Code execution via unchecked Nef object indexes
Published Apr 18, 2022 · Updated Apr 15, 2025
Out-of-bounds read in CGAL 5.1.1 Nef polygon parsing allows attackers to execute code through a specially crafted malformed file. SNC_io_parser::read_sedge() reads edge-reference indexes from the file and uses them to access vectors without bounds checks, assigning arbitrary memory as object members. A consuming application must parse attacker-supplied Nef data; successful exploitation confuses object types and executes code in that application's context.
Summary
What happened
Out-of-bounds read in CGAL 5.1.1 Nef polygon parsing allows attackers to execute code through a specially crafted malformed file. SNC_io_parser::read_sedge() reads edge-reference indexes from the file and uses them to access vectors without bounds checks, assigning arbitrary memory as object members. A consuming application must parse attacker-supplied Nef data; successful exploitation confuses object types and executes code in that application's context.
The record
- CVE
- CVE-2020-28629
- Published
- Apr 18, 2022
- Updated
- Apr 15, 2025
- Vendor
- CGAL Project
- Product
- CGAL
- Classifications
- CWE-129, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 18, 2022CVE publishedPublication date reported by the CVE source.
- Apr 15, 2025Record 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=CGAL-5.1.1
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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