CWE-201 通过发送数据的信息暴露

Information Exposure Through Sent Data

结构: Simple

Abstraction: Variant

状态: Draft

被利用可能性: unkown

基本描述

The accidental exposure of sensitive information through sent data refers to the transmission of data which are either sensitive in and of itself or useful in the further exploitation of the system through standard data channels.

适用平台

Language: {'cwe_Class': 'Language-Independent', 'cwe_Prevalence': 'Undetermined'}

常见的影响

范围	影响	注释
Confidentiality	['Read Files or Directories', 'Read Memory', 'Read Application Data']	Sensitive data may be exposed to attackers.

可能的缓解方案

Requirements

策略:

Specify which data in the software should be regarded as sensitive. Consider which types of users should have access to which types of data.

Implementation

策略:

Ensure that any possibly sensitive data specified in the requirements is verified with designers to ensure that it is either a calculated risk or mitigated elsewhere. Any information that is not necessary to the functionality should be removed in order to lower both the overhead and the possibility of security sensitive data being sent.

System Configuration

策略:

Setup default error messages so that unexpected errors do not disclose sensitive information.

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.

示例代码

例

The following is an actual MySQL error statement:

result SQL

Warning: mysql_pconnect(): Access denied for user: 'root@localhost' (Using password: N1nj4) in /usr/local/www/wi-data/includes/database.inc on line 4

The error clearly exposes the database credentials.

分类映射

映射的分类名	ImNode ID	Fit	Mapped Node Name
CLASP			Accidental leaking of sensitive information through sent data

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