watch event, NIO and Netty server connections deliver the event without checking read permission on the event path. Exploitation requires access to the watched parent; it reveals full child paths, which can contain usernames or login IDs, but not znode data.
Summary
What happened
Missing authorization in Apache ZooKeeper allows local users with parent access to disclose child znode paths through persistent watch events. When DataTree triggers a persistent watch event, NIO and Netty server connections deliver the event without checking read permission on the event path. Exploitation requires access to the watched parent; it reveals full child paths, which can contain usernames or login IDs, but not znode data.
The record
- CVE
- CVE-2024-23944
- Published
- Mar 15, 2024
- Updated
- Jul 3, 2025
- Vendor
- The Apache Software Foundation
- Product
- Apache ZooKeeper
- Classifications
- CWE-862
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 15, 2024CVE publishedPublication date reported by the CVE source.
- Jul 3, 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?
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- Affected versionversion=3.6.0 <=3.7.2
- Affected versionversion=3.8.0 <=3.8.3
- Affected versionversion=3.9.0 <=3.9.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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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