BADFUNC.BO.GETS : Use of gets

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CodeSonar^® 9.2p0

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CodeSecure Inc

C and C++

Binaries

BADFUNC.BO.GETS : Use of gets

Summary

A use of gets(), _getts(), or _getws(), which are vulnerable to buffer overflows.

Properties

Class Name

Use of gets

Significance

style

Mnemonic

BADFUNC.BO.GETS

Categories

MisraC2025	MisraC2025:1.5	Obsolescent language features shall not be used
MisraC2023	MisraC2023:1.5	Obsolescent language features shall not be used
Misra2012	Misra2012:1.5	Obsolescent language features shall not be used
AUTOSARC++14	AUTOSARC++14:A1-1-1	All code shall conform to ISO/IEC 14882:2014 - Programming Language C++ and shall not use deprecated features.
	AUTOSARC++14:A5-2-5	An array or container shall not be accessed beyond its range.
MisraC++2023	MisraC++2023:30.0.1	The C Library input/output functions shall not be used
CWE	CWE:120	Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
	CWE:242	Use of Inherently Dangerous Function
CERT-C	CERT-C:API02-C	Functions that read or write to or from an array should take an argument to specify the source or target size
	CERT-C:STR31-C	Guarantee that storage for strings has sufficient space for character data and the null terminator
CERT-CPP	CERT-CPP:CTR52-CPP	Guarantee that library functions do not overflow
DISA-6r1	DISA-6r1:V-222612	The application must not be vulnerable to overflow attacks.
DISA-5r3	DISA-5r3:V-70277	The application must not be vulnerable to overflow attacks.
DISA-4r3	DISA-4r3:V-70277	The application must not be vulnerable to overflow attacks.
DISA-3r10	DISA-3r10:V-6165	The designer will ensure the application does not have buffer overflows, use functions known to be vulnerable to buffer overflows, and does not use signed values for memory allocation where permitted by the programming language.
OWASP-2017	OWASP-2017:A9	Using components with known vulnerabilities
OWASP-2021	OWASP-2021:A4	Insecure design
	OWASP-2021:A6	Vulnerable and outdated components
OWASP-2025	OWASP-2025:A03	Software Supply Chain Failures
	OWASP-2025:A06	Insecure Design

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 gets"

Resolution

Use fgets() or a C++ stream object instead.

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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