CS-Cart add-on "Twigmo" vulnerable to PHP object injection


CS-Cart add-on "Twigmo" contains a PHP object injection vulnerability due to a flaw where untrusted input values are unserialized.

ASAI Ken reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 6.0 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 6.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: Single Instance
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

Simtech Ltd.
  • Twigmo bundled with CS-Cart v4.3.9 and earlier
  • Twigmo bundled with CS-Cart Multi-Vendor v4.3.9 and earlier

Twigmo is developed/distributed by Simtech Ltd. A localized version for Japan is distributed by Frogman Office Inc. A Japanese advisory has been released by Frogman Office Inc. on September 14, 2016. Simtech Ltd. will release an advisory at a later time.

A remote attacker may execute arbitrary PHP code.

[Edit twigmo.php]
This vulnerability can be addressed by deleting or commenting out the following part of the "Twigmo" add-on's file app/addons/twigmo/controllers/backend/twigmo.php:

$_REQUEST['status'] = unserialize($_REQUEST['status']);
Vendor Information

Simtech Ltd.
CWE (What is CWE?)

  1. Improper Input Validation(CWE-20) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2016-4862

  1. JVN : JVN#55389065
  2. National Vulnerability Database (NVD) : CVE-2016-4862
Revision History

  • [2016/09/14]
      Web page was published
      References : Content was added