CWE-347: Improper Verification of Cryptographic Signature
CWE版本: 4.18
更新日期: 2025-09-09
弱点描述
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
常见后果
影响范围: Access Control Integrity Confidentiality
技术影响: Gain Privileges or Assume Identity Modify Application Data Execute Unauthorized Code or Commands
说明: An attacker could gain access to sensitive data and possibly execute unauthorized code.
检测方法
方法: Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
有效性: High
观察示例
参考: CVE-2002-1796
Does not properly verify signatures for "trusted" entities.
参考: CVE-2005-2181
Insufficient verification allows spoofing.
参考: CVE-2005-2182
Insufficient verification allows spoofing.
参考: CVE-2002-1706
Accepts a configuration file without a Message Integrity Check (MIC) signature.
引入模式
| 阶段 | 说明 |
|---|---|
| Architecture and Design | - |
| Implementation | REALIZATION: This weakness is caused during implementation of an architectural security tactic. |
适用平台
编程语言
分类映射
| 分类名称 | 条目ID | 条目名称 | 映射适配度 |
|---|---|---|---|
| PLOVER | - | Improperly Verified Signature | - |
| The CERT Oracle Secure Coding Standard for Java (2011) | SEC06-J | Do not rely on the default automatic signature verification provided by URLClassLoader and java.util.jar | - |
| ISA/IEC 62443 | Part 3-3 | Req SR 1.9 | - |
| ISA/IEC 62443 | Part 4-1 | Req SM-6 | - |
| ISA/IEC 62443 | Part 4-2 | Req EDR 3.12 | - |
| ISA/IEC 62443 | Part 4-2 | Req NDR 3.12 | - |
| ISA/IEC 62443 | Part 4-2 | Req HDR 3.12 | - |