CVE-2018-18245 Cross-site scripting in n/a

Medium 5.4 Published Updated

Attackers can inject malicious scripts into Nagios Core alert reports, potentially executing code or hijacking user sessions.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2018-18245?

CVE-2018-18245 is a medium-severity cross-site scripting vulnerability in Debian Debian Linux, published on 17 Dec 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.

Weakness: CWE-79

Which versions are affected by CVE-2018-18245?

It affects 2 products.

Products include Debian Debian Linux, Nagios Nagios Core.

How do I fix CVE-2018-18245?

Upgrade to a fixed version.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2018-18245 being exploited?

There is no known exploitation of CVE-2018-18245 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-18245, GHSA-mmcj-m9g2-2r59, UBUNTU-CVE-2018-18245.

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