Cross-site Scripting (XSS) Affecting check-mk package, versions <1.2.8p16-1ubuntu0.2


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.99% (60th percentile)

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  • Snyk IDSNYK-UBUNTU1804-CHECKMK-2767608
  • published20 Apr 2022
  • disclosed25 Mar 2022

Introduced: 25 Mar 2022

CVE-2021-40906  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 check-mk to version 1.2.8p16-1ubuntu0.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream check-mk package and not the check-mk package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

CheckMK Raw Edition software (versions 1.5.0 to 1.6.0) does not sanitise the input of a web service parameter that is in an unauthenticated zone. This Reflected XSS allows an attacker to open a backdoor on the device with HTML content and interpreted by the browser (such as JavaScript or other client-side scripts) or to steal the session cookies of a user who has previously authenticated via a man in the middle. Successful exploitation requires access to the web service resource without authentication.

CVSS Base Scores

version 3.1