VNX-1241 – Use of Predictable Algorithm in Random Number Generator

Overview

VNX-1241 maps to CWE-1241: Use of Predictable Algorithm in Random Number Generator. Detects source patterns associated with CWE-1241 (Use of Predictable Algorithm in Random Number Generator). Each finding should be manually reviewed for exploitability in context.

Severity: Medium | CWE: CWE-1241 | Languages: java

Why This Matters

This weakness class (Use of Predictable Algorithm in Random Number Generator) creates a concrete exploit surface: the rule searches for the concrete source-level patterns most commonly associated with CWE-1241 and surfaces them for review. Each finding should be evaluated in context — the rule catches the pattern, not the context.

What Gets Flagged

// FLAGGED: contains 'Random(' pattern
Random(

Remediation

  1. Review each flagged line and determine whether the pattern represents a real instance of CWE-1241 or a false positive.
  2. Replace the flagged construct with a documented safe alternative appropriate to your language and framework.
  3. For confirmed false positives, add a # vulnetix-ignore: VNX-1241 comment on the line.
  4. Ensure equivalent test coverage exists to prevent regression.

References