Code execution via unbounded vertex-comment scan
Published May 28, 2024 · Updated Feb 13, 2025
Stack-based buffer overflow in libigl 2.4.0 and 2.5.0 allows local users to execute code when a crafted OFF file is processed. The readOFF vertex parser passes an unbounded %[^ ] conversion to fscanf for a 1,000-byte stack comment buffer, so a long comment without a newline overwrites the stack. Exploitation requires a host application to process the malicious geometry file and user interaction; the demonstrated result is a process abort, while code execution is the stated upper bound.
Summary
What happened
Stack-based buffer overflow in libigl 2.4.0 and 2.5.0 allows local users to execute code when a crafted OFF file is processed. The readOFF vertex parser passes an unbounded %[^ ] conversion to fscanf for a 1,000-byte stack comment buffer, so a long comment without a newline overwrites the stack. Exploitation requires a host application to process the malicious geometry file and user interaction; the demonstrated result is a process abort, while code execution is the stated upper bound.
The record
- CVE
- CVE-2023-35953
- Published
- May 28, 2024
- Updated
- Feb 13, 2025
- Vendor
- libigl
- Product
- libigl
- Classifications
- CWE-121, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 28, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.4.0
- Affected versionversion=2.5.0
- Affected versionversion=v2.4.0
- Affected versionversion=v2.5.0
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
- Vertices-comment stack-overflow testcaseproof of concept · demonstrated
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Technologies
Your stack
See the directory against your own environment.
Your stack
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