CWE-829: Inclusion of Functionality from Untrusted Control Sphere

Base Incomplete Simple

CWE版本: 4.18

更新日期: 2025-09-09

弱点描述

The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.

常见后果

影响范围: Confidentiality Integrity Availability

技术影响: Execute Unauthorized Code or Commands

说明: An attacker could insert malicious functionality into the program by causing the program to download code that the attacker has placed into the untrusted control sphere, such as a malicious web site.

潜在缓解措施

阶段: Architecture and Design

策略: Libraries or Frameworks

描述: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].

阶段: Architecture and Design

策略: Enforcement by Conversion

阶段: Architecture and Design

描述: For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

阶段: Architecture and Design Operation

策略: Sandbox or Jail

有效性: Limited

阶段: Architecture and Design Operation

策略: Environment Hardening

描述: 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.

阶段: Implementation

策略: Input Validation

有效性: High

阶段: Architecture and Design Operation

策略: Attack Surface Reduction

阶段: Architecture and Design Implementation

策略: Attack Surface Reduction

阶段: Operation

策略: Firewall

描述: Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].

有效性: Moderate

检测方法

方法: Automated Static Analysis - Binary or Bytecode

有效性: SOAR Partial

方法: Manual Static Analysis - Binary or Bytecode

有效性: SOAR Partial

方法: Dynamic Analysis with Manual Results Interpretation

有效性: SOAR Partial

方法: Manual Static Analysis - Source Code

有效性: High

方法: Automated Static Analysis - Source Code

有效性: SOAR Partial

方法: Architecture or Design Review

有效性: High

观察示例

参考: CVE-2010-2076

Product does not properly reject DTDs in SOAP messages, which allows remote attackers to read arbitrary files, send HTTP requests to intranet servers, or cause a denial of service.

参考: CVE-2004-0285