{"id":1135,"date":"2017-01-25T10:48:33","date_gmt":"2017-01-25T08:48:33","guid":{"rendered":"http:\/\/blogs.gentoo.org\/ago\/?p=1135"},"modified":"2017-03-27T11:23:57","modified_gmt":"2017-03-27T09:23:57","slug":"jasper-null-pointer-dereference-in-jp2_cdef_destroy-jp2_cod-c","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/ago\/2017\/01\/25\/jasper-null-pointer-dereference-in-jp2_cdef_destroy-jp2_cod-c\/","title":{"rendered":"jasper: NULL pointer dereference in jp2_cdef_destroy (jp2_cod.c)"},"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 shows that a crafted image causes a NULL pointer access.<\/p>\n<p>The complete ASan output:<\/p>\n<pre><font size=\"2\"># imginfo -f $FILE\r\ncannot parse box data\r\nASAN:DEADLYSIGNAL\r\n=================================================================\r\n==6697==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x00000041da35 bp 0xbebebebebebebeae sp 0x7fff60ad6480 T0)\r\n    #0 0x41da34 in atomic_compare_exchange_strong \/tmp\/portage\/sys-devel\/llvm-3.9.1\/work\/llvm-3.9.1.src\/projects\/compiler-rt\/lib\/asan\/..\/sanitizer_common\/sanitizer_atomic_clang.h:81\r\n    #1 0x41da34 in __asan::Allocator::AtomicallySetQuarantineFlagIfAllocated(__asan::AsanChunk*, void*, __sanitizer::BufferedStackTrace*) \/tmp\/portage\/sys-devel\/llvm-3.9.1\/work\/llvm-3.9.1.src\/projects\/compiler-rt\/lib\/asan\/asan_allocator.cc:468\r\n    #2 0x41da34 in __asan::Allocator::Deallocate(void*, unsigned long, __sanitizer::BufferedStackTrace*, __asan::AllocType) \/tmp\/portage\/sys-devel\/llvm-3.9.1\/work\/llvm-3.9.1.src\/projects\/compiler-rt\/lib\/asan\/asan_allocator.cc:522\r\n    #3 0x41da34 in __asan::asan_free(void*, __sanitizer::BufferedStackTrace*, __asan::AllocType) \/tmp\/portage\/sys-devel\/llvm-3.9.1\/work\/llvm-3.9.1.src\/projects\/compiler-rt\/lib\/asan\/asan_allocator.cc:725\r\n    #4 0x4d271c in free \/tmp\/portage\/sys-devel\/llvm-3.9.1\/work\/llvm-3.9.1.src\/projects\/compiler-rt\/lib\/asan\/asan_malloc_linux.cc:50\r\n    #5 0x7f86ef11c995 in jp2_cdef_destroy \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jp2\/jp2_cod.c:230:3\r\n    #6 0x7f86ef11e18e in jp2_box_destroy \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jp2\/jp2_cod.c:212:3\r\n    #7 0x7f86ef11e18e in jp2_box_get \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jp2\/jp2_cod.c:319\r\n    #8 0x7f86ef1219f6 in jp2_decode \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jp2\/jp2_dec.c:159:16\r\n    #9 0x7f86ef0e4214 in jas_image_decode \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/base\/jas_image.c:444:16\r\n    #10 0x50a3be in main \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/appl\/imginfo.c:238:16\r\n    #11 0x7f86ee1c478f in __libc_start_main \/tmp\/portage\/sys-libs\/glibc-2.23-r3\/work\/glibc-2.23\/csu\/..\/csu\/libc-start.c:289\r\n    #12 0x419cd8 in _start (\/usr\/bin\/imginfo+0x419cd8)\r\n\r\nAddressSanitizer can not provide additional info.\r\nSUMMARY: AddressSanitizer: SEGV \/tmp\/portage\/sys-devel\/llvm-3.9.1\/work\/llvm-3.9.1.src\/projects\/compiler-rt\/lib\/asan\/..\/sanitizer_common\/sanitizer_atomic_clang.h:81 in atomic_compare_exchange_strong\r\n==6697==ABORTING\r\n<\/font><\/pre>\n<p><strong>Affected version:<\/strong><br \/>\n2.0.10<\/p>\n<p><strong>Fixed version:<\/strong><br \/>\n2.0.13 (not released atm)<\/p>\n<p><strong>Commit fix:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/mdadams\/jasper\/commit\/e96fc4fdd525fa0ede28074a7e2b1caf94b58b0d\">https:\/\/github.com\/mdadams\/jasper\/commit\/e96fc4fdd525fa0ede28074a7e2b1caf94b58b0d<\/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-2017-6850<\/p>\n<p><strong>Reproducer:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00124-jasper-nullptr-jp2_cdef_destroy\">https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00124-jasper-nullptr-jp2_cdef_destroy<\/a><\/p>\n<p><strong>Timeline:<\/strong><br \/>\n2017-01-18: bug discovered and reported upstream<br \/>\n2017-01-25: blog post about the issue<br \/>\n2017-03-04: upstream released a patch<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=\"QQKvY2E5Q9\" class=\"wp-embedded-content\"><p><a href=\"http:\/\/blogs.gentoo.org\/ago\/2017\/01\/25\/jasper-null-pointer-dereference-in-jp2_cdef_destroy-jp2_cod-c\/\">jasper: NULL pointer dereference in jp2_cdef_destroy (jp2_cod.c)<\/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\/2017\/01\/25\/jasper-null-pointer-dereference-in-jp2_cdef_destroy-jp2_cod-c\/embed\/#?secret=QQKvY2E5Q9\" data-secret=\"QQKvY2E5Q9\" width=\"600\" height=\"338\" title=\"&#8220;jasper: NULL pointer dereference in jp2_cdef_destroy (jp2_cod.c)&#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 shows that a crafted image causes a NULL pointer access. The complete ASan output: &hellip; <a href=\"https:\/\/blogs.gentoo.org\/ago\/2017\/01\/25\/jasper-null-pointer-dereference-in-jp2_cdef_destroy-jp2_cod-c\/\">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-ij","_links":{"self":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1135"}],"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=1135"}],"version-history":[{"count":8,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1135\/revisions"}],"predecessor-version":[{"id":1536,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1135\/revisions\/1536"}],"wp:attachment":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/media?parent=1135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/categories?post=1135"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/tags?post=1135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}