Information disclosure in NGINX Controller



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-23021
CWE-ID CWE-276
Exploitation vector Local
Public exploit N/A
Vulnerable software
 NGINX Controller
Server applications / Web servers

Vendor F5 Networks

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Incorrect default permissions

EUVDB-ID: #VU53576

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 - Incorrect Default Permissions

Exploit availability: No

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

CPE2.3 External links

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


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.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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