{"id":1100,"date":"2017-01-16T12:47:58","date_gmt":"2017-01-16T10:47:58","guid":{"rendered":"http:\/\/blogs.gentoo.org\/ago\/?p=1100"},"modified":"2017-01-25T17:53:11","modified_gmt":"2017-01-25T15:53:11","slug":"jasper-invalid-memory-read-in-jpc_undo_roi-jpc_dec-c","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/ago\/2017\/01\/16\/jasper-invalid-memory-read-in-jpc_undo_roi-jpc_dec-c\/","title":{"rendered":"jasper: invalid memory read in jpc_undo_roi (jpc_dec.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\n==22872==ERROR: AddressSanitizer: SEGV on unknown address 0x7f8a4a950800 (pc 0x7f8e4a543b93 bp 0x7ffe29bfdcd0 sp 0x7ffe29bfdb80 T0)\r\n==22872==The signal is caused by a READ memory access.\r\n    #0 0x7f8e4a543b92 in jpc_undo_roi \/tmp\/portage\/media-libs\/jasper-1.900.27\/work\/jasper-1.900.27\/src\/libjasper\/jpc\/jpc_dec.c:1925:10\r\n    #1 0x7f8e4a543b92 in jpc_dec_tiledecode \/tmp\/portage\/media-libs\/jasper-1.900.27\/work\/jasper-1.900.27\/src\/libjasper\/jpc\/jpc_dec.c:1104\r\n    #2 0x7f8e4a534cdf in jpc_dec_process_sod \/tmp\/portage\/media-libs\/jasper-1.900.27\/work\/jasper-1.900.27\/src\/libjasper\/jpc\/jpc_dec.c:658:7\r\n    #3 0x7f8e4a53e6b3 in jpc_dec_decode \/tmp\/portage\/media-libs\/jasper-1.900.27\/work\/jasper-1.900.27\/src\/libjasper\/jpc\/jpc_dec.c:425:10\r\n    #4 0x7f8e4a53e6b3 in jpc_decode \/tmp\/portage\/media-libs\/jasper-1.900.27\/work\/jasper-1.900.27\/src\/libjasper\/jpc\/jpc_dec.c:262\r\n    #5 0x7f8e4a4a0b84 in jas_image_decode \/tmp\/portage\/media-libs\/jasper-1.900.27\/work\/jasper-1.900.27\/src\/libjasper\/base\/jas_image.c:444:16\r\n    #6 0x509eed in main \/tmp\/portage\/media-libs\/jasper-1.900.27\/work\/jasper-1.900.27\/src\/appl\/imginfo.c:219:16\r\n    #7 0x7f8e495a861f in __libc_start_main \/var\/tmp\/portage\/sys-libs\/glibc-2.22-r4\/work\/glibc-2.22\/csu\/libc-start.c:289\r\n    #8 0x419978 in _init (\/usr\/bin\/imginfo+0x419978)\r\n\r\nAddressSanitizer can not provide additional info.\r\nSUMMARY: AddressSanitizer: SEGV \/tmp\/portage\/media-libs\/jasper-1.900.27\/work\/jasper-1.900.27\/src\/libjasper\/jpc\/jpc_dec.c:1925:10 in jpc_undo_roi\r\n==22872==ABORTING\r\n<\/font><\/pre>\n<p><strong>Affected version:<\/strong><br \/>\n1.900.27<\/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-2017-5504<\/p>\n<p><strong>Reproducer:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00054-jasper-invalidread-jpc_undo_roi\">https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00054-jasper-invalidread-jpc_undo_roi<\/a><\/p>\n<p><strong>Timeline:<\/strong><br \/>\n2016-11-20: bug discovered and reported upstream<br \/>\n2017-01-16: blog post about the issue<br \/>\n2017-01-17: 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=\"v6LBxKBxZA\" class=\"wp-embedded-content\"><p><a href=\"http:\/\/blogs.gentoo.org\/ago\/2017\/01\/16\/jasper-invalid-memory-read-in-jpc_undo_roi-jpc_dec-c\/\">jasper: invalid memory read in jpc_undo_roi (jpc_dec.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\/16\/jasper-invalid-memory-read-in-jpc_undo_roi-jpc_dec-c\/embed\/#?secret=v6LBxKBxZA\" data-secret=\"v6LBxKBxZA\" width=\"600\" height=\"338\" title=\"&#8220;jasper: invalid memory read in jpc_undo_roi (jpc_dec.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\/16\/jasper-invalid-memory-read-in-jpc_undo_roi-jpc_dec-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-hK","_links":{"self":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1100"}],"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=1100"}],"version-history":[{"count":4,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1100\/revisions"}],"predecessor-version":[{"id":1152,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/1100\/revisions\/1152"}],"wp:attachment":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/media?parent=1100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/categories?post=1100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/tags?post=1100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}