VulnerabilityAnalyzed

CVE-2020-36856

Nagios XI versions prior to 5.6.14 contain an authenticated remote command execution vulnerability in the CCM command_test.php script.

CRITICAL 9.4EPSS 2.29%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Nagios XI versions prior to 5.6.14 contain an authenticated remote command execution vulnerability in the CCM command_test.php script. Insufficient validation of the `address` parameter allows an authenticated user with access to the Core Config Manager to inject shell metacharacters that are incorporated into backend command invocations. Successful exploitation enables arbitrary command execution with the privileges of the Nagios XI web application user and may be leveraged to execute commands on the underlying XI host, modify system configuration, or fully compromise the host.

CVSS 4.0: 9.4 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 2.29% probability · 82th percentile
CISA KEV: Not listed
Weakness: CWE-78
Affected: nagios/nagios xi
Source: disclosure@vulncheck.com

References

https://www.nagios.com/changelog/nagios-xi/Release Notes
https://www.nagios.com/products/security/#nagios-xiRelease Notes
https://www.vulncheck.com/advisories/nagios-xi-authenticated-rce-command-test-php-via-addressThird Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.