CVE-2017-5637

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.

Score

CVSS 3.0 7.5 High

Status

Modified - security@apache.org

Published

2017-10-10

Last modified

2024-09-17

Weaknesses

CWE-306, CWE-400

Affected products

• Zookeeper (Apache)
• Apache Zookeeper (Apache Software Foundation)
• Debian Linux (Debian)

References

• 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%40%3Cissues.activemq.apac…
• https://lists.apache.org/thread.html/58170aeb7a681d462b7fa31cae81110cbb749d2dc83c5736a0bb8370%40%3Cdev.zookeeper.apache…
• https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.…
• https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache…
• https://www.oracle.com//security-alerts/cpujul2021.html
• https://www.oracle.com/security-alerts/cpujul2020.html