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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-2021-1600 Cisco Intersight Virtual Appliance IPv4 and IPv6 Forwarding Vulnerabilities — Cisco Intersight Virtual Appliance 8.3 High 2021-07-22
CVE-2021-1601 Cisco Intersight Virtual Appliance IPv4 and IPv6 Forwarding Vulnerabilities — Cisco Intersight Virtual Appliance 8.3 High 2021-07-22
CVE-2021-25320 Rancher: Cloud credentials can be used through proxy API by users without access — Rancher 9.9 Critical 2021-07-15
CVE-2021-32753 Weak password in API gateway in EdgeX Foundry Edinburgh, Fuji, Geneva, and Hanoi releases allows remote attackers to obtain authentication token via dictionary-based password attack when OAuth2 authentication method is enabled. — edgex-go 8.3 High 2021-07-09
CVE-2021-25440 SAMSUNG FactoryCameraFB 安全漏洞 — FactoryCameraFB 7.8 - 2021-07-08
CVE-2021-25439 SAMSUNG Members 安全漏洞 — Samsung Members 4.4 - 2021-07-08
CVE-2021-25438 SAMSUNG Members 安全漏洞 — Samsung Members 7.3 - 2021-07-08
CVE-2021-25431 SAMSUNG Mobile devices 安全漏洞 — Cameralyzer 5.5 - 2021-07-08
CVE-2021-28809 Missing Authentication for Critical Function in RTRR Server in HBS3 — HBS 3 9.8 Critical 2021-07-08
CVE-2021-32517 QSAN Storage Manager - Improper Access Control — Storage Manager 7.5 High 2021-07-07
CVE-2021-32514 QSAN Storage Manager - Improper Access Control Following via FirwareUpgrade function — Storage Manager 7.5 High 2021-07-07
CVE-2021-34627 WP Upload Restriction <= 2.2.3 - Missing Access Control in getSelectedMimeTypesByRole function — WP Upload Restriction 4.3 Medium 2021-07-07
CVE-2021-34626 WP Upload Restriction <= 2.2.3 - Missing Access Control in deleteCustomType function — WP Upload Restriction 4.3 Medium 2021-07-07
CVE-2021-28579 Adobe Connect improper access control could lead to privilege escalation — Connect 4.3 Medium 2021-06-28
CVE-2021-21083 Adobe Experience Manager broken access control in DSRPReindexServlet could lead to denial-of-service — Experience Manager 7.5 High 2021-06-28
CVE-2021-23845 B426 Web Configuration Authentication Bypass — B426 Firmware 8.0 High 2021-06-18
CVE-2020-8300 Citrix Systems Citrix Application Delivery Controller 安全漏洞 — Citrix ADC, Citrix Gateway 8.1 - 2021-06-16
CVE-2021-24359 The Plus Addons for Elementor Page Builder < 4.1.11 - Arbitrary Reset Pwd Email Sending — The Plus Addons for Elementor Page Builder 7.1 - 2021-06-14
CVE-2021-25405 Samsung Notes 安全漏洞 — Samsung Notes 5.0 - 2021-06-11
CVE-2021-25412 Samsung SMR 安全漏洞 — Samsung Mobile Devices 7.8 - 2021-06-11
CVE-2020-14388 Red Hat 3scale API Management Platform 安全漏洞 — Red Hat 3scale API Management 6.3 - 2021-06-02
CVE-2021-32656 Trusted servers exchange can be triggered by attacker — security-advisories 8.6 High 2021-06-01
CVE-2021-32652 Missing permission check on email metadata retrieval — security-advisories 8.8 High 2021-06-01
CVE-2021-24318 Listeo < 1.6.11 - Multiple Authenticated IDOR Vulnerabilities — Listeo 6.5 - 2021-06-01
CVE-2020-10145 Adobe ColdFusion 安全漏洞 — ColdFusion 7.8 High 2021-05-27
CVE-2021-22907 Citrix Systems Workspace App 安全漏洞 — Citrix Workspace App for Windows 8.8 - 2021-05-27
CVE-2020-27831 Red Hat Quay 访问控制错误漏洞 — quay 4.3 - 2021-05-26
CVE-2020-25634 Red Hat 访问控制错误漏洞 — 3scale-system 5.4 - 2021-05-26
CVE-2021-28798 Relative Path Traversal Vulnerability in QTS and QuTS hero — QTS 8.8 High 2021-05-21
CVE-2020-15279 Scanning exclusion paths disclosure in BEST for Windows — Endpoint Security Tools for Windows 4.0 Medium 2021-05-18

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.