Local denial of service via signedness error
Published Aug 11, 2025 · Updated Aug 12, 2025
Stack-based buffer overflow in LibTIFF tiffcrop 4.5.0 through 4.5.1 allows local users to crash the utility via a crafted TIFF file. In readSeparateStripsIntoBuffer, a negative TIFFReadEncodedStrip result is divided and cast to an unsigned row count before the read error is handled, producing an enormous value for later buffer processing. Exploitation requires local access and crafted TIFF processing, and the established consequence is interruption of the tiffcrop process.
Summary
What happened
Stack-based buffer overflow in LibTIFF tiffcrop 4.5.0 through 4.5.1 allows local users to crash the utility via a crafted TIFF file. In readSeparateStripsIntoBuffer, a negative TIFFReadEncodedStrip result is divided and cast to an unsigned row count before the read error is handled, producing an enormous value for later buffer processing. Exploitation requires local access and crafted TIFF processing, and the established consequence is interruption of the tiffcrop process.
The record
- CVE
- CVE-2025-8851
- Published
- Aug 11, 2025
- Updated
- Aug 12, 2025
- Vendor
- LibTIFF
- Product
- LibTIFF
- Classifications
- CWE-119, CWE-121
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2025CVE publishedPublication date reported by the CVE source.
- Aug 12, 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=4.5.0
- Affected versionversion=4.5.1
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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