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CWE-732 (关键资源的不正确权限授予) — Vulnerability Class 447

447 vulnerabilities classified as CWE-732 (关键资源的不正确权限授予). AI Chinese analysis included.

CWE-732 represents a critical access control weakness where software assigns overly permissive security attributes to vital resources, such as files, directories, or registry keys. This misconfiguration allows unintended actors to read or modify data that should remain restricted, often leading to sensitive information disclosure or unauthorized system changes. Attackers typically exploit this by identifying these loose permissions to access confidential data or alter critical configurations, potentially escalating privileges or compromising system integrity. To prevent this, developers must adhere to the principle of least privilege, ensuring resources are accessible only to necessary processes and users. Rigorous code reviews, automated static analysis tools, and strict adherence to secure coding standards help identify and correct improper permission assignments before deployment, thereby safeguarding critical assets against unauthorized access and manipulation.

MITRE CWE Description
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. When a resource is given a permission setting that provides access to a wider range of actors than required, it could lead to the exposure of sensitive information, or the modification of that resource by unintended parties. This is especially dangerous when the resource is related to program configuration, execution, or sensitive user data. For example, consider a misconfigured storage account for the cloud that can be read or written by a public or anonymous user.
Common Consequences (3)
ConfidentialityRead Application Data, Read Files or Directories
An attacker may be able to read sensitive information from the associated resource, such as credentials or configuration information stored in a file.
Access ControlGain Privileges or Assume Identity
An attacker may be able to modify critical properties of the associated resource to gain privileges, such as replacing a world-writable executable with a Trojan horse.
Integrity, OtherModify Application Data, Other
An attacker may be able to destroy or corrupt critical data in the associated resource, such as deletion of records from a database.
Mitigations (5)
ImplementationWhen using a critical resource such as a configuration file, check to see if the resource has insecure permissions (such as being modifiable by any regular user) [REF-62], and generate an error or even exit the software if there is a possibility that the resource could have been modified by an unauthorized party.
Architecture and DesignDivide the software into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully defining distinct user groups, privileges, and/or roles. Map these against data, functionality, and the related resources. Then set the permissions accordingly. This will allow you to maintain more fine-grained control over your resources. [REF-207]
Effectiveness: Moderate
Architecture and Design, OperationRun the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software. OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For ex…
Effectiveness: Limited
Implementation, InstallationDuring program startup, explicitly set the default permissions or umask to the most restrictive setting possible. Also set the appropriate permissions during program installation. This will prevent you from inheriting insecure permissions from any user who installs or runs the program.
Effectiveness: High
System ConfigurationFor all configuration files, executables, and libraries, make sure that they are only readable and writable by the software's administrator.
Effectiveness: High
Examples (2)
The following code sets the umask of the process to 0 before creating a file and writing "Hello world" into the file.
#define OUTFILE "hello.out" umask(0); FILE *out; /* Ignore link following (CWE-59) for brevity */ out = fopen(OUTFILE, "w"); if (out) { fprintf(out, "hello world!\n"); fclose(out); }
Bad · C
-rw-rw-rw- 1 username 13 Nov 24 17:58 hello.out
Result
This code creates a home directory for a new user, and makes that user the owner of the directory. If the new directory cannot be owned by the user, the directory is deleted.
function createUserDir($username){ $path = '/home/'.$username; if(!mkdir($path)){ return false; } if(!chown($path,$username)){ rmdir($path); return false; } return true; }
Bad · PHP
CVE IDTitleCVSSSeverityPublished
CVE-2022-0532 CRI-O 安全漏洞 — cri-o 4.2 -2022-02-09
CVE-2021-22284 SECURITY - OPC Server for AC 800M - Remote Code Execution Vulnerability — 800xA, Control Software for AC 800M OPC Server for AC 800M 8.4 High2022-02-04
CVE-2022-0277 Incorrect Permission Assignment for Critical Resource in microweber/microweber — microweber/microweber--2022-01-20
CVE-2022-21694 OTF-006: Broken Website Hardening Control: The CSP can be turned on or off but not configured for the specific needs of the website — onionshare 3.7 Low2022-01-18
CVE-2021-35248 Unrestricted access to Orion.UserSettings SWIS entity for low-privilege users — Orion 6.8 Medium2021-12-20
CVE-2021-43359 Sunnet eHRD - Broken Access Control — eHRD 8.8 High2021-12-01
CVE-2021-24703 Download Plugin < 1.6.1 - Subscriber+ Arbitrary Plugin Activation — Download Plugin 6.5 -2021-11-23
CVE-2021-43019 Adobe Creative Cloud Incorrect Permission Assignment Privilege Escalation Vulnerability — Creative Cloud (desktop component) 7.8 -2021-11-23
CVE-2021-39235 Access mode of block tokens are not enforced — Apache Ozone 8.1 -2021-11-19
CVE-2021-37207 Siemens Sentron Powermanager 安全漏洞 — SENTRON powermanager V3 7.8 -2021-11-09
CVE-2021-38475 AUVESY Versiondog — Versiondog 7.3 High2021-10-22
CVE-2021-31377 Junos OS: A local authenticated attacker can cause RPD to core — Junos OS 5.5 Medium2021-10-19
CVE-2021-34758 Cisco TelePresence Collaboration Endpoint and RoomOS Software Denial of Service Vulnerability — Cisco RoomOS Software 4.4 Medium2021-10-06
CVE-2021-3747 MacOS version of Multipass incorrect owner for application directory — Multipass 8.8 High2021-10-01
CVE-2021-22148 Elasticsearch Elastic Enterprise Search 安全漏洞 — Elastic Enterprise Search 8.8 -2021-09-15
CVE-2021-22149 Elasticsearch Elastic Enterprise Search 安全漏洞 — Elastic Enterprise Search 8.1 -2021-09-15
CVE-2021-22147 Elasticsearch 安全漏洞 — Elasticsearch 6.5 -2021-09-15
CVE-2021-36280 Dell EMC PowerScale 安全漏洞 — PowerScale OneFS 7.8 High2021-08-16
CVE-2021-36279 EMC PowerScale 安全漏洞 — PowerScale OneFS 7.8 High2021-08-16
CVE-2021-21567 Dell Technologies Dell PowerScale OneFS访问控制错误漏洞 — PowerScale OneFS 7.8 High2021-08-10
CVE-2021-25318 rancher: API group not properly specified when creating Kubernetes RBAC resources — Rancher 8.8 High2021-07-15
CVE-2021-31894 Siemens SIMATIC PCS 7 安全漏洞 — SIMATIC PCS 7 V8.2 and earlier 7.8 -2021-07-13
CVE-2021-22921 Nodejs 安全漏洞 — Node 7.8 -2021-07-12
CVE-2021-32526 QSAN Storage Manager - Incorrect Permission Assignment for Critical Resource — Storage Manager 6.5 Medium2021-07-07
CVE-2021-23021 F5 NGINX Controller 安全漏洞 — Nginx Controller 5.5 -2021-06-01
CVE-2020-1701 KubeVirt 安全漏洞 — virt-handler 6.5 -2021-05-27
CVE-2021-31475 SolarWinds Orion Job Scheduler 安全漏洞 — Orion Job Scheduler 8.8 -2021-05-21
CVE-2021-20996 WAGO: Managed Switches: Unsecure Cookie settings — 0852-0303 5.3 Medium2021-05-13
CVE-2021-22669 Advantech WebAccess SCADA 安全漏洞 — Advantech WebAccess/SCADA 8.8 -2021-04-26
CVE-2021-22716 Schneider Electric C-Bus Toolkit 权限许可和访问控制问题漏洞 — C-Bus Toolkit 7.8 High2021-04-13

Vulnerabilities classified as CWE-732 (关键资源的不正确权限授予) represent 447 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.