Grassroots DICOM (GDCM) is a C++ library for processing DICOM medical images. It provides routines to view and manipulate a wide range of image formats and can be accessed through many popular programming languages like Python, C#, Java and PHP. GDCM versions 2.6.0 and 2.6.1 (and possibly previous versions) are prone to an out-of-bounds read vulnerability due to missing checks. The vulnerability occurs during the decoding of JPEG-LS images when the dimensions of the embedded JPEG-LS image (as specified in the JPEG headers) are smaller than the ones of the selected region (set by gdcm::ImageRegionReader::SetRegion and usually based on DICOM header values). More information about this vulnerability can be found at http://ift.tt/1l1ihLF The GDCM project has released version 2.6.2 that addresses this issue. It is advised to upgrade all GDCM installations to the latest stable release. Disclosure Timeline
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