USN-4789-1: Apache ZooKeeper vulnerabilities

15 March 2021

Several security issues were fixed in Apache ZooKeeper.

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Releases

Packages

  • zookeeper - High-performance coordination service for distributed application

Details

It was discovered that Apache ZooKeeper incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service or
other unspecified impact. (CVE-2016-5017)

It was discovered that Apache ZooKeeper incorrectly implemented "wchp/wchc"
commands. An attacker could possibly use this issue to cause a denial of
service. (CVE-2017-5637)

It was discovered that Apache Zookeeper incorrectly handled clusters. An
attacker could possibly use this issue to obtain sensitive information.
This issue was only fixed in Ubuntu 16.04 ESM. (CVE-2018-8012)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04
Ubuntu 14.04

In general, a standard system update will make all the necessary changes.

References

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Further reading