VNX-649 – Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking

Overview

VNX-649 maps to CWE-649: Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking. Detects source patterns associated with CWE-649 (Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking). Each finding should be manually reviewed for exploitability in context.

Severity: Medium | CWE: CWE-649 | Languages: node, python

Why This Matters

This weakness class (Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking) creates a concrete exploit surface: the rule searches for the concrete source-level patterns most commonly associated with CWE-649 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 'base64.decode' pattern
base64.decode

Remediation

  1. Review each flagged line and determine whether the pattern represents a real instance of CWE-649 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-649 comment on the line.
  4. Ensure equivalent test coverage exists to prevent regression.

References