{"id":798,"date":"2016-10-23T09:51:23","date_gmt":"2016-10-23T07:51:23","guid":{"rendered":"http:\/\/blogs.gentoo.org\/ago\/?p=798"},"modified":"2017-03-13T12:33:50","modified_gmt":"2017-03-13T10:33:50","slug":"jasper-heap-based-buffer-overflow-in-jpc_dec_tiledecode-jpc_dec-c","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/ago\/2016\/10\/23\/jasper-heap-based-buffer-overflow-in-jpc_dec_tiledecode-jpc_dec-c\/","title":{"rendered":"jasper: heap-based buffer overflow in jpc_dec_tiledecode (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 on an updated version (1.900.10) a buffer over read because of an integer overflow.<\/p>\n<p>The complete ASan output:<\/p>\n<pre><font size=\"2\"># imginfo -f $FILE\r\nwarning: not enough tile data (9 bytes)                                                                                                                                                        \r\n=================================================================                                                                                                                              \r\n==15870==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x7f0c6a964770 at pc 0x7f0c729e93a4 bp 0x7ffd08758cf0 sp 0x7ffd08758ce8                                                      \r\nREAD of size 8 at 0x7f0c6a964770 thread T0                                                                                                                                                     \r\n    #0 0x7f0c729e93a3 in jpc_dec_tiledecode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:1126:43                                                   \r\n    #1 0x7f0c729d9567 in jpc_dec_process_eoc \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:1170:8                                                   \r\n    #2 0x7f0c729e20c4 in jpc_dec_decode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:390:10                                                        \r\n    #3 0x7f0c729e20c4 in jpc_decode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:254                                                               \r\n    #4 0x7f0c729afc41 in jp2_decode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jp2\/jp2_dec.c:215:21                                                            \r\n    #5 0x7f0c7293fa29 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    #6 0x4f1686 in main \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/appl\/imginfo.c:188:16                                                                                 \r\n    #7 0x7f0c71a4c61f 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 0x418e68 in _init (\/usr\/bin\/imginfo+0x418e68)                                                                                                                                           \r\n\r\n0x7f0c6a964770 is located 0 bytes to the right of 64749424-byte region [0x7f0c66ba4800,0x7f0c6a964770)                                                                                         \r\nallocated by thread T0 here:                                                                                                                                                                   \r\n    #0 0x4c03b8 in malloc \/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:52                                                   \r\n    #1 0x7f0c7297efbe in jas_malloc \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/base\/jas_malloc.c:105:11                                                        \r\n    #2 0x7f0c7297efbe in jas_alloc2 \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/base\/jas_malloc.c:136                                                           \r\n    #3 0x7f0c7297fb44 in jas_matrix_create \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/base\/jas_seq.c:129:25                                                    \r\n    #4 0x7f0c7297f71b in jas_seq2d_create \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/base\/jas_seq.c:90:17                                                      \r\n    #5 0x7f0c729d4280 in jpc_dec_tileinit \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:702:23                                                      \r\n    #6 0x7f0c729d4280 in jpc_dec_process_sod \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:559                                                      \r\n    #7 0x7f0c729e20c4 in jpc_dec_decode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:390:10                                                        \r\n    #8 0x7f0c729e20c4 in jpc_decode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:254                                                               \r\n    #9 0x7f0c729afc41 in jp2_decode \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jp2\/jp2_dec.c:215:21                                                            \r\n    #10 0x7f0c7293fa29 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    #11 0x4f1686 in main \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/appl\/imginfo.c:188:16\r\n    #12 0x7f0c71a4c61f in __libc_start_main \/var\/tmp\/portage\/sys-libs\/glibc-2.22-r4\/work\/glibc-2.22\/csu\/libc-start.c:289\r\n\r\nSUMMARY: AddressSanitizer: heap-buffer-overflow \/tmp\/portage\/media-libs\/jasper-1.900.10\/work\/jasper-1.900.10\/src\/libjasper\/jpc\/jpc_dec.c:1126:43 in jpc_dec_tiledecode\r\nShadow bytes around the buggy address:\r\n  0x0fe20d524890: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0fe20d5248a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0fe20d5248b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0fe20d5248c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0fe20d5248d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n=&gt;0x0fe20d5248e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00[fa]fa\r\n  0x0fe20d5248f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0fe20d524900: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0fe20d524910: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0fe20d524920: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0fe20d524930: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\nShadow byte legend (one shadow byte represents 8 application bytes):\r\n  Addressable:           00\r\n  Partially addressable: 01 02 03 04 05 06 07 \r\n  Heap left redzone:       fa\r\n  Heap right redzone:      fb\r\n  Freed heap region:       fd\r\n  Stack left redzone:      f1\r\n  Stack mid redzone:       f2\r\n  Stack right redzone:     f3\r\n  Stack partial redzone:   f4\r\n  Stack after return:      f5\r\n  Stack use after scope:   f8\r\n  Global redzone:          f9\r\n  Global init order:       f6\r\n  Poisoned by user:        f7\r\n  Container overflow:      fc\r\n  Array cookie:            ac\r\n  Intra object redzone:    bb\r\n  ASan internal:           fe\r\n  Left alloca redzone:     ca\r\n  Right alloca redzone:    cb\r\n==15870==ABORTING\r\n<\/font><\/pre>\n<p><strong>Affected version:<\/strong><br \/>\n1.900.10<\/p>\n<p><strong>Fixed version:<\/strong><br \/>\n1.900.12<\/p>\n<p><strong>Commit fix:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/mdadams\/jasper\/commit\/988f8365f7d8ad8073b6786e433d34c553ecf568\">https:\/\/github.com\/mdadams\/jasper\/commit\/988f8365f7d8ad8073b6786e433d34c553ecf568<\/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-2016-10249<\/p>\n<p><strong>Reproducer:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00001-jasper-heapoverflow-jpc_dec_tiledecode\">https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00001-jasper-heapoverflow-jpc_dec_tiledecode<\/a><\/p>\n<p><strong>Timeline:<\/strong><br \/>\n2016-10-22: bug discovered<br \/>\n2016-10-22: bug reported to upstream<br \/>\n2016-10-22: upstream released the patch<br \/>\n2016-10-23: upstream released 1.900.12<br \/>\n2016-10-23: 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=\"U1qnzHESBi\" class=\"wp-embedded-content\"><p><a href=\"http:\/\/blogs.gentoo.org\/ago\/2016\/10\/23\/jasper-heap-based-buffer-overflow-in-jpc_dec_tiledecode-jpc_dec-c\/\">jasper: heap-based buffer overflow in jpc_dec_tiledecode (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\/2016\/10\/23\/jasper-heap-based-buffer-overflow-in-jpc_dec_tiledecode-jpc_dec-c\/embed\/#?secret=U1qnzHESBi\" data-secret=\"U1qnzHESBi\" width=\"600\" height=\"338\" title=\"&#8220;jasper: heap-based buffer overflow in jpc_dec_tiledecode (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 on an updated version (1.900.10) a buffer over read because of an integer overflow. &hellip; <a href=\"https:\/\/blogs.gentoo.org\/ago\/2016\/10\/23\/jasper-heap-based-buffer-overflow-in-jpc_dec_tiledecode-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-cS","_links":{"self":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/798"}],"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=798"}],"version-history":[{"count":6,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/798\/revisions"}],"predecessor-version":[{"id":1467,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/798\/revisions\/1467"}],"wp:attachment":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/media?parent=798"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/categories?post=798"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/tags?post=798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}