BADFUNC.TEMP.GETTEMPFILENAME : Use of GetTempFileName

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A use of GetTempFileName(), GetTempFileNameA(), or GetTempFileNameW(), which are associated with temporary file vulnerabilities.

Class Name

Use of GetTempFileName

Significance

security

Mnemonic

BADFUNC.TEMP.GETTEMPFILENAME

Categories

CWE	CWE:377	Insecure Temporary File
	CWE:676	Use of Potentially Dangerous Function
CERT-C	CERT-C:FIO01-C	Be careful using functions that use file names for identification
	CERT-C:FIO21-C	Do not create temporary files in shared directories
OWASP-2017	OWASP-2017:A9	Using components with known vulnerabilities
OWASP-2021	OWASP-2021:A6	Vulnerable and outdated components

Availability

Available for C and C++.

Enabling

Checks for this warning class are enabled by default. To disable them, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += discard class="Use of GetTempFileName"

When you see a Use of GetTempFileName warning, make sure that the temporary file name cannot be guessed by an attacker (for example, because it has a random component). If so, you can change the warning state to Suppressed.

To include an additional function or set of functions in the checks for this class, create a new set of BAD_FUNCTION_* rules in which the BAD_FUNCTION_REGEX setting matches the function or set of functions you want to check and the remaining rules match those in the other sets for this class.

To remove a function or set of functions from the checks for this class, edit the configuration file to comment out the corresponding set of BAD_FUNCTION_* rules.

The following configuration file parameters affect checks for this warning class.

BADFUNC.TEMP.GETTEMPFILENAME : Use of GetTempFileName

Summary

Properties

Resolution

Relevant Configuration File Parameters