CVE-2018-18245 — Nagios Core 4

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-12-17T15:00:00.000Z
• Last modified: 2024-08-05T11:01:14.898Z

09References

• lists.debian.org — https://lists.debian.org/debian-lts-announce/2018/12/msg00014.html
• herolab.usd.de — https://herolab.usd.de/wp-content/uploads/sites/4/2018/12/usd20180026.txt
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00014.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00022.html