Schneider Electric C-Bus Toolkit FileCommand Directory Traversal Remote Code Execution Vulnerability

December 15th, 2023
ZDI-23-1796 ZDI-CAN-21129

CVE ID

CVE-2023-5399

CVSS Score

9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Schneider Electric

Affected Products

C-Bus Toolkit

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Schneider Electric C-Bus Toolkit. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the FileCommand command. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of NETWORK SERVICE.

Additional Details

Schneider Electric has issued an update to correct this vulnerability. More details can be found at:
https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-06

Disclosure Timeline

  • 2023-07-13 - Vulnerability reported to vendor
  • 2023-12-15 - Coordinated public release of advisory

Credit

Anonymous

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