CWE-333 詳細

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

導入モード

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

適用可能なプラットフォーム

言語

クラス： Not Language-Specific (Undetermined)

一般的な結果

潜在的な緩和策

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.

脆弱性マッピングノート

理由 : 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.
コメント : 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.

ノート

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.

参考文献

REF-18

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

登録情報

変更履歴