CVE-2016-9566

Published: Dec 15, 2016Modified: May 6, 2026

7.8

Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: NVD

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.

Affected (1)

Products: Nagios: Nagios

Nagios

1 product

Nagios

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Nagios Nagios	Up to 4.2.3

Related CWEs

CWE-264

CWE-59

Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

References (36)

http://rhn.redhat.com/errata/RHSA-2017-0211.html

Source: cve@mitre.org

http://rhn.redhat.com/errata/RHSA-2017-0212.html

Source: cve@mitre.org

http://rhn.redhat.com/errata/RHSA-2017-0213.html

Source: cve@mitre.org

http://rhn.redhat.com/errata/RHSA-2017-0214.html

Source: cve@mitre.org

http://rhn.redhat.com/errata/RHSA-2017-0258.html

Source: cve@mitre.org

http://rhn.redhat.com/errata/RHSA-2017-0259.html

Source: cve@mitre.org

http://seclists.org/fulldisclosure/2016/Dec/58

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://www.securityfocus.com/bid/94919

Source: cve@mitre.org

Third Party AdvisoryVDB Entry

http://www.securitytracker.com/id/1037487

Source: cve@mitre.org

https://bugzilla.redhat.com/show_bug.cgi?id=1402869

Source: cve@mitre.org

Issue Tracking

https://github.com/NagiosEnterprises/nagioscore/commit/c29557dec91eba2306f5fb11b8da4474ba63f8c4

Source: cve@mitre.org

Issue TrackingPatch

https://legalhackers.com/advisories/Nagios-Exploit-Root-PrivEsc-CVE-2016-9566.html

Source: cve@mitre.org

ExploitThird Party Advisory

https://lists.debian.org/debian-lts-announce/2018/12/msg00014.html

Source: cve@mitre.org

https://security.gentoo.org/glsa/201612-51

Source: cve@mitre.org

https://security.gentoo.org/glsa/201702-26

Source: cve@mitre.org

https://security.gentoo.org/glsa/201710-20

Source: cve@mitre.org

https://www.exploit-db.com/exploits/40921/

Source: cve@mitre.org

https://www.nagios.org/projects/nagios-core/history/4x/

Source: cve@mitre.org

Vendor Advisory

http://rhn.redhat.com/errata/RHSA-2017-0211.html