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Message-ID: <569364EE.6010709@census-labs.com> Date: Mon, 11 Jan 2016 10:16:46 +0200 From: Stelios Tsampas <stelios@...sus-labs.com> To: oss-security@...ts.openwall.com Cc: fulldisclosure@...lists.org, bugtraq@...urityfocus.com Subject: CVE-2015-8397: GDCM out-of-bounds read in JPEGLSCodec::DecodeExtent 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://census-labs.com/news/2016/01/11/gdcm-out-bounds-read-jpeglscodec-decodeextent/ 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 ------------------- CVE assignment: December 2nd, 2015 Vendor Contact: December 4th, 2015 Vendor Patch Release: December 23rd, 2015 Public Disclosure: January 11th, 2016 Regards, Stelios Tsampas IT Security Researcher CENSUS S.A.
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