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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-2021-38454 Moxa MXview Network Management Software — MXview Network Management Software 10.0 Critical 2021-10-12
CVE-2021-28129 DEB packaging for Apache OpenOffice 4.1.8 installed with a non-root userid and groupid — Apache OpenOffice 7.1 - 2021-10-07
CVE-2021-38392 Improper Access Control for Boston Scientific Zoom Latitude — ZOOM LATITUDE 6.5 Medium 2021-10-04
CVE-2021-41298 ECOA BAS controller - Improper Access Control — ECS Router Controller ECS (FLASH) 8.8 High 2021-09-30
CVE-2020-12030 Emerson WirelessHART Gateway — Wireless 1410 Gateway 10.0 Critical 2021-09-29
CVE-2021-20034 Sonicwall SMA100 路径遍历漏洞 — SMA100 9.1 - 2021-09-27
CVE-2021-22941 Citrix Systems Citrix ShareFile 安全漏洞 — Citrix ShareFile storage zones controller 9.4 - 2021-09-23
CVE-2021-1419 Cisco Access Points SSH Management Privilege Escalation Vulnerability — Cisco Wireless LAN Controller (WLC) 7.8 High 2021-09-23
CVE-2021-34724 Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability — Cisco IOS XE SD-WAN Software 6.0 Medium 2021-09-23
CVE-2021-34696 Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability — Cisco IOS XE Software 5.8 Medium 2021-09-23
CVE-2021-1625 Cisco IOS XE Software Zone-Based Policy Firewall ICMP and UDP Inspection Vulnerability — Cisco IOS XE Software 5.8 Medium 2021-09-23
CVE-2021-24635 Visual Link Preview < 2.2.3 - Unauthorised AJAX Calls — Visual Link Preview 5.4 - 2021-09-20
CVE-2021-24583 Timetable and Event Schedule by MotoPress < 2.4.2 - Unauthorised Event TimeSlot Deletion — Timetable and Event Schedule by MotoPress 3.5 - 2021-09-20
CVE-2021-37183 Siemens SINEMA Remote Connect Server 访问控制错误漏洞 — SINEMA Remote Connect Server 6.5 - 2021-09-14
CVE-2021-25463 SAMSUNG PENUP 安全漏洞 — PENUP 4.0 Medium 2021-09-09
CVE-2021-35213 Orion User setting Improper Access Control Privilege Escalation Vulnerability — Orion Platform 8.9 High 2021-08-31
CVE-2021-35221 ImportAlert Improper Access Control Tampering Vulnerability — Orion Platform 6.3 Medium 2021-08-31
CVE-2021-1591 Cisco Nexus 9500 Series Switches Access Control List Bypass Vulnerability — Cisco NX-OS Software 5.8 Medium 2021-08-25
CVE-2021-1583 Cisco Nexus 9000 Series Fabric Switches ACI Mode Arbitrary File Read Vulnerability — Cisco NX-OS System Software in ACI Mode 4.4 Medium 2021-08-25
CVE-2021-1581 Cisco Application Policy Infrastructure Controller Command Injection and File Upload Vulnerabilities — Cisco Application Policy Infrastructure Controller (APIC) 6.5 Medium 2021-08-25
CVE-2021-1580 Cisco Application Policy Infrastructure Controller Command Injection and File Upload Vulnerabilities — Cisco Application Policy Infrastructure Controller (APIC) 6.5 Medium 2021-08-25
CVE-2021-1577 Cisco Application Policy Infrastructure Controller Arbitrary File Read and Write Vulnerability — Cisco Application Policy Infrastructure Controller (APIC) 9.1 Critical 2021-08-25
CVE-2021-25956 Improper User Access Control in "Dolibarr" Leads to Account Takeover — dolibarr 4.7 Medium 2021-08-17
CVE-2021-1113 NVIDIA Jetson 权限许可和访问控制问题漏洞 — Jetson AGX Xavier series, Jetson Xavier NX, Jetson TX2 series, Jetson TX2 NX, Jetson Nano, Jetson Nano 2GB, Jetson TX1 4.7 Medium 2021-08-11
CVE-2021-25954 Improper Access Control in “Dolibarr” — dolibarr 4.3 Medium 2021-08-09
CVE-2021-32002 SiteManager troubleshooter allows access without authentication from local network — SiteManager 4.3 Medium 2021-08-05
CVE-2021-22920 Citrix Application Delivery Controller安全漏洞 — Citrix ADC, Citrix Gateway 6.5 - 2021-08-05
CVE-2021-25448 SAMSUNG Smart Touch Call 安全漏洞 — Smart Touch Call 5.3 - 2021-08-05
CVE-2021-25447 SAMSUNG SmartThings 安全漏洞 — Smart Things 8.2 - 2021-08-05
CVE-2021-25446 SAMSUNG SmartThings 安全漏洞 — Smart Things 5.3 - 2021-08-05

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.