CWE-270 特权上下文切换错误

Privilege Context Switching Error

结构: Simple

Abstraction: Base

状态: Draft

被利用可能性: unkown

基本描述

The software does not properly manage privileges while it is switching between different contexts that have different privileges or spheres of control.

相关缺陷

• cwe_Nature: ChildOf cwe_CWE_ID: 269 cwe_View_ID: 1000 cwe_Ordinal: Primary

• cwe_Nature: ChildOf cwe_CWE_ID: 269 cwe_View_ID: 699 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
Access Control	Gain Privileges or Assume Identity	A user can assume the identity of another user with separate privileges in another context. This will give the user unauthorized access that may allow them to acquire the access information of other users.

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-17 ['Architecture and Design', 'Operation']

策略: Environment Hardening

Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.

MIT-49 Architecture and Design

策略: Separation of Privilege

Consider following the principle of separation of privilege. Require multiple conditions to be met before permitting access to a system resource.

分析过的案例

标识	说明	链接
CVE-2002-1688	Web browser cross domain problem when user hits "back" button.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1688
CVE-2003-1026	Web browser cross domain problem when user hits "back" button.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-1026
CVE-2002-1770	Cross-domain issue - third party product passes code to web browser, which executes it in unsafe zone.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1770
CVE-2005-2263	Run callback in different security context after it has been changed from untrusted to trusted. * note that "context switch before actions are completed" is one type of problem that happens frequently, espec. in browsers.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2263

Notes

分类映射

映射的分类名	ImNode ID	Fit	Mapped Node Name
PLOVER			Privilege Context Switching Error

相关攻击模式

• CAPEC-17
• CAPEC-236
• CAPEC-30
• CAPEC-35

引用

• REF-7 Writing Secure Code

• REF-76 Least Privilege

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