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Nginx Controller CVE-2021-23021

MEDIUM
Incorrect Permission Assignment for Critical Resource (CWE-732)
2021-06-01 f5sirt@f5.com
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

1
CVE Published
Jun 01, 2021 - 13:15 nvd
MEDIUM 5.5

DescriptionNVD

The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf is world readable with current permission bits set to 644.

AnalysisAI

The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf is world readable with current permission bits set to 644. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Incorrect Permission Assignment (CWE-732), which allows attackers to access resources due to misconfigured permissions. The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf is world readable with current permission bits set to 644. Affected products include: F5 Nginx Controller. Version information: before 3.7.0.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Review and restrict file/resource permissions, apply principle of least privilege.

CVE-2020-27730 CRITICAL
9.8 Dec 11

In versions 3.0.0-3.9.0, 2.0.0-2.9.0, and 1.0.1, the NGINX Controller Agent does not use absolute paths when calling sys

CVE-2020-5901 CRITICAL
9.6 Jul 01

In NGINX Controller 3.3.0-3.4.0, undisclosed API endpoints may allow for a reflected Cross Site Scripting (XSS) attack.

CVE-2020-5900 HIGH
8.8 Jul 01

In versions 3.0.0-3.4.0, 2.0.0-2.9.0, and 1.0.1, there is insufficient cross-site request forgery (CSRF) protections for

CVE-2020-5863 HIGH
8.6 Mar 27

In NGINX Controller versions prior to 3.2.0, an unauthenticated attacker with network access to the Controller API can c

CVE-2020-5894 HIGH
8.1 May 07

On versions 3.0.0-3.3.0, the NGINX Controller webserver does not invalidate the server-side session token after users lo

CVE-2020-5867 HIGH
8.1 Apr 23

In versions prior to 3.3.0, the NGINX Controller Agent installer script 'install.sh' uses HTTP instead of HTTPS to check

CVE-2021-23019 HIGH
7.8 Jun 01

The NGINX Controller 2.0.0 thru 2.9.0 and 3.x before 3.15.0 Administrator password may be exposed in the systemd.txt fil

CVE-2020-5899 HIGH
7.8 Jul 01

In NGINX Controller 3.0.0-3.4.0, recovery code required to change a user's password is transmitted and stored in the dat

CVE-2020-5895 HIGH
7.8 May 07

On NGINX Controller versions 3.1.0-3.3.0, AVRD uses world-readable and world-writable permissions on its socket, which a

CVE-2020-5910 HIGH
7.5 Jul 02

In versions 3.0.0-3.5.0, 2.0.0-2.9.0, and 1.0.1, the Neural Autonomic Transport System (NATS) messaging services in use

CVE-2021-23018 HIGH
7.4 Jun 01

Intra-cluster communication does not use TLS. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable

CVE-2020-5864 HIGH
7.4 Apr 23

In versions of NGINX Controller prior to 3.2.0, communication between NGINX Controller and NGINX Plus instances skip TLS

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CVE-2021-23021 vulnerability details – vuln.today

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