CVE-2017-5637

7.5 HIGH
Published: October 10, 2017 Modified: May 13, 2026
View on 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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.debian.org/security/2017/dsa-3871
Source: security@apache.org
Third Party Advisory
http://www.securityfocus.com/bid/98814
Source: security@apache.org
Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:2477
Source: security@apache.org
https://access.redhat.com/errata/RHSA-2017:3354
Source: security@apache.org
https://access.redhat.com/errata/RHSA-2017:3355
Source: security@apache.org
https://issues.apache.org/jira/browse/ZOOKEEPER-2693
Source: security@apache.org
Issue Tracking Mitigation Vendor Advisory
https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E
Source: security@apache.org
https://lists.apache.org/thread.html/58170aeb7a681d462b7fa31cae81110cbb749d2dc83c5736a0bb8370%40%3Cdev.zookeeper.apache.org%3E
Source: security@apache.org
https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.org%3E
Source: security@apache.org
https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E
Source: security@apache.org
https://www.oracle.com//security-alerts/cpujul2021.html
Source: security@apache.org
https://www.oracle.com/security-alerts/cpujul2020.html
Source: security@apache.org
http://www.debian.org/security/2017/dsa-3871
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.securityfocus.com/bid/98814
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:2477
Source: af854a3a-2127-422b-91ae-364da2661108
https://access.redhat.com/errata/RHSA-2017:3354
Source: af854a3a-2127-422b-91ae-364da2661108
https://access.redhat.com/errata/RHSA-2017:3355
Source: af854a3a-2127-422b-91ae-364da2661108
https://issues.apache.org/jira/browse/ZOOKEEPER-2693
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Mitigation Vendor Advisory
https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.apache.org/thread.html/58170aeb7a681d462b7fa31cae81110cbb749d2dc83c5736a0bb8370%40%3Cdev.zookeeper.apache.org%3E
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.org%3E
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.oracle.com//security-alerts/cpujul2021.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.oracle.com/security-alerts/cpujul2020.html
Source: af854a3a-2127-422b-91ae-364da2661108

24 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
73.7%
99th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-306 CWE-400

Affected Vendors

apache debian

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