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Vulnerability DatabaseCVE-2021-40343
CVE-2021-40343:
Nagios XI vulnerability analysis and mitigation
Overview
An issue was discovered in Nagios XI 5.8.5. Insecure file permissions on the nagios_unbundler.py file allow the nagios user to elevate their privileges to the root user (Synacktiv, CVE Details).
Technical details
The vulnerability exists due to improper file permissions on the nagios_unbundler.py script. The script is executed as root via a passwordless sudo entry, but is owned by the nagios user, allowing privilege escalation from the nagios user to root (Nagios Changelog).
Impact
This vulnerability allows local privilege escalation from the nagios user account to root level access, giving an attacker full system control (CVE Details).
Mitigation and workarounds
This vulnerability was fixed in Nagios XI version 5.8.6 by correcting the file permissions on the nagios_unbundler.py script. Users should upgrade to version 5.8.6 or later to address this security issue (Nagios Changelog).
Additional resources
Source: This report was generated using AI
Related Nagios XI vulnerabilities:
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