Vulnerability identifier: #VU49679

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5796

CWE-ID: N/A

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Nagios XI
Server applications / Other server solutions

Vendor: nagios.org

Description

A local user can escalate privileges on the system.

The vulnerability exists due to improper preservation of permissions in Nagios XI. A local user can weaken the permissions of files, resulting in low-privileged users being able to write to and execute arbitrary PHP code with root privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nagios XI: 5.7.4

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External links
http://www.tenable.com/security/research/tra-2020-61

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.