Chi tiết CWE-333

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

Các cách xuất hiện

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

Nền tảng áp dụng

Ngôn ngữ

Lớp: Not Language-Specific (Undetermined)

Hậu quả phổ biến

Các biện pháp giảm thiểu tiềm năng

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.

Ghi chú ánh xạ lỗ hổng

Lý do : 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.
Bình luận : 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.

Ghi chú

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.

Tài liệu tham khảo

REF-18

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

Gửi

Sửa đổi