CVE-2020-28909
HIGHCVSS 8.8/10EPSS 5.13%
Last modified
CVE-2020-28909 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Incorrect File Permissions in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to root via modification of scripts. Low-privileges users are able to modify files that can be executed by sudo.. EPSS estimates a 5.13% chance of exploitation in the next 30 days.
Description
Incorrect File Permissions in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to root via modification of scripts. Low-privileges users are able to modify files that can be executed by sudo.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nagios | Fusion | <= 4.1.8 |
References
- http://packetstormsecurity.com/files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cross-Site-Scripting-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you/Exploit, Third Party Advisory
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
- http://packetstormsecurity.com/files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cross-Site-Scripting-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you/Exploit, Third Party Advisory
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-28909?
Incorrect File Permissions in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to root via modification of scripts. Low-privileges users are able to modify files that can be executed by sudo.
How severe is CVE-2020-28909?
CVE-2020-28909 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 5.13% probability of exploitation in the next 30 days.
How do I fix CVE-2020-28909?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-28903Improper input validation in Nagios Fusion 4.1.8 and earlier…6.1
- CVE-2020-28904Execution with Unnecessary Privileges in Nagios Fusion 4.1.8…9.8
- CVE-2020-28905Improper Input Validation in Nagios Fusion 4.1.8 and earlier…8.8
- CVE-2020-28906Incorrect File Permissions in Nagios XI 5.7.5 and earlier an…8.8
- CVE-2020-28907Incorrect SSL certificate validation in Nagios Fusion 4.1.8 …9.8
- CVE-2020-28908Command Injection in Nagios Fusion 4.1.8 and earlier allows …9.8
- CVE-2020-2891Vulnerability in the Oracle Financial Services Liquidity Ris…7.1
- CVE-2020-28910Creation of a Temporary Directory with Insecure Permissions …9.8
- CVE-2020-28911Incorrect Access Control in Nagios Fusion 4.1.8 and earlier …6.5
- CVE-2020-28912With MariaDB running on Windows, when local clients connect …7
- CVE-2020-28914An improper file permissions vulnerability affects Kata Cont…7.1
- CVE-2020-28915A buffer over-read (at the framebuffer layer) in the fbcon c…5.8
Are you affected by CVE-2020-28909?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST