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CWE-284 (访问控制不恰当) — Vulnerability Class 2612

2612 vulnerabilities classified as CWE-284 (访问控制不恰当). AI Chinese analysis included.

CWE-284 represents a critical security weakness where software fails to properly restrict access to sensitive resources, allowing unauthorized actors to interact with data or functions they should not reach. This flaw typically arises when developers neglect to implement robust authentication or authorization checks, enabling attackers to bypass security controls through direct URL manipulation, token forgery, or privilege escalation techniques. Exploitation often leads to severe consequences, including data breaches, unauthorized system modifications, or complete service disruption. To mitigate this risk, developers must enforce strict access control policies at every layer of the application architecture. This involves implementing comprehensive identity verification, applying the principle of least privilege, and rigorously validating user permissions before granting access to any protected resource, ensuring that only authenticated and authorized users can perform specific actions.

MITRE CWE Description
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Access control involves the use of several protection mechanisms such as: Authentication (proving the identity of an actor) Authorization (ensuring that a given actor can access a resource), and Accountability (tracking of activities that were performed) When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: Specification: incorrect privileges, permissions, ownership, etc. are explicitly specified for either the user or the resource (for example, setting a password file to be world-writable, or giving administrator capabilities to a guest user). This action could be performed by the program or the administrator. Enforcement: the mechanism contains errors that prevent it from properly enforcing the specified access control requirements (e.g., allowing the user to specify their own privileges, or allowing a syntactically-incorrect ACL to produce insecure settings). This problem occurs within the program itself, in that it does not actually enforce the intended security policy that the administrator specifies.
Common Consequences (1)
Other Varies by Context
Mitigations (2)
Architecture and Design, Operation Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separatio…
Examples (2)
This code temporarily raises the program's privileges to allow creation of a new user folder.
def makeNewUserDir(username): if invalidUsername(username): #avoid CWE-22 and CWE-78 print('Usernames cannot contain invalid characters') return False try: raisePrivileges() os.mkdir('/home/' + username) lowerPrivileges() except OSError: print('Unable to create new user directory for user:' + username) return False return True
Bad · Python
This function runs an arbitrary SQL query on a given database, returning the result of the query.
function runEmployeeQuery($dbName, $name){ mysql_select_db($dbName,$globalDbHandle) or die("Could not open Database".$dbName); //Use a prepared statement to avoid CWE-89 $preparedStatement = $globalDbHandle->prepare('SELECT * FROM employees WHERE name = :name'); $preparedStatement->execute(array(':name' => $name)); return $preparedStatement->fetchAll(); } /.../ $employeeRecord = runEmployeeQuery('EmployeeDB',$_GET['EmployeeName']);
Bad · PHP
CVE ID Title CVSS Severity Published
CVE-2020-10627 Insulet Omnipod Insulin Management System 安全漏洞 — Omnipod Insulin Management System 7.3 High 2021-12-01
CVE-2021-3992 Improper Access Control in kevinpapst/kimai2 — kevinpapst/kimai2 6.5 - 2021-12-01
CVE-2021-4026 Improper Access Control in bookstackapp/bookstack — bookstackapp/bookstack 7.1 - 2021-11-30
CVE-2021-42116 Unauthorized Menu Item Access in TopEase — TopEase 4.3 Medium 2021-11-30
CVE-2021-36917 WordPress Hide My WP premium plugin <= 6.2.3 - Unauthenticated Plugin Deactivation vulnerability — Hide My WP (WordPress plugin) 6.5 Medium 2021-11-24
CVE-2021-3554 Improper Access Control vulnerability in the patchesUpdate API — Endpoint Security Tools for Linux 9.0 Critical 2021-11-24
CVE-2021-40130 Cisco Common Services Platform Collector Improper Logging Restriction Vulnerability — Cisco Common Services Platform Collector Software 4.9 Medium 2021-11-18
CVE-2021-36909 WordPress WP Reset PRO Premium plugin <= 5.98 - Authenticated Database Reset vulnerability — WP Reset PRO 8.8 High 2021-11-18
CVE-2021-35528 Authentication Bypass Vulnerability Vulnerability in Retail Operations Product and Counterparty Settlement and Billing (CSB) — Retail Operations 7.2 High 2021-11-17
CVE-2021-42360 Starter Templates — Elementor, Gutenberg & Beaver Builder Templates <= 2.7.0 Authenticated Block Import to Stored XSS — Starter Templates — Elementor, Gutenberg & Beaver Builder Templates 7.6 High 2021-11-17
CVE-2021-24853 QR Redirector < 1.6 - Subscriber+ Arbitrary QR Redirect Response Status Update — QR Redirector 3.5 - 2021-11-17
CVE-2021-26338 AMD System Management Unit 安全漏洞 — 2nd Gen AMD EPYC™ 7.5 - 2021-11-16
CVE-2021-3062 PAN-OS: Improper Access Control Vulnerability Exposing AWS Instance Metadata Endpoint to GlobalProtect Users — PAN-OS 8.1 High 2021-11-10
CVE-2020-12488 Broken Access Control Vulnerability in Jovi Smart Scene — Jovi Smart Scene 5.5 Medium 2021-11-10
CVE-2021-24816 Phoenix Media Rename < 3.4.4 - Author Arbitrary Media File Renaming — Phoenix Media Rename 4.3 - 2021-11-08
CVE-2021-24801 WP Survey Plus <= 1.0 - Subscriber+ AJAX Calls — WP Survey Plus 4.6 - 2021-11-08
CVE-2021-24698 Simple Download Monitor < 3.9.6 - Arbitrary Thumbnails Removal — Simple Download Monitor 4.3 - 2021-11-08
CVE-2021-42359 WP DSGVO Tools (GDPR) <= 3.1.23 Unauthenticated Arbitrary Post Deletion — WP DSGVO Tools (GDPR) 7.5 High 2021-11-05
CVE-2021-25501 Samsung SMR 安全漏洞 — Samsung Mobile Devices 5.7 Medium 2021-11-05
CVE-2021-40113 Cisco Catalyst PON Series Switches Optical Network Terminal Vulnerabilities — Cisco Catalyst PON Series 10.0 Critical 2021-11-04
CVE-2021-40112 Cisco Catalyst PON Series Switches Optical Network Terminal Vulnerabilities — Cisco Catalyst PON Series 10.0 Critical 2021-11-04
CVE-2021-34795 Cisco Catalyst PON Series Switches Optical Network Terminal Vulnerabilities — Cisco Catalyst PON Series 10.0 Critical 2021-11-04
CVE-2021-39333 Hashthemes Demo Importer <= 1.1.1 Improper Access Control Allowing Content Deletion — Hashthemes Demo Importer 8.1 High 2021-11-01
CVE-2021-24781 Image Source Control < 2.3.1 - Contributor+ Arbitrary Post Meta Value Change — Image Source Control 6.5 - 2021-11-01
CVE-2021-41194 Improper Access Control in jupyterhub-firstuseauthenticator — firstuseauthenticator 9.1 Critical 2021-10-28
CVE-2021-34794 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SNMP Access Control Vulnerability — Cisco Adaptive Security Appliance (ASA) Software 5.3 Medium 2021-10-27
CVE-2021-34754 Cisco Firepower Threat Defense Software Ethernet Industrial Protocol Policy Bypass Vulnerabilities — Cisco Firepower Threat Defense Software 5.8 Medium 2021-10-27
CVE-2021-34864 Corel Parallels Desktop 安全漏洞 — Desktop 8.8 - 2021-10-25
CVE-2021-38457 AUVESY Versiondog — Versiondog 9.8 Critical 2021-10-22
CVE-2021-24752 Multiple Plugins from CatchThemes - Unauthorised Plugin's Setting Change — Essential Widgets 5.7 - 2021-10-18

Vulnerabilities classified as CWE-284 (访问控制不恰当) represent 2612 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.