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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-2024-29993 Azure CycleCloud Elevation of Privilege Vulnerability — Azure CycleCloud 8.6.0 8.8 High 2024-04-09
CVE-2024-29054 Microsoft Defender for IoT Elevation of Privilege Vulnerability — Microsoft Defender for IoT 7.2 High 2024-04-09
CVE-2024-29055 Microsoft Defender for IoT Elevation of Privilege Vulnerability — Microsoft Defender for IoT 7.2 High 2024-04-09
CVE-2024-28917 Azure Arc-enabled Kubernetes Extension Cluster-Scope Elevation of Privilege Vulnerability — Azure Arc Extension 6.2 Medium 2024-04-09
CVE-2024-26234 Proxy Driver Spoofing Vulnerability — Windows 10 Version 1809 6.7 Medium 2024-04-09
CVE-2024-29990 Microsoft Azure Kubernetes Service Confidential Container Elevation of Privilege Vulnerability — Azure Kubernetes Service 9.0 Critical 2024-04-09
CVE-2024-28922 Secure Boot Security Feature Bypass Vulnerability — Windows 10 Version 1809 4.1 Medium 2024-04-09
CVE-2024-21424 Azure Compute Gallery Elevation of Privilege Vulnerability — Azure Compute Gallery 6.5 Medium 2024-04-09
CVE-2024-2447 Mattermost 安全漏洞 — Mattermost 6.5 Medium 2024-04-05
CVE-2024-29221 Invite ID available to team admins even without the "Add Members" permission — Mattermost 4.7 Medium 2024-04-05
CVE-2024-21848 Users maintain access to active call after being removed from a channel — Mattermost 3.1 Low 2024-04-05
CVE-2024-30261 Undici's fetch with integrity option is too lax when algorithm is specified but hash value is in incorrect — undici 2.6 Low 2024-04-04
CVE-2024-1418 CGC Maintenance Mode <= 1.2 - Sensitive Information Exposure — CGC Maintenance Mode 5.3 Medium 2024-04-04
CVE-2024-3270 ThingsBoard AdvancedFeature access control — ThingsBoard 3.8 Low 2024-04-03
CVE-2024-20283 Cisco Nexus Dashboard 安全漏洞 — Cisco Nexus Dashboard 4.3 Medium 2024-04-03
CVE-2024-20302 Cisco Nexus Dashboard 安全漏洞 — Cisco Nexus Dashboard Orchestrator 5.4 Medium 2024-04-03
CVE-2024-3164 dotCMS 安全漏洞 — dotCMS core 4.5 Medium 2024-04-01
CVE-2024-28016 NEC Corporation Aterm 安全漏洞 — WG1800HP4 8.1AI High AI 2024-03-28
CVE-2024-25962 Dell InsightIQ 访问控制错误漏洞 — InsightIQ 8.3 High 2024-03-27
CVE-2024-1473 Coming Soon & Maintenance Mode by Colorlib <= 1.0.99 - Information Exposure — Coming Soon & Maintenance Mode by Colorlib 5.3 Medium 2024-03-20
CVE-2024-1144 Improper Access Control at Alma Devklan Blog — Alma Blog 6.5 Medium 2024-03-19
CVE-2024-20767 ColdFusion | Improper Access Control (CWE-284) — ColdFusion 7.4 High 2024-03-18
CVE-2024-2481 Surya2Developer Hostel Management System manage-students.php access control — Hostel Management System 6.5 Medium 2024-03-15
CVE-2024-20319 Cisco IOS XR 安全漏洞 — Cisco IOS XR Software 4.3 Medium 2024-03-13
CVE-2024-20315 Cisco IOS XR 安全漏洞 — Cisco IOS XR Software 5.8 Medium 2024-03-13
CVE-2024-20322 Cisco IOS XR 安全漏洞 — Cisco IOS XR Software 5.8 Medium 2024-03-13
CVE-2024-1668 Avada <= 7.11.5 - Authenticated(Contributor+) Sensitive Information Exposure via Form Entries — Avada | Website Builder For WordPress & WooCommerce 6.5 Medium 2024-03-13
CVE-2024-0687 Restrict User Access – Ultimate Membership & Content Protection <= 2.5 - Information Exposure — Restrict User Access – Ultimate Membership & Content Protection 5.3 Medium 2024-03-13
CVE-2024-0377 LifterLMS – WordPress LMS Plugin for eLearning <= 7.5.1 - Missing Authorization via process_review — LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes 5.3 Medium 2024-03-13
CVE-2024-0369 Bulk Edit Post Titles <= 5.0.0 - Missing Authorization via bulkUpdatePostTitles — Bulk Edit Post Titles 4.3 Medium 2024-03-13

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.