CVE-2016-9566

Nagios vulnerability

CVSS

7.8

EPSS

4.9%

EPSS pct

91th

Exploited

No known

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 vendor

Nagios

Affected product

Nagios

CVSS vector

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

Weakness type (CWE)

CWE-59 — Link Following
CWE-264 — Permissions, Privileges, and Access Controls

Published

2016-12-15

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 4.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2016-9566

Confirm whether Nagios Nagios is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2016-9566.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-9566

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