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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-2023-50181 Fortinet FortiADC 安全漏洞 — FortiADC 4.8 Medium 2024-07-09
CVE-2024-39697 phonenumber panics on parsing crafted phonenumber inputs — rust-phonenumber 8.6 High 2024-07-09
CVE-2024-39701 Directus Incorrectly handles _in` filter — directus 6.3 Medium 2024-07-08
CVE-2024-6428 Limited DoS due to permitting creating users with user-defined IDs — Mattermost 5.3 Medium 2024-07-03
CVE-2024-39361 Creating posts with user-defined IDs permitted in CreatePost API — Mattermost 3.1 Low 2024-07-03
CVE-2024-36257 Lack of permission check when updating the profile picture of a remote user (shared channels enabled) — Mattermost 2.7 Low 2024-07-03
CVE-2024-36989 Low-privileged user could create notifications in Splunk Web Bulletin Messages — Splunk Enterprise 6.5 High 2024-07-01
CVE-2024-38518 bbb-web API additional parameters considered — bigbluebutton 4.6 Medium 2024-06-28
CVE-2024-38371 Insufficient access control for OAuth2 Device Code flow in authentik — authentik 8.6 High 2024-06-28
CVE-2024-37905 Improper Access Control and Incorrect Authorization in github.com/goauthentik/authentik — authentik 8.8 High 2024-06-28
CVE-2024-39376 Improper Access Control In TELSAT MarKoni FM Transmitter — Markoni-D (Compact) FM Transmitters 8.1AI High AI 2024-06-27
CVE-2024-2191 Improper Access Control in GitLab — GitLab 5.3 Medium 2024-06-26
CVE-2024-5655 Improper Access Control in GitLab — GitLab 9.6 Critical 2024-06-26
CVE-2024-5430 Improper Access Control in GitLab — GitLab 6.8 Medium 2024-06-26
CVE-2024-38273 moodle: BigBlueButton web service leaks meeting joining information to users who should not have access — Moodle 5.4AI Medium AI 2024-06-18
CVE-2024-5650 Yokogawa Electric 安全漏洞 — CENTUM CS 3000 8.5 High 2024-06-17
CVE-2024-37887 Nextcloud Server's events information leaked with shared calendars on recurrence exceptions — security-advisories 3.5 Low 2024-06-14
CVE-2024-37884 Nextcloud Server's users can delete old versions of read-only shared files — security-advisories 3.5 Low 2024-06-14
CVE-2024-37883 Nextcloud Deck can access comments and attachments of deleted cards — security-advisories 4.3 Medium 2024-06-14
CVE-2024-37882 Nextcloud Server can reshare read&share only folder with more permissions — security-advisories 8.1 High 2024-06-14
CVE-2024-37317 Nextcloud Notes app can be tricked into using a received share created before the user logged in — security-advisories 4.6 Medium 2024-06-14
CVE-2024-37315 Nextcloud Server's read-only users can restore old versions — security-advisories 3.5 Low 2024-06-14
CVE-2024-37314 Nextcloud Photos' shared albums have no restriction on photo removal — security-advisories 3.5 Low 2024-06-14
CVE-2024-37312 Nextcloud user_oidc app's ID4me feature is available even when disabled — security-advisories 6.3 Medium 2024-06-14
CVE-2024-28969 Dell Secure Connect Gateway 访问控制错误漏洞 — Secure Connect Gateway-Application 4.3 Medium 2024-06-13
CVE-2024-28968 Dell Secure Connect Gateway 访问控制错误漏洞 — Secure Connect Gateway-Application 5.4 Medium 2024-06-13
CVE-2024-28967 Dell Secure Connect Gateway 访问控制错误漏洞 — Secure Connect Gateway-Application 5.4 Medium 2024-06-13
CVE-2024-28966 Dell Secure Connect Gateway 访问控制错误漏洞 — Secure Connect Gateway-Application 5.4 Medium 2024-06-13
CVE-2024-28965 Dell Secure Connect Gateway 访问控制错误漏洞 — Secure Connect Gateway-Application 5.4 Medium 2024-06-13
CVE-2024-34112 ColdFusion CFDOCUMENT file retrieval / access control bypass — ColdFusion 7.5 High 2024-06-13

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.