Chi tiết CWE-625

The product uses a regular expression that does not sufficiently restrict the set of allowed values.

Các cách xuất hiện

Implementation : This problem is frequently found when the regular expression is used in input validation or security features such as authentication.

Nền tảng áp dụng

Ngôn ngữ

Tên: Perl (Undetermined)
Tên: PHP (Undetermined)
Tên: Python (Undetermined)

Hậu quả phổ biến

Ví dụ đã quan sát

Các biện pháp giảm thiểu tiềm năng

Phases : Implementation
When applicable, ensure that the regular expression marks beginning and ending string patterns, such as "/^string$/" for Perl.

Phương pháp phát hiện

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.)
Hiệu quả : High

Ghi chú ánh xạ lỗ hổng

Lý do : This CWE entry is at the Base 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.

Tài liệu tham khảo

REF-62

The Art of Software Security Assessment
Mark Dowd, John McDonald, Justin Schuh.

Gửi

Sửa đổi