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High severity · published Oct 10, 2017
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…
7.5
CVSS
73.1%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)73.1% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
ZO
Zookeeper · Apache
3.4.0; 3.4.1; 3.4.2; 3.4.3; 3.4.4; 3.4.5; +7 more · source: NVD
Affected product
ZO
Zookeeper
Apache
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-5637
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-5637
Third Party Advisory
http://www.debian.org/security/2017/dsa-3871
Third Party Advisory
http://www.securityfocus.com/bid/98814
access.redhat.com
https://access.redhat.com/errata/RHSA-2017:2477
access.redhat.com
https://access.redhat.com/errata/RHSA-2017:3354
access.redhat.com
https://access.redhat.com/errata/RHSA-2017:3355
Issue Tracking
https://issues.apache.org/jira/browse/ZOOKEEPER-2693
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