BADFUNC.CUSERID : Use of cuserid

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CodeSonar^® 9.2p0

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CodeSecure Inc

C and C++

Binaries

BADFUNC.CUSERID : Use of cuserid

Summary

A use of cuserid(). There are security concerns associated with the use of cuserid(), and it is deprecated on some systems.

Properties

Class Name

Use of cuserid

Significance

security

Mnemonic

BADFUNC.CUSERID

Categories

CWE	CWE:477	Use of Obsolete Function
	CWE:676	Use of Potentially Dangerous Function
	CWE:863	Incorrect Authorization
CERT-C	CERT-C:MSC24-C	Do not use deprecated or obsolescent functions
BSI	BSI:CUSERID	Use of cuserid
OWASP-2017	OWASP-2017:A5	Broken access control
OWASP-2021	OWASP-2021:A1	Broken access control
	OWASP-2021:A4	Insecure design
OWASP-2025	OWASP-2025:A01	Broken Access Control
	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 cuserid"

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

Resolution

Use getpwuid(), getuid(), getpwuid(), geteuid(), or getlogin() 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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