Two four letter word commands "wchp/wchc" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests. Apache ZooKeeper thru version 3.4.9 and 3.5.2 suffer from this issue, fixed in 3.4.10, 3.5.3, and later.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-986-1 zookeeper security update
Debian DSA Debian DSA DSA-3871-1 zookeeper security update
Github GHSA Github GHSA GHSA-7cwj-j333-x7f7 Uncontrolled Resource Consumption in Apache ZooKeeper
Ubuntu USN Ubuntu USN USN-4789-1 Apache ZooKeeper vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2024-09-17T00:16:26.240Z

Reserved: 2017-01-29T00:00:00

Link: CVE-2017-5637

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2017-10-10T01:30:22.360

Modified: 2025-04-20T01:37:25.860

Link: CVE-2017-5637

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-02-07T00:00:00Z

Links: CVE-2017-5637 - Bugzilla

cve-icon OpenCVE Enrichment

No data.