Process-memory disclosure via unchecked OBJ facet indices
Published Apr 13, 2021 · Updated Aug 4, 2024
Out-of-bounds read in Slic3r libslic3r 1.3.0 and commit 92abbc42 allows attackers to disclose process memory via a crafted OBJ file. TriangleMesh::TriangleMesh uses attacker-controlled OBJ facet indices to index the points vector without validating that each index is within bounds. Processing the file is the reachability gate; the resulting arbitrary out-of-range read can expose Slic3r process data, while the demonstrated invalid access terminates processing.
Summary
What happened
Out-of-bounds read in Slic3r libslic3r 1.3.0 and commit 92abbc42 allows attackers to disclose process memory via a crafted OBJ file. TriangleMesh::TriangleMesh uses attacker-controlled OBJ facet indices to index the points vector without validating that each index is within bounds. Processing the file is the reachability gate; the resulting arbitrary out-of-range read can expose Slic3r process data, while the demonstrated invalid access terminates processing.
The record
- CVE
- CVE-2020-28590
- Published
- Apr 13, 2021
- Updated
- Aug 4, 2024
- Vendor
- Alessandro Ranellucci
- Product
- Slic3r
- Classifications
- CWE-125, CWE-20
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 13, 2021CVE 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=Slic3r libslic3r 1.3.0 , Slic3r libslic3r Master Commit 92abbc42
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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.
Public exploit references
- Talos crafted OBJ crash demonstrationproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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