CVE-2013-0294

packet.py in pyrad before 2.1 uses weak random numbers to generate RADIUS authenticators and hash passwords, which makes it easier for remote attackers to obtain sensitive information via a brute force attack.

Weakness

The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

Affected Software

Name	Vendor	Start Version	End Version
Pyrad	Pyrad_project	*	2.1 (excluding)
Pyrad	Ubuntu	hardy	*
Pyrad	Ubuntu	lucid	*
Pyrad	Ubuntu	oneiric	*
Pyrad	Ubuntu	precise	*
Pyrad	Ubuntu	quantal	*
Pyrad	Ubuntu	raring	*
Pyrad	Ubuntu	saucy	*
Pyrad	Ubuntu	upstream	*
Pyrad	Ubuntu	utopic	*
Pyrad	Ubuntu	vivid	*
Pyrad	Ubuntu	wily	*

Potential Mitigations

Use a well-vetted algorithm that is currently considered to be strong by experts in the field, and select well-tested implementations with adequate length seeds.
In general, if a pseudo-random number generator is not advertised as being cryptographically secure, then it is probably a statistical PRNG and should not be used in security-sensitive contexts.
Pseudo-random number generators can produce predictable numbers if the generator is known and the seed can be guessed. A 256-bit seed is a good starting point for producing a “random enough” number.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2013-0294
CWE	https://cwe.mitre.org/data/definitions/330.html

Use of Insufficiently Random Values

Weakness

Affected Software

Potential Mitigations

References

CVE-2013-0294

Use of Insufficiently Random Values

Weakness

Affected Software

Potential Mitigations

Related Attack Patterns

References