BADFUNC.PATH.LOADLIBRARY : Use of LoadLibrary

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A use of LoadLibrary() or LoadLibraryEx(), which are vulnerable to path spoofing if the file name argument is not securely specified.

Class Name

Use of LoadLibrary

Significance

security

Mnemonic

BADFUNC.PATH.LOADLIBRARY

Categories

CWE	CWE:676	Use of Potentially Dangerous Function
CERT-C	CERT-C:WIN00-C	Be specific when dynamically loading libraries
DISA-3r10	DISA-3r10:V-6157	The designer will ensure the application does not contain invalid URL or path references.
BSI	BSI:LoadLibrary	Use of LoadLibrary
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OWASP-2021	OWASP-2021:A6	Vulnerable and outdated components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 disabled by default. To enable them, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += allow class="Use of LoadLibrary"

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

HMODULE

LoadLibrary(LPCTSTR lpFileName)

HMODULE

LoadLibraryEx(

LPCTSTR lpFileName,
HANDLE hFile,
DWORD dwFlags)

When you see a Use of LoadLibrary warning, make sure that the file name argument lpFileName to LoadLibrary() or LoadLibraryEx() is a fully-specified path name from a trusted source. The path name should include the file extension: if the file has no extension, specify the name with a trailing ".".

Additionally, make sure that the use does not occur within DllMain().

Once you are satisfied that these conditions hold, 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.PATH.LOADLIBRARY : Use of LoadLibrary

Summary

Properties

Resolution

Relevant Configuration File Parameters

HMODULE	LoadLibrary(LPCTSTR lpFileName)
HMODULE	LoadLibraryEx( LPCTSTR lpFileName, HANDLE hFile, DWORD dwFlags)