CVE-2018-8736 — A privilege escalation vulnerability in Nagios XI 5

A privilege escalation vulnerability in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an attacker to leverage an RCE vulnerability escalating to root.

01What is this vulnerability?

A privilege escalation vulnerability in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an attacker to leverage an RCE vulnerability escalating to root.

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: 2018-04-18T00:00:00.000Z
• Last modified: 2024-08-05T07:02:26.073Z

09References

• gist.github.com — https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f
• www.exploit-db.com — https://www.exploit-db.com/exploits/44560/
• www.nagios.com — https://www.nagios.com/downloads/nagios-xi/change-log/
• blog.redactedsec.net — https://blog.redactedsec.net/exploits/2018/04/26/nagios.html
• assets.nagios.com — https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT
• www.exploit-db.com — https://www.exploit-db.com/exploits/44969/