Advisory Details

September 8th, 2023

Visualware MyConnection Server doPostUploadfiles Directory Traversal Remote Code Execution Vulnerability

ZDI-23-1396
ZDI-CAN-21612

CVE ID CVE-2023-42033
CVSS SCORE 7.2, (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Visualware
AFFECTED PRODUCTS MyConnection Server
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Visualware MyConnection Server. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the doPostUploadfiles method. 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 root.

ADDITIONAL DETAILS Visualware has issued an update to correct this vulnerability. More details can be found at:
https://myconnectionserver.visualware.com/support/security-advisories
DISCLOSURE TIMELINE
  • 2023-07-28 - Vulnerability reported to vendor
  • 2023-09-08 - Coordinated public release of advisory
CREDIT 06fe5fd2bc53027c4a3b7e395af0b850e7b8a044
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