Utility crash via unchecked table-name copy
Published Mar 16, 2023 · Updated Jul 9, 2026
Heap buffer overflow in Liblouis lou_trace 3.24.0 allows attackers to crash the utility using an oversized table name. The resolveSubtable function allocates a fixed-size tableFile buffer and copies or formats table, base, and search-path strings into it without first enforcing the buffer limit. Reachability requires control of a table-name argument, and the demonstrated consequence is termination of the lou_trace debugging process rather than a documented compromise of the host.
Summary
What happened
Heap buffer overflow in Liblouis lou_trace 3.24.0 allows attackers to crash the utility using an oversized table name. The resolveSubtable function allocates a fixed-size tableFile buffer and copies or formats table, base, and search-path strings into it without first enforcing the buffer limit. Reachability requires control of a table-name argument, and the demonstrated consequence is termination of the lou_trace debugging process rather than a documented compromise of the host.
The record
- CVE
- CVE-2023-26769
- Published
- Mar 16, 2023
- Updated
- Jul 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1499.004
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Mar 16, 2023CVE publishedPublication date reported by the CVE source.
- Jul 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- Oversized lou_trace table-name reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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