CVE-2023-42034
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedVisualware 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceVisualware MyConnection Server contains a cross-site scripting vulnerability in the doRTAAccessCTConfig method that allows injection of arbitrary script through unsanitized user input. This XSS can be leveraged to bypass authentication mechanisms on the system, enabling remote attackers to gain unauthorized access with minimal user interaction.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 11.3cCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Visualware MyConnection Server is installedLocate the MyConnection Server installation directory or check for running services related to Visualware MyConnection Server on the systemAffected if The product is present on the system
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Verify the installed version is 11.3cCheck the version of Visualware MyConnection Server using the product's built-in version check, About page, or installation metadata - compare against the affected version 11.3cAffected if The installed version is exactly 11.3c (the equals sign indicates this specific version only)
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Identify if the doRTAAccessCTConfig method is exposedCheck the web application's accessible endpoints or route configuration to determine if the doRTAAccessCTConfig method is publicly or internally accessibleAffected if The doRTAAccessCTConfig method is reachable without proper authentication or input sanitization in place
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Confirm the web interface accepts unsanitized inputIf accessible, test the doRTAAccessCTConfig endpoint with script payload in the user input field to observe whether the application reflects unsanitized input in the responseAffected if User-supplied input in this method is reflected in the response without encoding or sanitization
The environment is affected only if Visualware MyConnection Server version 11.3c is installed AND the doRTAAccessCTConfig method is accessible with unsanitized user input handling.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement proper input validation and sanitization on all user-supplied data within the doRTAAccessCTConfig method, and review/remediate the authentication bypass vector that the injected script can exploit.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-42034 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-42034 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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