CVE-2021-43277
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 read 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 read 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 read vulnerability exists in the U3D file parsing component of Open Design Alliance PRC SDK versions prior to 2022.10. When processing crafted U3D files, the parser reads beyond the end of an allocated memory buffer, potentially exposing sensitive memory contents or enabling further exploitation.
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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Locate ODA PRC SDK installationSearch for files named 'OdaPrc' or 'PRC' in common installation directories such as C:\Program Files\Open Design Alliance or /usr/local/oda, or check your project's dependency manifest for OdaPrc libraries.Affected if The ODA PRC SDK is present in the environment.
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Determine installed PRC SDK versionCheck the version information of the OdaPrc library file (typically named OdaPrc.dll on Windows, libOdaPrc.so on Linux, or libOdaPrc.dylib on macOS). Right-click the file, select Properties, and inspect the File Version or Product Version field.Affected if The version number is lower than 2022.10 (for example, 2022.5, 2022.1, 2021.12, etc.).
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Identify applications using the PRC SDKReview application logs, documentation, or code that imports or links against the OdaPrc library to determine which software processes PRC or U3D files.Affected if Any application loads the OdaPrc library to handle PRC or U3D file formats.
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Verify U3D file processing is enabledCheck application configuration settings or runtime parameters for U3D import/enable_U3D parsing flags. Inspect file type registration where .u3d extensions are associated with the PRC SDK handler.Affected if U3D file parsing is enabled or applications accept .u3d file input.
If the ODA PRC SDK version is present and is lower than 2022.10, and the system processes U3D files, then the environment is affected by CVE-2021-43277.
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 the Open Design Alliance PRC SDK to version 2022.10 or later to obtain the patch for this vulnerability. Until then, avoid processing untrusted U3D files with affected SDK versions.
2022.10
- Identify the current version of the ODA PRC SDK being used in your application or system
- Obtain the fixed version 2022.10 or later of the ODA PRC SDK from the official Open Design Alliance source
- Replace the vulnerable SDK files with the updated version following standard library upgrade procedures
- Verify the upgrade was successful by checking the SDK version or build information
- Re-test the application's U3D file handling functionality to confirm the vulnerability is resolved
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-43277 — 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-2021-43277 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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- Version or environment caveats, and links to real fixes
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