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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-2024-42033 Huawei EMUI和Huawei HarmonyOS 安全漏洞 — HarmonyOS 6.9 Medium 2024-08-08
CVE-2024-38202 Windows Update Stack Elevation of Privilege Vulnerability — Windows 10 Version 1809 7.3 High 2024-08-08
CVE-2024-21302 Windows Secure Kernel Mode Elevation of Privilege Vulnerability — Windows 10 Version 1809 6.7 Medium 2024-08-08
CVE-2024-7553 Accessing Untrusted Directory May Allow Local Privilege Escalation — MongoDB Server 7.3 High 2024-08-07
CVE-2024-33027 Improper Access Control in Graphics Linux — Snapdragon 8.4 High 2024-08-05
CVE-2024-41926 Malicious remote can claim that a user was synced from another remote — Mattermost 2.7 Low 2024-08-01
CVE-2024-41162 Malicious remote can make an arbitrary local channel read-only — Mattermost 4.1 Medium 2024-08-01
CVE-2024-41144 Malicious remote can create/update/delete arbitrary posts in arbitrary channels — Mattermost 5.5 Medium 2024-08-01
CVE-2024-39839 Remote username set to an arbitrary string by remote user — Mattermost 4.3 Medium 2024-08-01
CVE-2024-39837 Malicious remote can create arbitrary channels — Mattermost 3.8 Low 2024-08-01
CVE-2024-39777 Malicious remote can invite itself to an arbitrary local channel — Mattermost 8.7 High 2024-08-01
CVE-2024-39274 Malicious remote can add users to arbitrary teams and channels — Mattermost 8.7 High 2024-08-01
CVE-2024-36492 Existing local user overwritten by malicious remote — Mattermost 7.4 High 2024-08-01
CVE-2024-29977 Malicious remote can create arbitrary reactions on arbitrary posts — Mattermost 2.7 Low 2024-08-01
CVE-2024-5331 Breakdance <= 1.7.2 - Missing Authorization — Breakdance 4.3 Medium 2024-08-01
CVE-2024-6727 Broken Access Control in Delphix — Data Control Tower (DCT) 5.4 Medium 2024-07-29
CVE-2024-7154 TOTOLINK A3700R Password Reset wizard.html access control — A3700R 4.3 Medium 2024-07-28
CVE-2024-41806 Open edX Platform's instructor upload CSV for cohort creation not Private by Default — edx-platform 5.3 Medium 2024-07-25
CVE-2024-7057 Improper Access Control in GitLab — GitLab 4.3 Medium 2024-07-25
CVE-2024-38164 GroupMe Elevation of Privilege Vulnerability — GroupMe 9.6 Critical 2024-07-23
CVE-2024-6738 WisdomGarden Tronclass - Broken Access Control — Tronclass 5.3 Medium 2024-07-15
CVE-2024-6737 2100 TECHNOLOGY Electronic Official Document Management System - Broken Access Control — Electronic Official Document Management System 8.8 High 2024-07-15
CVE-2024-2880 Improper Access Control in GitLab — GitLab 2.7 Low 2024-07-11
CVE-2024-5257 Improper Access Control in GitLab — GitLab 4.9 Medium 2024-07-11
CVE-2024-5470 Improper Access Control in GitLab — GitLab 3.8 Low 2024-07-11
CVE-2024-6385 Improper Access Control in GitLab — GitLab 9.6 Critical 2024-07-11
CVE-2024-37147 GLPI allows Authenticated File Upload to Restricted Tickets — glpi 4.3 Medium 2024-07-10
CVE-2024-38100 Windows File Explorer Elevation of Privilege Vulnerability — Windows Server 2019 7.8 High 2024-07-09
CVE-2024-38061 DCOM Remote Cross-Session Activation Elevation of Privilege Vulnerability — Windows 10 Version 1809 7.5 High 2024-07-09
CVE-2024-23663 Fortinet FortiExtender 访问控制错误漏洞 — FortiExtender 8.1 High 2024-07-09

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.