CVE-2017-5637 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.debian.org/security/2017/dsa-3871 http://www.securityfocus.com/bid/98814 https://access.redhat.com/errata/RHSA-2017:2477 https://access.redhat.com/errata/RHSA-2017:3354 https://access.redhat.com/errata/RHSA-2017:3355 https://issues.apache.org/jira/browse/ZOOKEEPER-2693 https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272@3Cissues.activemq.apache.org3E https://lists.apache.org/thread.html/58170aeb7a681d462b7fa31cae81110cbb749d2dc83c5736a0bb8370@3Cdev.zookeeper.apache.org3E https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3@3Ccommits.nifi.apache.org3E https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b@3Ccommits.nifi.apache.org3E https://www.oracle.com/security-alerts/cpujul2020.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5