Code execution via malformed 3D model parsing
Published Jun 9, 2020 · Updated Aug 4, 2024
Memory corruption in Microsoft Office and Microsoft 365 Apps allows remote attackers to execute code through a crafted Office document. The shared 3D model parser trusts inconsistent cross-references in an embedded malformed GLB scene and copies mesh data with incorrect bounds. Exploitation requires a user to open the document, and successful code runs in that user's security context; the Preview Pane is not an attack vector.
Summary
What happened
Memory corruption in Microsoft Office and Microsoft 365 Apps allows remote attackers to execute code through a crafted Office document. The shared 3D model parser trusts inconsistent cross-references in an embedded malformed GLB scene and copies mesh data with incorrect bounds. Exploitation requires a user to open the document, and successful code runs in that user's security context; the Preview Pane is not an attack vector.
The record
- CVE
- CVE-2020-1321
- Published
- Jun 9, 2020
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Microsoft Office
- Classifications
- T1204.002, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 9, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2016 for Mac
- Affected versionversion=2019 for 32-bit editions
- Affected versionversion=2019 for 64-bit editions
- Affected versionversion=2019 for Mac
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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