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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-2022-20716 Cisco SD-WAN Solution Improper Access Control Vulnerability — Cisco SD-WAN Solution 7.8 High 2022-04-15
CVE-2020-25160 B. Braun SpaceCom, Battery Pack SP with Wi-Fi, and Data module compactplus — SpaceCom 6.8 Medium 2022-04-14
CVE-2021-28505 On affected Arista EOS platforms, if a VXLAN match rule exists in an IPv4 access-list that is applied to the ingress of an L2 or an L3 port/SVI, the VXLAN rule and subsequent ACL rules in that access list will ignore the specified IP protocol. — EOS 7.5 High 2022-04-14
CVE-2021-40405 Reolink Rlc-410W 访问控制错误漏洞 — RLC-410W 7.5 - 2022-04-14
CVE-2022-22190 Paragon Active Assurance Control Center: Information disclosure vulnerability in crafted URL — Paragon Active Assurance 7.4 High 2022-04-14
CVE-2022-25755 Siemens SCALANCE 安全漏洞 — SCALANCE X302-7 EEC (230V) 7.5 - 2022-04-12
CVE-2022-25650 Siemens Mendix 安全漏洞 — Mendix Applications using Mendix 7 6.5 - 2022-04-12
CVE-2021-42029 Siemens SIMATIC 安全漏洞 — SIMATIC STEP 7 (TIA Portal) V15 9.8 - 2022-04-12
CVE-2022-28778 Samsung Security Supporter 安全漏洞 — Samsung Security Supporter 4.4 Medium 2022-04-11
CVE-2022-28777 Samsung Members 安全漏洞 — Samsung Members 4.3 Medium 2022-04-11
CVE-2022-28775 Samsung Flow 安全漏洞 — Samsung Flow 5.1 Medium 2022-04-11
CVE-2022-28542 Samsung Galaxy Store 安全漏洞 — Galaxy Store 6.8 Medium 2022-04-11
CVE-2022-27838 Samsung FactoryCameraFB安全漏洞 — FactoryCamera 7.7 High 2022-04-11
CVE-2022-27836 Samsung SMR 安全漏洞 — Samsung Mobile Devices 8.4 High 2022-04-11
CVE-2022-27822 Samsung SMR 安全漏洞 — Samsung Mobile Devices 6.6 Medium 2022-04-11
CVE-2022-26091 Samsung SMR 授权问题漏洞 — Samsung Mobile Devices 5.7 Medium 2022-04-11
CVE-2022-25831 SAMSUNG SMR 安全漏洞 — Samsung Mobile Devices 2.0 Low 2022-04-11
CVE-2022-20762 Cisco Ultra Cloud Core - Subscriber Microservices Infrastructure Privilege Escalation Vulnerability — Cisco Ultra Cloud Core - Subscriber Microservices Infrastructure 7.8 High 2022-04-06
CVE-2022-0405 Improper Access Control in janeczku/calibre-web — janeczku/calibre-web 5.4 - 2022-04-03
CVE-2021-28504 On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule which matches on “vxlan” as protocol then that rule and subsequent rules ( rules declared after it in ACL ) do not match on IP protocol fi ... — EOS 7.5 High 2022-04-01
CVE-2021-36776 Steve API proxy impersonation — Rancher 8.8 High 2022-04-01
CVE-2021-36775 Deleting PRTBs associated to a group doesn't cause deletion of corresponding RoleBindings — Rancher 8.8 High 2022-04-01
CVE-2022-23730 public API安全漏洞 — LG webOS TV 9.8 - 2022-03-11
CVE-2021-42855 Local privilege escalation due to misconfigured write permission on .debug_command.config file — SteelCentral AppInternals Dynamic Sampling Agent 7.8 High 2022-03-09
CVE-2022-25824 Samsung Bixby Touch安全漏洞 — BixbyTouch 4.0 Medium 2022-03-08
CVE-2022-24930 SAMSUNG Wear Os 安全漏洞 — Samsung Wearable Devices 4.4 Medium 2022-03-08
CVE-2022-26317 Siemens Mendix 安全特征问题特征问题漏洞 — Mendix Applications using Mendix 7 7.5 - 2022-03-08
CVE-2022-26313 Siemens Mendix 访问控制错误漏洞 — Mendix Forgot Password Appstore module 9.8 - 2022-03-08
CVE-2022-24309 Siemens Mendix 安全漏洞 — Mendix Runtime V7 6.8 Medium 2022-03-08
CVE-2021-41543 Siemens Climatix Pol909 日志信息泄露漏洞 — Climatix POL909 (AWB module) 6.5 - 2022-03-08

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.