In cPanel before 82.0.18, Cpanel::Rand::Get can produce a predictable series of numbers (SEC-525).
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 |
|---|---|---|---|
| Cpanel | Cpanel | 77.9999.110 (including) | 78.0.43 (excluding) |
| Cpanel | Cpanel | 81.9999.242 (including) | 82.0.18 (excluding) |
| Cpanel | Cpanel | 83.9999.115 (including) | 84.0.10 (excluding) |
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.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/112.html
- https://cwe.mitre.org/data/definitions/485.html
- https://cwe.mitre.org/data/definitions/59.html