Linux Security
Linux Security
Linux Security

Debian: DSA-3871-1: zookeeper security update

Date 01 Jun 2017
156
Posted By LinuxSecurity Advisories
It was discovered that Zookeeper, a service for maintaining configuration information, didn't restrict access to the computationally expensive wchp/wchc commands which could result in denial of service by elevated CPU consumption.
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Debian Security Advisory DSA-3871-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                       Moritz Muehlenhoff
June 01, 2017                         https://www.debian.org/security/faq
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Package        : zookeeper
CVE ID         : CVE-2017-5637

It was discovered that Zookeeper, a service for maintaining
configuration information, didn't restrict access to the computationally
expensive wchp/wchc commands which could result in denial of service by
elevated CPU consumption.

This update disables those two commands by default. The new
configuration option "4lw.commands.whitelist" can be used to whitelist
commands selectively (and the full set of commands can be restored
with '*')

For the stable distribution (jessie), this problem has been fixed in
version 3.4.5+dfsg-2+deb8u2.

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your zookeeper packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.

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