CVE-2021-43279
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 · uneditedAn out-of-bounds write vulnerability exists in the U3D file reading procedure in Open Design Alliance PRC SDK before 2022.10. Crafted data in a U3D file can trigger a write past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.
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 confidenceAn out-of-bounds write vulnerability exists in the U3D file reading procedure of the Open Design Alliance PRC SDK versions prior to 2022.10. When parsing specially crafted U3D files, the SDK writes data past the end of an allocated buffer, leading to memory corruption that can be chained with other vulnerabilities for arbitrary code execution.
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< 2022.10CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:L/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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Identify ODA PRC SDK installationSearch for ODA PRC SDK libraries or components in your environment. Look for binaries, libraries, or SDK packages with 'PRC' or 'ODA' in the name, or check application dependencies for references to the Open Design Alliance PRC SDK.Affected if The ODA PRC SDK is present in the environment
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Determine PRC SDK versionExamine the version information of the installed PRC SDK by checking SDK DLLs, headers, version metadata, or library properties. Compare the installed version against the 2022.10 release from Open Design Alliance.Affected if The installed version is prior to 2022.10
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Verify U3D file parsing is in useInspect application configuration, code, or modules that handle U3D file format processing. Look for U3D-specific parsers, import routines, or conversion features that enable reading U3D files.Affected if U3D file parsing functionality is enabled or accessible in the application
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Check if U3D files are processedReview file processing workflows, upload mechanisms, or conversion pipelines to determine whether U3D files are accepted or processed by any system using the PRC SDK.Affected if The system processes or can process U3D files from any source
The environment is vulnerable if the ODA PRC SDK is installed with a version lower than 2022.10 and the system has U3D file parsing capability enabled or accessible.
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.
dbcve · scoped2022.10
Update to PRC SDK version 2022.10 or later to obtain the vendor patch. Alternatively, implement strict input validation on U3D files before processing and consider sandboxing or restricting file processing privileges to limit impact.
2022.10
- 1. Identify the current version of ODA PRC SDK being used in your application or system
- 2. Download the ODA PRC SDK version 2022.10 or later from the official Open Design Alliance website (www.opendesign.com)
- 3. Replace the existing PRC SDK libraries with the updated version 2022.10
- 4. Rebuild and recompile any applications that link against the PRC SDK
- 5. Test the application functionality to ensure the upgrade does not break existing features
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-43279 — 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-2021-43279 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
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