CVE-2024-13993: nagios xi XSS — Fix

Description

Nagios XI versions prior to < 2024R1.1.2 are vulnerable to a reflected cross-site scripting (XSS) via the login page when accessed with older web browsers. Insufficient validation or escaping of user-supplied input reflected by the login page can allow an attacker to craft a malicious link that, when visited by a victim, executes arbitrary JavaScript in the victim’s browser within the Nagios XI origin. The issue is observable under legacy browser behaviors; modern browsers may mitigate some vectors.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
nagios	nagios_xi	< 2024
nagios	nagios_xi	All
nagios	nagios_xi	All
nagios	nagios_xi	All
nagios	nagios_xi	All

References

Advisories & Patches

https://www.nagios.com/products/security/#nagios-xi

Other References

https://www.nagios.com/changelog/nagios-xi/ https://www.vulncheck.com/advisories/nagios-xi-reflected-xss-via-login-page-on-older-browsers

Frequently Asked Questions

What is CVE-2024-13993? +

Nagios XI versions prior to < 2024R1.1.2 are vulnerable to a reflected cross-site scripting (XSS) via the login page when accessed with older web browsers. Insufficient validation or escaping of user-supplied input reflected by the login page can allow an attacker to craft a malicious link that, when visited by a victim, executes arbitrary JavaScript in the victim’s browser within the Nagios XI origin. The issue is observable under legacy browser behaviors; modern browsers may mitigate some vectors. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-13993? +

CVE-2024-13993 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-13993? +

CVE-2024-13993 affects products from nagios, specifically: nagios_xi. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-13993? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-13993