{"id":1137,"date":"2017-01-25T10:54:09","date_gmt":"2017-01-25T08:54:09","guid":{"rendered":"http:\/\/blogs.gentoo.org\/ago\/?p=1137"},"modified":"2017-03-13T13:08:56","modified_gmt":"2017-03-13T11:08:56","slug":"jasper-invalid-memory-read-in-jas_matrix_bindsub-jas_seq-c","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/ago\/2017\/01\/25\/jasper-invalid-memory-read-in-jas_matrix_bindsub-jas_seq-c\/","title":{"rendered":"jasper: invalid memory read in jas_matrix_bindsub (jas_seq.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 an invalid memory read.<\/p>\n<p>The complete ASan output:<\/p>\n<pre><font size=\"2\"># imginfo -f $FILE\r\nwarning: ignoring unknown marker segment (0xff59)\r\ntype = 0xff59 (UNKNOWN); len = 20;00 40 40 00 00 00 00 69 00 00 00 00 00 00 00 00 00 00 warning: ignoring unknown marker segment (0xff46)\r\ntype = 0xff46 (UNKNOWN); len = 20;01 40 40 00 00 00 00 00 00 00 00 00 00 00 12 00 94 7f ASAN:DEADLYSIGNAL\r\n=================================================================\r\n==22653==ERROR: AddressSanitizer: SEGV on unknown address 0x60180000ec30 (pc 0x7f410df421b7 bp 0x7ffdc80abaf0 sp 0x7ffdc80aba60 T0)\r\n==22653==The signal is caused by a READ memory access.\r\n    #0 0x7f410df421b6 in jas_matrix_bindsub \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/base\/jas_seq.c:254:18\r\n    #1 0x7f410df951a1 in jpc_dec_tileinit \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jpc\/jpc_dec.c:835:5\r\n    #2 0x7f410df951a1 in jpc_dec_process_sod \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jpc\/jpc_dec.c:594\r\n    #3 0x7f410dfa1853 in jpc_dec_decode \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jpc\/jpc_dec.c:425:10\r\n    #4 0x7f410dfa1853 in jpc_decode \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jpc\/jpc_dec.c:262\r\n    #5 0x7f410df71231 in jp2_decode \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/jp2\/jp2_dec.c:218:21\r\n    #6 0x7f410df33214 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    #7 0x50a3be in main \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/appl\/imginfo.c:238:16\r\n    #8 0x7f410d01378f in __libc_start_main \/tmp\/portage\/sys-libs\/glibc-2.23-r3\/work\/glibc-2.23\/csu\/..\/csu\/libc-start.c:289\r\n    #9 0x419cd8 in _start (\/usr\/bin\/imginfo+0x419cd8)\r\n\r\nAddressSanitizer can not provide additional info.\r\nSUMMARY: AddressSanitizer: SEGV \/tmp\/portage\/media-libs\/jasper-2.0.10\/work\/jasper-2.0.10\/src\/libjasper\/base\/jas_seq.c:254:18 in jas_matrix_bindsub\r\n==22653==ABORTING\r\n<\/font><\/pre>\n<p><strong>Affected version:<\/strong><br \/>\n2.0.10<\/p>\n<p><strong>Fixed version:<\/strong><br \/>\nN\/A<\/p>\n<p><strong>Commit fix:<\/strong><br \/>\nN\/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-2017-6851<\/p>\n<p><strong>Reproducer:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00125-jasper-invalidread-jas_matrix_bindsub\">https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00125-jasper-invalidread-jas_matrix_bindsub<\/a><\/p>\n<p><strong>Timeline:<\/strong><br \/>\n2017-01-21: bug discovered and reported upstream<br \/>\n2017-01-25: blog post about the issue<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=\"QS6eJlmwGV\" class=\"wp-embedded-content\"><p><a href=\"http:\/\/blogs.gentoo.org\/ago\/2017\/01\/25\/jasper-invalid-memory-read-in-jas_matrix_bindsub-jas_seq-c\/\">jasper: invalid memory read in jas_matrix_bindsub (jas_seq.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-invalid-memory-read-in-jas_matrix_bindsub-jas_seq-c\/embed\/#?secret=QS6eJlmwGV\" data-secret=\"QS6eJlmwGV\" width=\"600\" height=\"338\" title=\"&#8220;jasper: invalid memory read in jas_matrix_bindsub (jas_seq.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 an invalid memory read. The complete ASan output: &hellip; <a href=\"https:\/\/blogs.gentoo.org\/ago\/2017\/01\/25\/jasper-invalid-memory-read-in-jas_matrix_bindsub-jas_seq-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-il","_links":{"self":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1137"}],"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=1137"}],"version-history":[{"count":3,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1137\/revisions"}],"predecessor-version":[{"id":1475,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1137\/revisions\/1475"}],"wp:attachment":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/media?parent=1137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/categories?post=1137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/tags?post=1137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}