Description

Lightning Flow Scanner Vulnerable to Code Injection via Unsafe Use of new Function() in APIVersion Rule

Impact

The APIVersion rule uses new Function() to evaluate expression strings. A malicious crafted flow metadata file can cause arbitrary JavaScript execution during scanning. An attacker could execute arbitrary JavaScript during a scan by supplying a malicious expression within rule configuration or crafted flow metadata. This could compromise developer machines, CI runners, or editor environments.

Patches

The patch removes all uses of new Function() and replaces them with a safer parser. It now validates operators (>, >=, <, <=, ==`) and performs numeric comparisons without evaluating untrusted JavaScript.

version: core-v6.10.6, version vsx:: v2.4.4 version app:: v3.1.0

Work around

// --- Handle APIVersion rule separately to avoid unsafe-eval in the core library ---
      const apiVersionConfig = ruleConfig.rules.APIVersion;
      if (apiVersionConfig) {
        delete ruleConfig.rules.APIVersion;
      }

// Manually evaluate the APIVersion rule, if it was configured.
      if (apiVersionConfig) {...
Show more

Mitigation

Aliases

References