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Info
Information for Editors To have a new guideline automatically listed above be sure to label it fio and rule.

Risk Assessment Summary

Rule	Severity	Likelihood	Remediation Cost	Priority	Level
FIO30-C	High	Likely	Medium	P18	L1
FIO32-C	Medium	Unlikely	Medium	P4	L3
FIO34-C	High	Probable	Medium	P12	L1
FIO37-C	High	Probable	Medium	P12	L1
FIO38-C	Low	Probable	Medium	P4	L3
FIO39-C	Low	Likely	Medium	P6	L2
FIO40-C	Low	Probable	Medium	P4	L3
FIO41-C	Low	Unlikely	Medium	P2	L3
FIO42-C	Medium	Unlikely	Medium	P4	L3
FIO44-C	Medium	Unlikely	Medium	P4	L3
FIO45-C	High	Probable	High	P6	L2
FIO46-C	Medium	Unlikely	Medium	P4	L3
FIO47-C	High	Unlikely	Medium	P6	L2

Related Rules and Recommendations

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C programs often rely on files to load and store data needed during program execution. File functions, such as open, read, write, and close are built into the C programming language to simplify how C programs interact with files. However, it is the underlying operating system that manages files. Inconsistencies may exist between how C programs and the underlying operating system handle the files and the file system. Many of these descrepencies can lead to security vulnerabilities.

The following rules and recommendations are suggested to reduce the common errors associated with file operations in C. These guidelines are designed to by system independent. However, files and file management are inherently tied to the underlying operating system. Cases where security issues or recomendations are specific to an architecture are clearly marked as pertaining to that architecture.