CWE-1220: Insufficient Granularity of Access Control

ID CWE-1220

Abstraction Base

Structure Simple

Status Incomplete

Number of CVEs 28

The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets.

Integrated circuits and hardware engines can expose accesses to assets (device configuration, keys, etc.) to trusted firmware or a software module (commonly set by BIOS/bootloader). This access is typically access-controlled. Upon a power reset, the hardware or system usually starts with default values in registers, and the trusted firmware (Boot firmware) configures the necessary access-control protection.

A common weakness that can exist in such protection schemes is that access controls or policies are not granular enough. This condition allows agents beyond trusted agents to access assets and could lead to a loss of functionality or the ability to set up the device securely. This further results in security risks from leaked, sensitive, key material to modification of device configuration.

Modes of Introduction

Phase	Note
Architecture and Design	Such issues could be introduced during hardware architecture and design and identified later during Testing or System Configuration phases.
Implementation	Such issues could be introduced during hardware implementation and identified later during Testing or System Configuration phases.

Applicable Platforms

Type	Class	Name	Prevalence
Language	Not Language-Specific
Operating_system	Not OS-Specific
Architecture	Not Architecture-Specific
Technology	Not Technology-Specific

Relationships

View			Weakness
# ID	View	Status	# ID	Name	Abstraction	Structure	Status
CWE-1000	Research Concepts	Draft	CWE-284	Improper Access Control	Pillar	Simple	Incomplete

Common Attack Pattern Enumeration and Classification (CAPEC)

The Common Attack Pattern Enumeration and Classification (CAPEC™) effort provides a publicly available catalog of common attack patterns that helps users understand how adversaries exploit weaknesses in applications and other cyber-enabled capabilities.

CAPEC at Mitre.org

# ID	Name	Weaknesses
CAPEC-1	Accessing Functionality Not Properly Constrained by ACLs	CWE-1220
CAPEC-180	Exploiting Incorrectly Configured Access Control Security Levels	CWE-1220

CVEs Published

Based on CVE published date

CVSS Severity

CVSS Severity - By Year

CVSS Base Score

# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	Exploits	PoC	Pubblication Date	Modification Date
# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	PoC	Pubblication Date	Modification Date