Interpreter crash via out-of-bounds integer coercion
Published Nov 8, 2022 · Updated May 1, 2025
Heap buffer overflow in PicoC 3.2.2 allows local users to crash the interpreter by supplying a crafted C script for execution. ExpressionCoerceUnsignedInteger reads four bytes past an 80-byte heap allocation while ExpressionParseFunctionCall processes a formatted-output argument. Exploitation requires execution of the crafted script, and the demonstrated consequence is an AddressSanitizer-detected interpreter abort rather than data disclosure or modification.
Summary
What happened
Heap buffer overflow in PicoC 3.2.2 allows local users to crash the interpreter by supplying a crafted C script for execution. ExpressionCoerceUnsignedInteger reads four bytes past an 80-byte heap allocation while ExpressionParseFunctionCall processes a formatted-output argument. Exploitation requires execution of the crafted script, and the demonstrated consequence is an AddressSanitizer-detected interpreter abort rather than data disclosure or modification.
The record
- CVE
- CVE-2022-44313
- Published
- Nov 8, 2022
- Updated
- May 1, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 8, 2022CVE publishedPublication date reported by the CVE source.
- May 1, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- ExpressionCoerceUnsignedInteger_heap_overflow.c.zipproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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