MGASA-2017-0206

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MGASA-2017-0206

Summary: Updated jbig2dec packages fix security vulnerability

Details: Multiple security issues have been found in the JBIG2 decoder library, which may lead to lead to denial of service or the execution of arbitrary code if a malformed image file (usually embedded in a PDF document) is opened (CVE-2016-9601). Artifex jbig2dec has a heap-based buffer over-read leading to denial of service (application crash) because of an integer overflow in the jbig2_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 file (CVE-2017-7885). Artifex jbig2dec allows out-of-bounds writes because of an integer overflow in the jbig2_build_huffman_table function in jbig2_huffman.c during operations on a crafted JBIG2 file, leading to a denial of service (application crash) or possibly execution of arbitrary code (CVE-2017-7975). Artifex jbig2dec allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash) (CVE-2017-7976).

References: https://advisories.mageia.org/MGASA-2017-0206.html, https://bugs.mageia.org/show_bug.cgi?id=20565, https://www.debian.org/security/2017/dsa-3817, https://lists.fedoraproject.org/archives/list/[email protected]/thread/XWQQMCDLDOZ535O3IKFQZE3VPCWC3HWH/