BADFUNC.T_OPEN : Use of t

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CodeSonar^® 9.2p0

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CodeSecure Inc

C and C++

Binaries

BADFUNC.T_OPEN : Use of t_open

Summary

A use of t_open(), which requires that certain precautions be taken.

Properties

Class Name

Use of t_open

Significance

security

Mnemonic

BADFUNC.T_OPEN

Categories

CWE	CWE:676	Use of Potentially Dangerous Function
DISA-3r10	DISA-3r10:V-6157	The designer will ensure the application does not contain invalid URL or path references.
BSI	BSI:T_Open	Use of t_open
OWASP-2021	OWASP-2021:A4	Insecure design
OWASP-2025	OWASP-2025:A06	Insecure Design

Availability

Available for C and C++.

Enabling

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

WARNING_FILTER += allow class="Use of t_open"

To enable all BSI-related classes, including all BSI-specific BADFUNC classes, use the bsi configuration preset.

Resolution

Make sure that the file name argument is a literal string or obtained from a trusted source, and that the transport endpoint is not vulnerable to tampering. If so, you can change the warning state to Suppressed.

Relevant Configuration File Parameters

This class is implemented using a BAD_FUNCTION_* rule set in the general template configuration file.

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.

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