Arbitrary code execution via DGN length overflow
Published Feb 18, 2022 · Updated Aug 4, 2024
Stack-based buffer overflow in Bentley View 10.15.0.75 allows remote attackers to execute arbitrary code via a malicious DGN file. The DGN parser copies attacker-controlled length data into a stack buffer without validating the length, corrupting process memory. Exploitation requires a user to visit a malicious page or open the crafted file; code runs with the viewer's process privileges.
Summary
What happened
Stack-based buffer overflow in Bentley View 10.15.0.75 allows remote attackers to execute arbitrary code via a malicious DGN file. The DGN parser copies attacker-controlled length data into a stack buffer without validating the length, corrupting process memory. Exploitation requires a user to visit a malicious page or open the crafted file; code runs with the viewer's process privileges.
The record
- CVE
- CVE-2021-46643
- Published
- Feb 18, 2022
- Updated
- Aug 4, 2024
- Vendor
- Bentley Systems
- Product
- Bentley View
- Classifications
- CWE-121, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 18, 2022CVE 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
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Is a vulnerable build present?
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- Affected versionversion=10.15.0.75
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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