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KiowareApplication

CVE-2024-3459

HIGH · 7.8 CVSS v3.1 Published 2024-05-14
Fix available
A fix is available. Upgrade to after 8.34 or later.
See remediation →
80/100
Remediation priority · High
Zero-click

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 · unedited
KioWare for Windows (versions all through 8.34) allows to escape the environment by downloading PDF files, which then by default are opened in an external PDF viewer. By using built-in functions of that viewer it is possible to launch a web browser, search through local files and, subsequently, launch any program with user privileges.

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 confidence

KioWare for Windows (through version 8.34) contains a kiosk escape vulnerability where downloading PDF files causes them to open in an external PDF viewer by default. This external viewer can be leveraged to launch a web browser, search local files, and execute arbitrary programs with the current user's privileges, effectively breaking out of the kiosk lockdown.

MitigationRestrict PDF handling to an internal or sandboxed viewer that blocks external application launches, or disable PDF downloads entirely in the kiosk configuration.

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
KiowareApplication
Affected:<= 8.34

CVSS 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
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed KioWare version
    Open Windows Settings > Apps & Features (or use 'appwiz.cpl'), locate KioWare for Windows in the installed programs list, and note the version number displayed. Alternatively, check the program's About or Help dialog within the KioWare application.
    Affected if The installed version is 8.34 or any earlier version (e.g., 8.33, 8.32, etc.).
  2. Verify PDF download capability is enabled
    Access the KioWare configuration settings (typically via the KioWare Server management interface or configuration file), locate the settings governing file downloads or PDF handling, and confirm whether PDF downloads are permitted.
    Affected if PDF downloads are allowed or enabled in the kiosk configuration.
  3. Confirm external PDF viewer is in use
    In the KioWare configuration, examine the PDF handler or file type associations settings. Determine whether PDFs are set to open in the default Windows/system PDF viewer (which is external) or in a built-in/internal viewer.
    Affected if PDFs are configured to open using an external application or the system's default PDF handler rather than an internal or sandboxed viewer.
  4. Test PDF-based escape path
    Within the kiosk session, attempt to download a PDF file and observe what happens when it is opened. Attempt to use any features available in the opened PDF viewer (such as opening hyperlinks, file browser, or external links) to determine if they can launch external applications or access system resources.
    Affected if The PDF opens in an external viewer that allows launching web browsers, searching local files, or executing programs with the current user's privileges.

A user is affected if KioWare version 8.34 or earlier is installed with PDF downloads enabled and configured to use an external PDF viewer that can break out of the kiosk lockdown.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to a release after 8.34
Interim mitigation

Restrict PDF handling to an internal or sandboxed viewer that blocks external application launches, or disable PDF downloads entirely in the kiosk configuration.

Recommended fix Moderate confidence

KioWare for Windows version > 8.34 (latest stable release)

  1. 1. Check the current installed version of KioWare for Windows by accessing the About or Help section within the application
  2. 2. Navigate to the official KioWare website at www.kioware.com to download the latest version
  3. 3. Download the most recent stable release of KioWare for Windows (version higher than 8.34)
  4. 4. Close any running instances of KioWare before upgrading
  5. 5. Run the installer with appropriate administrative privileges
  6. 6. Follow the installation wizard prompts to complete the upgrade
  7. 7. After installation, verify the new version number matches the latest available release
  8. 8. Test the PDF handling functionality to confirm the environment escape vulnerability is remediated
Caveat Upgrade should be routine but test any custom integrations or configurations after applying

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Kioware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-3459 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data