Medium severity · published May 24, 2021
CVE-2020-28903
Improper input validation in Nagios Fusion 4.1.8 and earlier allows a remote attacker with control over a fused server to inject arbitrary HTML, aka XSS
6.1
CVSS
13.2%
EPSS
No
On KEV
Description
Improper input validation in Nagios Fusion 4.1.8 and earlier allows a remote attacker with control over a fused server to inject arbitrary HTML, aka XSS.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)13.2% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FU
Fusion · Nagios
through 4.1.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-28903
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-28903
Third Party Advisory
http://packetstormsecurity.com/files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cross-Site-Scripting-Code-Execution.html
Exploit
https://skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you/
Release Notes
https://www.nagios.com/downloads/nagios-xi/change-log/
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