Code execution via unchecked Nef volume index
Published Apr 18, 2022 · Updated Sep 16, 2024
Out-of-bounds read in CGAL 5.1.1 Nef polygon parsing allows attackers to execute code by supplying a malformed polygon file. SNC_io_parser::read_volume() uses an unchecked file-supplied index to read SFace_of and append the resulting object to shell_entry_objects(), enabling type confusion when the invalid object is later dereferenced. The consuming application must parse attacker-supplied Nef data; successful exploitation runs code in that application process.
Summary
What happened
Out-of-bounds read in CGAL 5.1.1 Nef polygon parsing allows attackers to execute code by supplying a malformed polygon file. SNC_io_parser::read_volume() uses an unchecked file-supplied index to read SFace_of and append the resulting object to shell_entry_objects(), enabling type confusion when the invalid object is later dereferenced. The consuming application must parse attacker-supplied Nef data; successful exploitation runs code in that application process.
The record
- CVE
- CVE-2020-28627
- Published
- Apr 18, 2022
- Updated
- Sep 16, 2024
- Vendor
- CGAL Project
- Product
- CGAL
- Classifications
- CWE-129, CWE-125, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 18, 2022CVE publishedPublication date reported by the CVE source.
- Sep 16, 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?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
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Technologies
Your stack
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Your stack
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