Vulnerability identifier: #VU27087

Vulnerability risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-942

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Nagios XI
Server applications / Other server solutions

Vendor: nagios.org

Description

The vulnerability allows a remote attacker to bypass security restriction.

The vulnerability exists due to insecure CORS policy that allows a remote attacker to send HTTP requests from arbitrary domain name within the API. A remote non-authenticated attacker can bypass browser security restrictions and send requests to the API endpoints on behalf of the victim.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nagios XI: 5.6.0 - 5.6.13

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External links
http://www.nagios.com/downloads/nagios-xi/change-log/?5.6.14

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.