#VU80602 Path traversal in MyConnection Server - CVE-2023-42033

Vulnerability identifier: #VU80602

Vulnerability risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-42033

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MyConnection Server
Server applications / Other server solutions

Vendor: Visualware

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the doPostUploadfiles method. A remote administrator can send a specially crafted HTTP request and read arbitrary files on the system, leading to arbitrary code execution.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MyConnection Server: 11.3c

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External links
https://www.zerodayinitiative.com/advisories/ZDI-23-1396/
https://myconnectionserver.visualware.com/support/security-advisories

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.