A Checkmk security update has been released for Ubuntu Linux 18.04 LTS.

USN-5527-1: Checkmk vulnerabilities

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Ubuntu Security Notice USN-5527-1
July 20, 2022

check-mk vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in Checkmk.

Software Description:
- check-mk: general purpose monitoring plugin for retrieving data

Details:

It was discovered that Checkmk incorrectly handled authentication. An attacker
could possibly use this issue to cause a race condition leading to information
disclosure. (CVE-2017-14955)

It was discovered that Checkmk incorrectly handled certain inputs. An attacker
could use these cross-site scripting issues to inject arbitrary html or
javascript code to obtain sensitive information including user information,
session cookies and valid credentials. (CVE-2017-9781, CVE-2021-36563,
CVE-2021-40906, CVE-2022-24565)

Update instructions:

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

Ubuntu 18.04 LTS:
check-mk-livestatus 1.2.8p16-1ubuntu0.2
check-mk-multisite 1.2.8p16-1ubuntu0.2
check-mk-server 1.2.8p16-1ubuntu0.2

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

References:
  https://ubuntu.com/security/notices/USN-5527-1
CVE-2017-14955, CVE-2017-9781, CVE-2021-36563, CVE-2021-40906,
CVE-2022-24565

Package Information:
  https://launchpad.net/ubuntu/+source/check-mk/1.2.8p16-1ubuntu0.2