Code execution via unchecked Nef vertex index
Published Apr 18, 2022 · Updated Sep 17, 2024
Out-of-bounds read in CGAL 5.1.1 Nef polygon parsing allows attackers to execute code by supplying a malformed file. In Nef_S2/SNC_io_parser.h, read_vertex() uses an unvalidated vertex reference with vh->sfaces_last(), causing an out-of-bounds read and type confusion. Reachability requires a consuming application to parse the supplied Nef polygon file; successful exploitation 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 by supplying a malformed file. In Nef_S2/SNC_io_parser.h, read_vertex() uses an unvalidated vertex reference with vh->sfaces_last(), causing an out-of-bounds read and type confusion. Reachability requires a consuming application to parse the supplied Nef polygon file; successful exploitation executes code in that application's context.
The record
- CVE
- CVE-2020-28617
- Published
- Apr 18, 2022
- Updated
- Sep 17, 2024
- Vendor
- CGAL Project
- Product
- CGAL
- Classifications
- CWE-125, CWE-129, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 18, 2022CVE publishedPublication date reported by the CVE source.
- Sep 17, 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=CGAL-5.1.1
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.
Weakness, pattern, technique
Public exploit references
- Talos malformed Nef polygon exploitproof of concept · unverified
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Technologies
Your stack
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Your stack
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