Fuji Electric V-Server Lite VPR File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

April 9th, 2020
ZDI-20-453 ZDI-CAN-10138

CVE ID

CVSS Score

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

Affected Vendors

Fuji Electric

Affected Products

V-Server Lite

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fuji Electric V-Server Lite. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of VPR files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

Fixed in V-Server 4.0.7.0 and Lite V4.0.9.0.


Disclosure Timeline

  • 2020-02-28 - Vulnerability reported to vendor
  • 2020-04-09 - Coordinated public release of advisory

Credit

kimiya

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