CVE-2023-42034 Visualware MyConnection Server doRTAAccessCTConfig Cross-Site Scripting Authentication Bypass Vulnerability

High 8.8 Published 3 May 2024 Updated 2 Aug 2024

Remote attackers can bypass authentication via XSS in MyConnection Server, potentially leading to account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-42034?

CVE-2023-42034 is a high-severity cross-site scripting vulnerability in Visualware MyConnection Server, published on 3 May 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Visualware MyConnection Server doRTAAccessCTConfig Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Visualware MyConnection Server. Minimal user interaction is required to exploit this vulnerability.

The specific flaw exists within the doRTAAccessCTConfig method. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-21613.

Weakness: CWE-79

Which versions are affected by CVE-2023-42034?

It affects 1 product.

Products include Visualware Myconnection Server.

How do I fix CVE-2023-42034?

No fix has been published for CVE-2023-42034 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-42034 being exploited?

There is no known exploitation of CVE-2023-42034 in the wild and no public exploit code.

Sources

Also known as GHSA-2wqr-hc5g-8c36.