VNX-243 – Creation of chroot Jail Without Changing Working Directory

Overview

VNX-243 maps to CWE-243: Creation of chroot Jail Without Changing Working Directory. Detects source patterns associated with CWE-243 (Creation of chroot Jail Without Changing Working Directory). Each finding should be manually reviewed for exploitability in context.

Severity: Medium | CWE: CWE-243 | Languages: c, cpp

Why This Matters

This weakness class (Creation of chroot Jail Without Changing Working Directory) creates a concrete exploit surface: the rule searches for the concrete source-level patterns most commonly associated with CWE-243 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 'chroot(' pattern
chroot(

Remediation

  1. Review each flagged line and determine whether the pattern represents a real instance of CWE-243 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-243 comment on the line.
  4. Ensure equivalent test coverage exists to prevent regression.

References