CWE-333 详情

True random number generators (TRNG) generally have a limited source of entropy and therefore can fail or block.

引入方式

Architecture and Design
Implementation : REALIZATION: This weakness is caused during implementation of an architectural security tactic.

适用平台

编程语言

类： Not Language-Specific (Undetermined)

常见后果

潜在缓解措施

Phases : Implementation
Since the rate at which true random numbers can be generated is limited, it is important that one uses them only when they are needed for security.
Phases : Implementation
Rather than failing on a lack of random numbers, it is often preferable to wait for more numbers to be created.

漏洞映射说明

依据 : This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
备注 : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

备注

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.

参考资料

REF-18

The CLASP Application Security Process
Secure Software, Inc..
https://cwe.mitre.org/documents/sources/TheCLASPApplicationSecurityProcess.pdf

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