Code execution via concat_ws integer overflow
Published Apr 14, 2025 · Updated May 27, 2025
Heap-buffer overflow in SQLite 3.44.0 through 3.49.0 allows attackers to execute arbitrary code via an enormous concat_ws() separator. In src/func.c, concat_ws() calculates the output allocation with a 32-bit product that wraps, then copies the full result beyond the undersized heap buffer. Reachability requires control of the function’s first argument, a separator larger than 2 MB, many arguments, and an application that executes attacker-controlled SQL.
Summary
What happened
Heap-buffer overflow in SQLite 3.44.0 through 3.49.0 allows attackers to execute arbitrary code via an enormous concat_ws() separator. In src/func.c, concat_ws() calculates the output allocation with a 32-bit product that wraps, then copies the full result beyond the undersized heap buffer. Reachability requires control of the function’s first argument, a separator larger than 2 MB, many arguments, and an application that executes attacker-controlled SQL.
The record
- CVE
- CVE-2025-3277
- Published
- Apr 14, 2025
- Updated
- May 27, 2025
- Vendor
- SQLite
- Product
- SQLite
- Classifications
- CWE-122
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 14, 2025CVE publishedPublication date reported by the CVE source.
- May 27, 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?
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- Affected versionversion=< 3.49.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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