{"id":797,"date":"2016-10-23T09:54:47","date_gmt":"2016-10-23T07:54:47","guid":{"rendered":"http:\/\/blogs.gentoo.org\/ago\/?p=797"},"modified":"2017-03-13T12:36:51","modified_gmt":"2017-03-13T10:36:51","slug":"jasper-null-pointer-dereference-in-jp2_colr_destroy-jp2_cod-c-incomplete-fix-for-cve-2016-8887","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/ago\/2016\/10\/23\/jasper-null-pointer-dereference-in-jp2_colr_destroy-jp2_cod-c-incomplete-fix-for-cve-2016-8887\/","title":{"rendered":"jasper: NULL pointer dereference in jp2_colr_destroy (jp2_cod.c) (incomplete fix for CVE-2016-8887)"},"content":{"rendered":"<p><strong>Description<\/strong>:<br \/>\n<a href=\"http:\/\/www.ece.uvic.ca\/~frodo\/jasper\/\">jasper<\/a> is an open-source initiative to provide a free software-based reference implementation of the codec specified in the JPEG-2000 Part-1 standard.<\/p>\n<p>Another round of fuzzing on an updated version (1.900.10) revealed that the NULL pointer access identified as CVE-2016-8887 which upstream declared to be fixed in the version 1.900.10 is still here.<\/p>\n<p>The complete ASan output:<\/p>\n<pre><font size=\"2\"># imginfo -f $FILE\r\nASAN:DEADLYSIGNAL\r\n=================================================================\r\n==20885==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x00000041defd bp 0xbebebebebebebebe sp 0x7ffc4e4a4550 T0)\r\n    #0 0x41defc in atomic_compare_exchange_strong \/var\/tmp\/portage\/sys-devel\/llvm-3.8.1-r2\/work\/llvm-3.8.1.src\/projects\/compiler-rt\/lib\/asan\/..\/sanitizer_common\/sanitizer_atomic_clang.h:81\r\n    #1 0x41defc in __asan::Allocator::AtomicallySetQuarantineFlag(__asan::AsanChunk*, void*, __sanitizer::BufferedStackTrace*) \/var\/tmp\/portage\/sys-devel\/llvm-3.8.1-r2\/work\/llvm-3.8.1.src\/projects\/compiler-rt\/lib\/asan\/asan_allocator.cc:465\r\n    #2 0x41defc in __asan::Allocator::Deallocate(void*, unsigned long, __sanitizer::BufferedStackTrace*, __asan::AllocType) \/var\/tmp\/portage\/sys-devel\/llvm-3.8.1-r2\/work\/llvm-3.8.1.src\/projects\/compiler-rt\/lib\/asan\/asan_allocator.cc:525\r\n    #3 0x41defc in __asan::asan_free(void*, __sanitizer::BufferedStackTrace*, __asan::AllocType) \/var\/tmp\/portage\/sys-devel\/llvm-3.8.1-r2\/work\/llvm-3.8.1.src\/projects\/compiler-rt\/lib\/asan\/asan_allocator.cc:709\r\n    #4 0x4c008c in free \/var\/tmp\/portage\/sys-devel\/llvm-3.8.1-r2\/work\/llvm-3.8.1.src\/projects\/compiler-rt\/lib\/asan\/asan_malloc_linux.cc:41\r\n    #5 0x7faeeeb2d430 in jp2_colr_destroy \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jp2\/jp2_cod.c:450:3\r\n    #6 0x7faeeeb32b0e in jp2_box_destroy \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jp2\/jp2_cod.c:211:3\r\n    #7 0x7faeeeb32b0e in jp2_box_get \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jp2\/jp2_cod.c:314\r\n    #8 0x7faeeeb369a0 in jp2_decode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jp2\/jp2_dec.c:156:16\r\n    #9 0x7faeeeac6a29 in jas_image_decode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/base\/jas_image.c:392:16\r\n    #10 0x4f1686 in main \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/appl\/imginfo.c:188:16\r\n    #11 0x7faeedbd361f in __libc_start_main \/var\/tmp\/portage\/sys-libs\/glibc-2.22-r4\/work\/glibc-2.22\/csu\/libc-start.c:289\r\n    #12 0x418e68 in _init (\/usr\/bin\/imginfo+0x418e68)\r\n\r\nAddressSanitizer can not provide additional info.\r\nSUMMARY: AddressSanitizer: SEGV \/var\/tmp\/portage\/sys-devel\/llvm-3.8.1-r2\/work\/llvm-3.8.1.src\/projects\/compiler-rt\/lib\/asan\/..\/sanitizer_common\/sanitizer_atomic_clang.h:81 in atomic_compare_exchange_strong\r\n==20885==ABORTING\r\n<\/font><\/pre>\n<p><strong>Affected version:<\/strong><br \/>\n1.900.10<\/p>\n<p><strong>Fixed version:<\/strong><br \/>\n1.900.13<\/p>\n<p><strong>Commit fix:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/mdadams\/jasper\/commit\/bdfe95a6e81ffb4b2fad31a76b57943695beed20\">https:\/\/github.com\/mdadams\/jasper\/commit\/bdfe95a6e81ffb4b2fad31a76b57943695beed20<\/a><\/p>\n<p><strong>Credit:<\/strong><br \/>\nThis bug was discovered by Agostino Sarubbo of Gentoo.<\/p>\n<p><strong>CVE:<\/strong><br \/>\nCVE-2016-10250<\/p>\n<p><strong>Reproducer:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00002-jasper-NULLptr-jp2_colr_destroy\">https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00002-jasper-NULLptr-jp2_colr_destroy<\/a><\/p>\n<p><strong>Timeline:<\/strong><br \/>\n2016-10-22: bug re-discovered<br \/>\n2016-10-22: bug re-reported to upstream<br \/>\n2016-10-23: blog post about the issue<br \/>\n2016-10-23: upstream released a patch and 1.900.13<br \/>\n2017-03-12: CVE assigned<\/p>\n<p><strong>Note:<\/strong><br \/>\nThis bug was found with <a href=\"http:\/\/lcamtuf.coredump.cx\/afl\">American Fuzzy Lop<\/a>.<\/p>\n<p><strong>Permalink:<\/strong><\/p>\n<blockquote data-secret=\"5ftes2km5u\" class=\"wp-embedded-content\"><p><a href=\"http:\/\/blogs.gentoo.org\/ago\/2016\/10\/23\/jasper-null-pointer-dereference-in-jp2_colr_destroy-jp2_cod-c-incomplete-fix-for-cve-2016-8887\/\">jasper: NULL pointer dereference in jp2_colr_destroy (jp2_cod.c) (incomplete fix for CVE-2016-8887)<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"http:\/\/blogs.gentoo.org\/ago\/2016\/10\/23\/jasper-null-pointer-dereference-in-jp2_colr_destroy-jp2_cod-c-incomplete-fix-for-cve-2016-8887\/embed\/#?secret=5ftes2km5u\" data-secret=\"5ftes2km5u\" width=\"600\" height=\"338\" title=\"&#8220;jasper: NULL pointer dereference in jp2_colr_destroy (jp2_cod.c) (incomplete fix for CVE-2016-8887)&#8221; &#8212; agostino&#039;s blog\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description: jasper is an open-source initiative to provide a free software-based reference implementation of the codec specified in the JPEG-2000 Part-1 standard. Another round of fuzzing on an updated version (1.900.10) revealed that the NULL pointer access identified as CVE-2016-8887 &hellip; <a href=\"https:\/\/blogs.gentoo.org\/ago\/2016\/10\/23\/jasper-null-pointer-dereference-in-jp2_colr_destroy-jp2_cod-c-incomplete-fix-for-cve-2016-8887\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":140,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[12,10],"tags":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2EaBc-cR","_links":{"self":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/797"}],"collection":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/users\/140"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/comments?post=797"}],"version-history":[{"count":7,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/797\/revisions"}],"predecessor-version":[{"id":1469,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/797\/revisions\/1469"}],"wp:attachment":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/media?parent=797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/categories?post=797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/tags?post=797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}