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Dữ liệu MITRE CWE chính thức

Hiện thực hóa: In C, using an uninitialized char * in some string libraries will return incorrect results, as the libraries expect the null terminator to always be at the end of a string, even if the string is empty.

Dữ liệu MITRE CWE chính thức

Tác động	Phạm vi	Diễn giải
Khác	Tính sẵn sàng, Tính toàn vẹn, Khác	Initial variables usually contain junk, which can not be trusted for consistency. This can lead to denial of service conditions, or modify control flow in unexpected ways. In some cases, an attacker can "pre-initialize" the variable using previous actions, which might enable code execution. This can cause a race condition if a lock variable check passes when it should not.
Khác	Phân quyền, Khác	Strings that are not initialized are especially dangerous, since many functions expect a null at the end -- and only at the end -- of a string.

Dữ liệu MITRE CWE chính thức

Giảm bề mặt tấn công · Hiện thực hóaEnsure that critical variables are initialized before first use [REF-1485].
Gia cố quá trình biên dịch hoặc xây dựng · Xây dựng và biên dịchMost compilers will complain about the use of uninitialized variables if warnings are turned on.
Hiện thực hóa, Vận hànhWhen using a language that does not require explicit declaration of variables, run or compile the software in a mode that reports undeclared or unknown variables. This may indicate the presence of a typographic error in the variable's name.
Lựa chọn ngôn ngữ · Yêu cầuChoose a language that is not susceptible to these issues.
Kiến trúc và thiết kếMitigating technologies such as safe string libraries and container abstractions could be introduced.

Dữ liệu MITRE CWE chính thức

Phương pháp	Cách làm	Hiệu quả
Kiểm thử fuzzing	Fuzz testing (fuzzing) is a powerful technique for generating large numbers of diverse inputs - either randomly or algorithmically - and dynamically invoking the code with those inputs. Even with random inputs, it is often capable of generating unexpected results such as crashes, memory corruption, or resource consumption. Fuzzing effectively produces repeatable test cases that clearly indicate bugs, which helps developers to diagnose the issues.	Cao
Phân tích tĩnh tự động	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.)	Cao

Dữ liệu MITRE CWE chính thức

Dưới đây là các lỗ hổng tiêu biểu liên quan đến CWE-457, dựa theo mức độ ưu tiên

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