Vulnerability identifier: #VU53576

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23021

CWE-ID: CWE-276

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
NGINX Controller
Server applications / Web servers

Vendor: F5 Networks

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions for agent configuration file /etc/controller-agent/agent.conf. A local user with access to the system can obtain sensitive information, such as the API key.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NGINX Controller: 3.0.0 - 3.6.0

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External links
http://support.f5.com/csp/article/K36926027

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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.