CWE-340 詳細資料

The product uses a scheme that generates numbers or identifiers that are more predictable than required.

引入方式

Architecture and Design
Implementation

適用平台

程式語言

類別： Not Language-Specific (Undetermined)

常見後果

觀察到的案例

偵測方法

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.)

漏洞對應備注

理由說明 : This CWE entry is a Class and might have Base-level children that would be more appropriate
備註 : Examine children of this entry to see if there is a better fit

備注

As of CWE 4.5, terminology related to randomness, entropy, and predictability can vary widely. Within the developer and other communities, "randomness" is used heavily. However, within cryptography, "entropy" is distinct, typically implied as a measurement. There are no commonly-used definitions, even within standards documents and cryptography papers. Future versions of CWE will attempt to define these terms and, if necessary, distinguish between them in ways that are appropriate for different communities but do not reduce the usability of CWE for mapping, understanding, or other scenarios.

參考資料

REF-44

24 Deadly Sins of Software Security
Michael Howard, David LeBlanc, John Viega.

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