CVE-2016-9566

Public Exploit

Description

base/logging.c in Nagios Core before 4.2.4 allows local users with access to an account in the nagios group to gain root privileges via a symlink attack on the log file. NOTE: this can be leveraged by remote attackers using CVE-2016-9565.

Category

7.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 19.43% Top 5%
Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory nagios.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://security.gentoo.org/glsa/201710-20 vendor advisory
https://www.exploit-db.com/exploits/40921/ exploit
http://www.securityfocus.com/bid/94919 third party advisory vdb entry
https://github.com/NagiosEnterprises/nagioscore/commit/c29557dec91eba2306f5fb11b8da4474ba63f8c4 patch issue tracking
http://rhn.redhat.com/errata/RHSA-2017-0258.html vendor advisory
https://security.gentoo.org/glsa/201612-51 vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0212.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0213.html vendor advisory
https://www.nagios.org/projects/nagios-core/history/4x/ vendor advisory
https://security.gentoo.org/glsa/201702-26 vendor advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00014.html mailing list
http://rhn.redhat.com/errata/RHSA-2017-0259.html vendor advisory
http://www.securitytracker.com/id/1037487 vdb entry
http://seclists.org/fulldisclosure/2016/Dec/58 third party advisory mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=1402869 issue tracking
https://legalhackers.com/advisories/Nagios-Exploit-Root-PrivEsc-CVE-2016-9566.html third party advisory exploit
http://rhn.redhat.com/errata/RHSA-2017-0214.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0211.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-9566?
CVE-2016-9566 has been scored as a high severity vulnerability.
How to fix CVE-2016-9566?
To fix CVE-2016-9566, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9566 being actively exploited in the wild?
It is possible that CVE-2016-9566 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~19% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.