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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)

Reduce your security exposure

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.

Learn more about Ubuntu Pro

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