Access control bypass in Apache ZooKeeper
An issue is present in Apache ZooKeeper 1.0.0 to 3.4.13 and 3.5.0-alpha to 3.5.4-beta. ZooKeeper?s getACL() command doesn?t check any permission when retrieves the ACLs of the requested node and returns all information contained in the ACL Id field as plaintext string. DigestAuthenticationProvider overloads the Id field with the hash value that is used for user authentication. As a consequence, if Digest Authentication is in use, the unsalted hash value will be disclosed by getACL() request for unauthenticated or unprivileged users.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.zookeeper:zookeeper | >= 1.0.0, < 3.4.14, >= 3.5.0, < 3.5.5 | 3.4.14, 3.5.5 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-0201
- https://zookeeper.apache.org/security.html#CVE-2019-0201
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.debian.org/security/2019/dsa-4461
- https://security.netapp.com/advisory/ntap-20190619-0001
- https://seclists.org/bugtraq/2019/Jun/13
- https://lists.debian.org/debian-lts-announce/2019/05/msg00033.html
- https://lists.apache.org/thread.html/r40f32125c1d97ad82404cc918171d9e0fcf78e534256674e9da1eb4b@%3Ccommon-issues.hadoop.apache.org%3E
- https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc@%3Cissues.drill.apache.org%3E
- https://lists.apache.org/thread.html/f6112882e30a31992a79e0a8c31ac179e9d0de7c708de3a9258d4391@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442@%3Cdev.drill.apache.org%3E
- https://lists.apache.org/thread.html/5d9a1cf41a5880557bf680b7321b4ab9a4d206c601ffb15fef6f196a@%3Ccommits.accumulo.apache.org%3E
- https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f@%3Cdev.drill.apache.org%3E
- https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272@%3Cissues.activemq.apache.org%3E
- https://issues.apache.org/jira/browse/ZOOKEEPER-1392
- https://access.redhat.com/errata/RHSA-2019:4352
- https://access.redhat.com/errata/RHSA-2019:3892
- https://access.redhat.com/errata/RHSA-2019:3140
- http://www.securityfocus.com/bid/108427
- CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-862- Platform
- Java / Kotlin (Maven)
- Package
org.apache.zookeeper:zookeeper- Disclosed
- 29.05.2019
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-2hw2-62cp-p9p7 - CC BY 4.0
Vulnerability history: org.apache.zookeeper:zookeeper
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 9
- First → latest
- 05.2019 03.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 5
- Medium 3
Disclosures per year
- 2019: 1
- 2020: 0
- 2021: 0
- 2022: 2
- 2023: 1
- 2024: 2
- 2025: 1
- 2026: 2
-
Access control bypass in Apache ZooKeeper this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.