zookeeper: No authentication or authorization is enforced when a server joins a quorum
Published May 21, 2018
7.5
HIGHCVSS 3.1
EPSS 8.47%
Description
No authentication/authorization is enforced when a server attempts to join a quorum in Apache ZooKeeper before 3.4.10, and 3.5.0-alpha through 3.5.3-beta. As a result an arbitrary end point could join the cluster and begin propagating counterfeit changes to the leader.
Affected products
-
- Version Apache ZooKeeper prior to 3.4.10, Apache ZooKeeper 3.5.0-alpha through 3.5.3-betaStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache ZooKeeper | n/a |
|
Configuration 1
Configuration 2
- 8.0
- 9.0
Configuration 3
- < 19.1.0.0.1
No data.
Red Hat BPM Suite 6
zookeeper
Not affected
Red Hat Fuse 7
zookeeper
Not affected
Red Hat JBoss A-MQ 6
zookeeper
Will not fix
Red Hat JBoss BRMS 6
zookeeper
Not affected
Red Hat JBoss Data Virtualization 6
zookeeper
Not affected
Red Hat JBoss Fuse 6
zookeeper
Will not fix
Red Hat JBoss Fuse Integration Service 2
zookeeper
Not affected
Red Hat JBoss Fuse Service Works 6
zookeeper
Not affected
Red Hat OpenShift Application Runtimes
zookeeper
Not affected
streams for Apache Kafka
zookeeper
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat BPM Suite 6 | zookeeper | Not affected | n/a |
| Red Hat Fuse 7 | zookeeper | Not affected | n/a |
| Red Hat JBoss A-MQ 6 | zookeeper | Will not fix | n/a |
| Red Hat JBoss BRMS 6 | zookeeper | Not affected | n/a |
| Red Hat JBoss Data Virtualization 6 | zookeeper | Not affected | n/a |
| Red Hat JBoss Fuse 6 | zookeeper | Will not fix | n/a |
| Red Hat JBoss Fuse Integration Service 2 | zookeeper | Not affected | n/a |
| Red Hat JBoss Fuse Service Works 6 | zookeeper | Not affected | n/a |
| Red Hat OpenShift Application Runtimes | zookeeper | Not affected | n/a |
| streams for Apache Kafka | zookeeper | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Zookeeper is not designed to run as a publicly available service and it always needs to be deployed and operated in a secured environment. As a result it is assumed that no zookeeper ports are available publically, so with this assumption JBoss Fuse is not affected by this issue.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
AV:N/AC:L/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.47% (0.08469) | 94.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.72% (0.08724) | 94.45th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.13% (0.01130) | 77.69th | v4 (v2025.03.14) |
| Nov 18, 2025 | 5.00% (0.04997) | 88.65th | v4 (v2025.03.14) |
| Mar 30, 2025 | 0.72% (0.00716) | 70.06th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.76% (0.03761) | 79.83th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.72% (0.00716) | 70.70th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.28% (0.00282) | 69.43th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.81% (0.00806) | 81.77th | v3 (v2023.03.01) |
| Nov 21, 2023 | 0.81% (0.00806) | 79.75th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.75% (0.00750) | 78.81th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.24% (0.00240) | 61.33th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.25% (0.00249) | 61.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.03% (0.03032) | 83.64th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.03% (0.03032) | 64.44th | v2 (v2022.01.01) |
| Feb 3, 2022 | 7.65% (0.07646) | 84.07th | v5 (v2026.06.15) |
| Jul 21, 2021 | 7.65% (0.07646) | 0.00th | v1 |
| Jul 17, 2021 | 6.54% (0.06539) | 0.00th | v1 |
| Apr 14, 2021 | 5.41% (0.05407) | 0.00th | v1 |
References (28)
- http://openwall.com/lists/oss-security/2018/05/21/6
- http://www.securityfocus.com/bid/104253 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040948 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-8012 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1581542 Issue Tracking
- https://cwiki.apache.org/confluence/display/ZOOKEEPER/Server-Server+mutual+authentication
- https://github.com/advisories/GHSA-ccqf-c5hq-77mp Advisory
- https://issues.apache.org/jira/browse/ZOOKEEPER-1045
- https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272@%3Cissues.activemq.apache.org%3E
- https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3@%3Ccommits.nifi.apache.org%3E
- https://lists.apache.org/thread.html/c75147028c1c79bdebd4f8fa5db2b77da85de2b05ecc0d54d708b393%40%3Cdev.zookeeper.apache.org%3E x_refsource_MISC
- https://lists.apache.org/thread.html/c75147028c1c79bdebd4f8fa5db2b77da85de2b05ecc0d54d708b393@%3Cdev.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r73daf1fc5d85677d9a854707e1908d14e174b7bbb0c603709c0ab33f%40%3Coak-commits.jackrabbit.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r73daf1fc5d85677d9a854707e1908d14e174b7bbb0c603709c0ab33f@%3Coak-commits.jackrabbit.apache.org%3E
- https://lists.apache.org/thread.html/r8f0d920805af93033c488af89104e2d682662bacfb8406db865d5e14%40%3Cdev.jackrabbit.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r8f0d920805af93033c488af89104e2d682662bacfb8406db865d5e14@%3Cdev.jackrabbit.apache.org%3E
- https://lists.apache.org/thread.html/rc5bc4ddb0deabf8cfb69378cecee56fcdc76929bea9e6373cb863870%40%3Cdev.jackrabbit.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rc5bc4ddb0deabf8cfb69378cecee56fcdc76929bea9e6373cb863870@%3Cdev.jackrabbit.apache.org%3E
- https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b@%3Ccommits.nifi.apache.org%3E
- https://lists.apache.org/thread.html/re3a4048e9515d4afea416df907a612ed384a16c57cf99e97ee4a12f2%40%3Cdev.jackrabbit.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/re3a4048e9515d4afea416df907a612ed384a16c57cf99e97ee4a12f2@%3Cdev.jackrabbit.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2018-8012
- https://www.cve.org/CVERecord?id=CVE-2018-8012
- https://www.debian.org/security/2018/dsa-4214 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.oracle.com/security-alerts/cpujul2020.html x_refsource_MISCPatchThird Party Advisory
Change history (0)
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