Interpreter crash via unchecked UTF-8 copy
Published Aug 14, 2023 · Updated Oct 9, 2024
Heap-based buffer overflow in libboron in Boron 2.0.8 allows context-dependent attackers to crash the interpreter via a malformed script. In string.c, ur_strInitUtf8 allocates a string buffer that is too small and then copies UTF-8 input one byte beyond the heap allocation. Execution of a crafted script is required; the published reproducer demonstrates heap corruption and process abort, not arbitrary code execution.
Summary
What happened
Heap-based buffer overflow in libboron in Boron 2.0.8 allows context-dependent attackers to crash the interpreter via a malformed script. In string.c, ur_strInitUtf8 allocates a string buffer that is too small and then copies UTF-8 input one byte beyond the heap allocation. Execution of a crafted script is required; the published reproducer demonstrates heap corruption and process abort, not arbitrary code execution.
The record
- CVE
- CVE-2023-40295
- Published
- Aug 14, 2023
- Updated
- Oct 9, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 14, 2023CVE publishedPublication date reported by the CVE source.
- Oct 9, 2024Record updatedLatest update available in the CVE record.
Exploitability
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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
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Public exploit references
- ur_strInitUtf8_overflow.b reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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