Code execution via wrapped PNG width allocation
Published Feb 14, 2020 · Updated Aug 4, 2024
Out-of-bounds write in Accusoft ImageGear 19.5.0 allows attackers to execute code when a host application loads a crafted PNG file. The pngread parser derives an eight-byte allocation from the attacker-controlled IHDR width after integer wraparound, then writes at least 12 bytes without checking the buffer capacity. Exploitation requires delivery of a malformed PNG to an application that passes it to IG_load_file, and successful memory corruption executes code in that host process.
Summary
What happened
Out-of-bounds write in Accusoft ImageGear 19.5.0 allows attackers to execute code when a host application loads a crafted PNG file. The pngread parser derives an eight-byte allocation from the attacker-controlled IHDR width after integer wraparound, then writes at least 12 bytes without checking the buffer capacity. Exploitation requires delivery of a malformed PNG to an application that passes it to IG_load_file, and successful memory corruption executes code in that host process.
The record
- CVE
- CVE-2020-6068
- Published
- Feb 14, 2020
- Updated
- Aug 4, 2024
- Vendor
- Accusoft
- Product
- ImageGear
- Classifications
- CWE-787, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 14, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record 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=Accusoft ImageGear 19.5.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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