Code execution via unchecked Enhanced CT dimensions
Published Jun 28, 2024 · Updated Aug 2, 2024
Buffer overflow in DCMTK 3.6.8 allows remote authenticated users to execute arbitrary code through attacker-controlled Enhanced CT dimensions. EctEnhancedCT::WriteVisitor multiplies 16-bit row and column values as an int and copies unvalidated frame bytes with memcpy, allowing the allocation calculation to overflow. Exploitation requires control of the dimensions and frame pixel data passed by a calling application, and the resulting out-of-bounds access can corrupt process memory.
Summary
What happened
Buffer overflow in DCMTK 3.6.8 allows remote authenticated users to execute arbitrary code through attacker-controlled Enhanced CT dimensions. EctEnhancedCT::WriteVisitor multiplies 16-bit row and column values as an int and copies unvalidated frame bytes with memcpy, allowing the allocation calculation to overflow. Exploitation requires control of the dimensions and frame pixel data passed by a calling application, and the resulting out-of-bounds access can corrupt process memory.
The record
- CVE
- CVE-2024-27628
- Published
- Jun 28, 2024
- Updated
- Aug 2, 2024
- Vendor
- OFFIS e.V.
- Product
- DCMTK
- Classifications
- CWE-120
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 28, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 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=3.6.8
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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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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