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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-2024-43590 Visual C++ Redistributable Installer Elevation of Privilege Vulnerability — Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) 7.8 High 2024-10-08
CVE-2024-43456 Windows Remote Desktop Services Tampering Vulnerability — Windows Server 2008 R2 Service Pack 1 4.8 Medium 2024-10-08
CVE-2024-43503 Microsoft SharePoint Elevation of Privilege Vulnerability — Microsoft SharePoint Enterprise Server 2016 7.8 High 2024-10-08
CVE-2024-9576 Improper access control in Linux Workbooth Distro — Linux Workbooth 7.0 High 2024-10-07
CVE-2024-45408 eLabFTW contains a direct and indirect information disclosure — elabftw 7.5 High 2024-10-01
CVE-2024-9321 SourceCodester Online Railway Reservation System view_details.php access control — Online Railway Reservation System 5.3 Medium 2024-09-29
CVE-2024-9298 SourceCodester Online Railway Reservation System Ticket ?page=tickets access control — Online Railway Reservation System 4.3 Medium 2024-09-28
CVE-2024-42406 Unauthorized access on archived channels — Mattermost 5.4 Medium 2024-09-26
CVE-2024-47145 Unauthorized access on archived channels via file links — Mattermost 3.1 Low 2024-09-26
CVE-2024-20465 Cisco IOS 安全漏洞 — IOS 5.8 Medium 2024-09-25
CVE-2024-9003 Jinan Chicheng Company JFlow Attachment EntityMutliFile_Load.do AttachmentUploadController access control — JFlow 4.3 Medium 2024-09-19
CVE-2024-38016 Microsoft Office Visio Remote Code Execution Vulnerability — Microsoft 365 Apps for Enterprise 7.8 High 2024-09-19
CVE-2024-46990 SSRF Loopback IP filter bypass in directus — directus 5.0 Medium 2024-09-18
CVE-2024-39772 Silent Desktop Screenshot Capture — Mattermost 3.7 Low 2024-09-16
CVE-2024-8779 The SYSCOM Group OMFLOW - Broken Access Control — OMFLOW 8.8 High 2024-09-16
CVE-2024-8269 MStore API – Create Native Android & iOS Apps On The Cloud <= 4.15.3 - Unauthorized User Registration — MStore API – Create Native Android & iOS Apps On The Cloud 7.3 High 2024-09-13
CVE-2024-20343 Cisco IOS XR Software CLI Arbitrary File Read Vulnerability — Cisco IOS XR Software 5.5 Medium 2024-09-11
CVE-2024-43479 Microsoft Power Automate Desktop Remote Code Execution Vulnerability — Power Automate for Desktop 8.5 High 2024-09-10
CVE-2024-37341 Microsoft SQL Server Elevation of Privilege Vulnerability — Microsoft SQL Server 2016 Service Pack 3 (GDR) 8.8 High 2024-09-10
CVE-2024-43492 Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability — Microsoft AutoUpdate for Mac 7.8 High 2024-09-10
CVE-2024-38220 Azure Stack Hub Elevation of Privilege Vulnerability — Azure Stack Hub 9.0 Critical 2024-09-10
CVE-2024-45323 Fortinet FortiEDR 访问控制错误漏洞 — FortiEDR Manager 4.6 Medium 2024-09-10
CVE-2024-37993 Siemens SIMATIC 访问控制错误漏洞 — SIMATIC Reader RF610R CMIIT 5.3 Medium 2024-09-10
CVE-2024-39580 Dell InsightIQ 访问控制错误漏洞 — PowerScale InsightIQ 6.7 Medium 2024-09-10
CVE-2024-6796 Vulnerability in Baxter Connex Health Portal — Connex Health Portal 8.2 High 2024-09-09
CVE-2024-45392 SuiteCRM has wrong deletion permission checks on API delete call — SuiteCRM 7.7 High 2024-09-05
CVE-2024-45313 Insecure default setting for Server Pro installed via Overleaf toolkit — overleaf 5.4 Medium 2024-09-02
CVE-2024-20279 Cisco Application Policy Infrastructure Controller Unauthorized Policy Actions Vulnerability — Cisco Application Policy Infrastructure Controller (APIC) 4.3 Medium 2024-08-28
CVE-2024-8216 nafisulbari/itsourcecode Insurance Management System Payment editPayment.php access control — Insurance Management System 5.4 Medium 2024-08-27
CVE-2024-40766 SonicWALL SonicOS 访问控制错误漏洞 — SonicOS 7.5AI High AI 2024-08-23

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.