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CVE-2017-5637

nvd nist
Published: Oct 10, 2017Modified: May 13, 2026

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7.5
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

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.

Affected (14)

Apache
1 product
Zookeeper
Debian
1 product
Debian Linux
Configuration A
13 vulnerable
Vulnerable SoftwareAffected Versions
Apache
Zookeeper
Version 3.4.0
Zookeeper
Version 3.4.1
Zookeeper
Version 3.4.2
Zookeeper
Version 3.4.3
Zookeeper
Version 3.4.4
Zookeeper
Version 3.4.5
Zookeeper
Version 3.4.6
Zookeeper
Version 3.4.7
Zookeeper
Version 3.4.8
Zookeeper
Version 3.4.9
Zookeeper
Version 3.5.0
Zookeeper
Version 3.5.1
Zookeeper
Version 3.5.2
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 8.0

Related CWEs

CWE-306
Missing Authentication for Critical Function
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
CWE-400
Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

References (24)

Source: security@apache.org
Third Party Advisory
Source: security@apache.org
Third Party AdvisoryVDB Entry
Source: security@apache.org
Source: security@apache.org
Source: security@apache.org
Source: security@apache.org
Issue TrackingMitigationVendor Advisory
Source: security@apache.org
Source: security@apache.org
Source: security@apache.org
Source: security@apache.org
Source: security@apache.org
Source: security@apache.org
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingMitigationVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.