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CVE-2021-40906

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5527-1
Posted Jul 20, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5527-1 - It was discovered that Checkmk incorrectly handled authentication. An attacker could possibly use this issue to cause a race condition leading to information disclosure. 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.

tags | advisory, arbitrary, javascript, xss, info disclosure
systems | linux, ubuntu
advisories | CVE-2017-14955, CVE-2021-40906, CVE-2022-24565
SHA-256 | 45daf753e998edd792b4728e6f35f35c6493b1e6cc974ee1082da7f33c59b2dc
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