Apache ZooKeeperGHSA-7cwj-j333-x7f7
Uncontrolled Resource Consumption in Apache ZooKeeper
High7.5CVE-2017-5637 · Published May 13, 2022 · updated Nov 8, 2023
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| org.apache.zookeeper:zookeeper Maven | >= 3.4.0, < 3.4.10 | 3.4.10 |
| >= 3.5.0, < 3.5.3 | 3.5.3 |
Details and references
- CVSS 3.0
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-400
- Also known as
- CVE-2017-5637
- nvd.nist.gov/vuln/detail/CVE-2017-5637
- access.redhat.com/errata/RHSA-2017:2477
- access.redhat.com/errata/RHSA-2017:3354
- access.redhat.com/errata/RHSA-2017:3355
- issues.apache.org/jira/browse/ZOOKEEPER-2693
- lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272@%3Cissues.activemq.apache.org%3E
- lists.apache.org/thread.html/58170aeb7a681d462b7fa31cae81110cbb749d2dc83c5736a0bb8370@%3Cdev.zookeeper.apache.org%3E
- lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3@%3Ccommits.nifi.apache.org%3E
- lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b@%3Ccommits.nifi.apache.org%3E
- www.oracle.com//security-alerts/cpujul2021.html
- www.oracle.com/security-alerts/cpujul2020.html
- www.debian.org/security/2017/dsa-3871
- www.securityfocus.com/bid/98814
More Apache ZooKeeper advisories
All Apache ZooKeeper| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 242025 | Apache ZooKeeper: Insufficient Permission Check in AdminServer Snapshot/Restore Commands Medium4.3Sep 24, 2025 | Medium4.3 | 3.9.4 |
| Nov 72024 | Apache ZooKeeper: Authentication bypass with IP-based authentication in Admin ServerHighNov 7, 2024 | High | 3.9.3 |
| Mar 152024 | Apache ZooKeeper vulnerable to information disclosure in persistent watchers handlingMedium5.3Mar 15, 2024 | Medium5.3 | 3.8.4+1 more |
| Oct 112023 | Authorization Bypass Through User-Controlled Key vulnerability in Apache ZooKeeperCritical9.1Oct 11, 2023 | Critical9.1 | 3.7.2+2 more |
| May 132022 | Missing Authorization in Apache ZooKeeperHigh7.5May 13, 2022 | High7.5 | 3.4.10+1 more |
| May 292019 | Access control bypass in Apache ZooKeeperMedium5.9May 29, 2019 | Medium5.9 | 3.4.14+1 more |