CWE-276 缺省权限不正确
Incorrect Default Permissions
结构: Simple
Abstraction: Base
状态: Draft
被利用可能性: Medium
基本描述
The software, upon installation, sets incorrect permissions for an object that exposes it to an unintended actor.
相关缺陷
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cwe_Nature: ChildOf cwe_CWE_ID: 732 cwe_View_ID: 1000 cwe_Ordinal: Primary
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cwe_Nature: ChildOf cwe_CWE_ID: 732 cwe_View_ID: 1003 cwe_Ordinal: Primary
适用平台
Language: {'cwe_Class': 'Language-Independent', 'cwe_Prevalence': 'Undetermined'}
常见的影响
| 范围 | 影响 | 注释 |
|---|---|---|
| ['Confidentiality', 'Integrity'] | ['Read Application Data', 'Modify Application Data'] |
检测方法
Automated Static Analysis - Binary or Bytecode
According to SOAR, the following detection techniques may be useful:
- Inter-application Flow Analysis
Manual Static Analysis - Binary or Bytecode
According to SOAR, the following detection techniques may be useful:
- Binary / Bytecode disassembler - then use manual analysis for vulnerabilities & anomalies
Dynamic Analysis with Automated Results Interpretation
According to SOAR, the following detection techniques may be useful:
- Host-based Vulnerability Scanners – Examine configuration for flaws, verifying that audit mechanisms work, ensure host configuration meets certain predefined criteria
- Web Application Scanner
- Web Services Scanner
- Database Scanners
Dynamic Analysis with Manual Results Interpretation
According to SOAR, the following detection techniques may be useful:
- Host Application Interface Scanner
- Fuzz Tester
- Framework-based Fuzzer
- Automated Monitored Execution
- Forced Path Execution
Manual Static Analysis - Source Code
According to SOAR, the following detection techniques may be useful:
- Manual Source Code Review (not inspections)
- Focused Manual Spotcheck - Focused manual analysis of source
Automated Static Analysis - Source Code
According to SOAR, the following detection techniques may be useful:
- Context-configured Source Code Weakness Analyzer
Automated Static Analysis
According to SOAR, the following detection techniques may be useful:
- Configuration Checker
Architecture or Design Review
According to SOAR, the following detection techniques may be useful:
- Formal Methods / Correct-By-Construction
- Inspection (IEEE 1028 standard) (can apply to requirements, design, source code, etc.)
可能的缓解方案
MIT-1 ['Architecture and Design', 'Operation']
策略:
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
MIT-46 Architecture and Design
策略: Separation of Privilege
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 that the compartmentalization serves to allow for and further reinforce privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide when it is appropriate to use and to drop system privileges.
分析过的案例
| 标识 | 说明 | 链接 |
|---|---|---|
| CVE-2005-1941 | Executables installed world-writable. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1941 |
| CVE-2002-1713 | Home directories installed world-readable. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1713 |
| CVE-2001-1550 | World-writable log files allow information loss; world-readable file has cleartext passwords. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-1550 |
| CVE-2002-1711 | World-readable directory. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1711 |
| CVE-2002-1844 | Windows product uses insecure permissions when installing on Solaris (genesis: port error). | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1844 |
| CVE-2001-0497 | Insecure permissions for a shared secret key file. Overlaps cryptographic problem. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0497 |
| CVE-1999-0426 | Default permissions of a device allow IP spoofing. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0426 |
分类映射
| 映射的分类名 | ImNode ID | Fit | Mapped Node Name |
|---|---|---|---|
| PLOVER | Insecure Default Permissions | ||
| CERT C Secure Coding | FIO06-C | Create files with appropriate access permissions | |
| The CERT Oracle Secure Coding Standard for Java (2011) | FIO01-J | Create files with appropriate access permission |
相关攻击模式
- CAPEC-1
- CAPEC-127
- CAPEC-81
引用
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