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Bug 621034 (CVE-2017-5637) - <sys-cluster/zookeeper-bin-3.4.10: DOS attack on wchp/wchc four letter words (CVE-2017-5637)
Summary: <sys-cluster/zookeeper-bin-3.4.10: DOS attack on wchp/wchc four letter words ...
Alias: CVE-2017-5637
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal trivial (vote)
Assignee: Gentoo Security
Whiteboard: ~3 [noglsa cve]
Depends on:
Reported: 2017-06-06 14:36 UTC by Volkan
Modified: 2017-07-16 01:44 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description Volkan 2017-06-06 14:36:57 UTC
Vulnerable versions {3.4.0, 3.5.1, 3.5.2} are not in tree.
Upstream states vulnerability is fixed in versions 3.4.10(in tree), 3.5.3, 3.6.0

Incorrect input validation with wchp/wchc four letter words.

Two four letter word commands “wchp/wchc” are CPU intensive and could cause spike of CPU utilization on ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests.

Upstream issue:

Comment 1 Thomas Deutschmann (RETIRED) gentoo-dev 2017-06-06 14:56:24 UTC
Package was never stabilized; Fixed version already in repository.

@ Maintainer(s): Please cleanup and drop =sys-cluster/zookeeper-bin-3.4.9!