BADFUNC.RANDOM.RAND48 : Use of rand48 Function

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A use of a function from the rand48 family (see full list below). These functions do not provide sufficient randomness for secure applications.

Class Name

Use of rand48 Function

Significance

security

Mnemonic

BADFUNC.RANDOM.RAND48

Categories

CWE	CWE:327	Use of a Broken or Risky Cryptographic Algorithm
	CWE:332	Insufficient Entropy in PRNG
	CWE:334	Small Space of Random Values
	CWE:338	Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
	CWE:676	Use of Potentially Dangerous Function
DISA-6r1	DISA-6r1:V-222397	The application must implement cryptographic mechanisms to protect the integrity of remote access sessions.
	DISA-6r1:V-222570	The application must utilize FIPS-validated cryptographic modules when signing application components.
	DISA-6r1:V-222571	The application must utilize FIPS-validated cryptographic modules when generating cryptographic hashes.
	DISA-6r1:V-222572	The application must utilize FIPS-validated cryptographic modules when protecting unclassified information that requires cryptographic protection.
	DISA-6r1:V-222583	The application must use the Federal Information Processing Standard (FIPS) 140-2-validated cryptographic modules and random number generator if the application implements encryption, key exchange, digital signature, and hash functionality.
DISA-5r3	DISA-5r3:V-69259	The application must implement cryptographic mechanisms to protect the integrity of remote access sessions.
	DISA-5r3:V-70191	The application must utilize FIPS-validated cryptographic modules when signing application components.
	DISA-5r3:V-70193	The application must utilize FIPS-validated cryptographic modules when generating cryptographic hashes.
	DISA-5r3:V-70195	The application must utilize FIPS-validated cryptographic modules when protecting unclassified information that requires cryptographic protection.
	DISA-5r3:V-70217	The application must use the Federal Information Processing Standard (FIPS) 140-2-validated cryptographic modules and random number generator if the application implements encryption, key exchange, digital signature, and hash functionality.
DISA-4r3	DISA-4r3:V-69259	The application must implement cryptographic mechanisms to protect the integrity of remote access sessions.
	DISA-4r3:V-70191	The application must utilize FIPS-validated cryptographic modules when signing application components.
	DISA-4r3:V-70193	The application must utilize FIPS-validated cryptographic modules when generating cryptographic hashes.
	DISA-4r3:V-70195	The application must utilize FIPS-validated cryptographic modules when protecting unclassified information that requires cryptographic protection.
	DISA-4r3:V-70217	The application must use the Federal Information Processing Standard (FIPS) 140-2-validated cryptographic modules and random number generator if the application implements encryption, key exchange, digital signature, and hash functionality.
DISA-3r10	DISA-3r10:V-6137	The designer will ensure the application uses the Federal Information Processing Standard (FIPS) 140-2 validated cryptographic modules and random number generator if the application implements encryption, key exchange, digital signature, and hash functionality.
BSI	BSI:MetaRule
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 rand48 Function"

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

drand48()
erand48()
jrand48()
lcomg48()
lrand48()
mrand48()
nrand48()
seed48()
srand48()

Use a cryptographically secure random generator, and ensure that it is seeded with a truly random value.

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.RANDOM.RAND48 : Use of rand48 Function

Summary

Properties

Triggering Functions

Resolution

Relevant Configuration File Parameters