CVE-2021-34303
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 · uneditedA vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Tiff_Loader.dll library in affected applications lacks proper validation of user-supplied data when parsing TIFF files. This could result in an out of bounds read past the end of an allocated buffer. An attacker could leverage this vulnerability to leak information in the context of the current process. (ZDI-CAN-13198)
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 confidenceThe Tiff_Loader.dll library in JT2Go and Teamcenter Visualization fails to properly validate user-supplied data when parsing TIFF files, leading to an out-of-bounds read past the end of an allocated buffer. This allows an attacker to leak sensitive information from process memory by tricking a user into opening a maliciously crafted TIFF file.
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< 13.2.0< 13.2.0CVSS 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
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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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Identify installed productCheck if Siemens JT2Go or Teamcenter Visualization is installed on the system by reviewing installed programs or locating the application executable (JT2Go.exe or Teamcenter Visualization binaries)Affected if Either product is installed and the version is below 13.2.0
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Check product versionRight-click the executable (JT2Go.exe or the Teamcenter Visualization application), select Properties, and review the File Version or Product Version fieldAffected if The reported version number is lower than 13.2.0 (for example, 13.1.x, 13.0.x, or earlier)
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Locate Tiff_Loader.dllSearch for Tiff_Loader.dll within the product installation directory, typically found in the bin or application folder where the main executable residesAffected if Tiff_Loader.dll exists in the product directory and its file version is not the patched V13.2 release
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Verify TIFF processing capabilityOpen the application and confirm whether it can load or import TIFF image files, or check file association settings for .tiff/.tif extensionsAffected if The application is configured to process TIFF files and can be triggered to parse a user-supplied TIFF file
The environment is affected if JT2Go or Teamcenter Visualization is installed with a version lower than 13.2.0 and the vulnerable Tiff_Loader.dll is present, allowing a malicious TIFF file to trigger an out-of-bounds read.
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 data13.2.0
Upgrade JT2Go and Teamcenter Visualization to version V13.2 or later to obtain the patched Tiff_Loader.dll library that properly validates TIFF file data.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-34303 — 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-2021-34303 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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