Service interruption via SQL printf stack overwrite
Published May 24, 2020 · Updated Aug 4, 2024
Stack-based buffer overflow in SQLite 3.8.3 through 3.32.0 allows local users to interrupt applications via crafted SQL. The SQL printf() path subtracts a negative exponent from attacker-selected precision without overflow checking, makes the size calculation negative, and writes more than two billion bytes past its stack conversion buffer. Reachability requires an application to permit untrusted arbitrary SQL; SQLite reports denial of service only, with no known control-flow redirection or higher impact.
Summary
What happened
Stack-based buffer overflow in SQLite 3.8.3 through 3.32.0 allows local users to interrupt applications via crafted SQL. The SQL printf() path subtracts a negative exponent from attacker-selected precision without overflow checking, makes the size calculation negative, and writes more than two billion bytes past its stack conversion buffer. Reachability requires an application to permit untrusted arbitrary SQL; SQLite reports denial of service only, with no known control-flow redirection or higher impact.
The record
- CVE
- CVE-2020-13434
- Published
- May 24, 2020
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-190, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 24, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
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Public exploit references
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Technologies
Your stack
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Your stack
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