Heap-based Buffer Overflow in VTK vtk-dicom

Executive Summary

This vulnerability is a heap-based buffer overflow in the vtkDICOMItem::NewDataElement function of the vtk-dicom component in vtk. A buffer overflow occurs when more data is written to a buffer than it can hold, potentially leading to memory corruption.

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Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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Detection Guidance

This vulnerability is triggered by processing a specially crafted DICOM file that causes heap corruption and results in a SIGABRT error with a "corrupted size vs.prev_size" message in the glibc malloc implementation.

Detection can involve monitoring for application crashes or abnormal termination signals (SIGABRT) when handling DICOM files, especially errors related to heap corruption.

Specific commands to detect this vulnerability are not provided in the available resources.

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Mitigation Strategies

The available information does not specify immediate mitigation steps such as patches, configuration changes, or workarounds.

General best practices would include avoiding processing untrusted or specially crafted DICOM files with the vulnerable vtk-dicom library version 9.5.2 until a fix is applied.

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Impact Analysis

The vulnerability has a high severity with a CVSS base score of 8.1, indicating it can have a significant impact. It can lead to complete compromise of confidentiality, integrity, and availability of the affected system since it allows remote attackers to execute code or cause denial of service due to the heap-based buffer overflow.

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