Auth bypass in Apache Zookeeper
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…
Vulnerability class: Broken Authentication
EPSS: 0.737 (99.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Zookeeper — versions 3.4.0, 3.4.1, 3.4.2
- Apache Software Foundation Zookeeper — versions 3.4.0 to 3.4.9, 3.5.0 to 3.5.2
- Debian Debian_linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security@apache.org (x_refsource_REDHAT, vendor-advisory)
- security@apache.org (x_refsource_REDHAT, vendor-advisory)
- security@apache.org (x_refsource_REDHAT, vendor-advisory)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (x_refsource_MISC)
Frequently asked questions
- What is CVE-2017-5637?
- CVE-2017-5637 is a high-severity vulnerability in Apache Zookeeper, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2017-10-10.
- How severe is CVE-2017-5637?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-5637 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.