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Missing Authentication for Critical Function Affecting zookeeper package, versions <3.4.9-3

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
68.53% (100th percentile)

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  • Snyk IDSNYK-ECHOLATEST-ZOOKEEPER-19946299
  • published19 Sept 2026
  • disclosed10 Oct 2017
Report a new vulnerability Found a mistake?

Introduced: 10 Oct 2017

CVE-2017-5637  (opens in a new tab)
CWE-306  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Echo:latest zookeeper to version 3.4.9-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream zookeeper package and not the zookeeper package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

References