{"id":2048,"date":"2017-08-28T16:38:07","date_gmt":"2017-08-28T14:38:07","guid":{"rendered":"http:\/\/blogs.gentoo.org\/ago\/?p=2048"},"modified":"2017-08-31T09:16:21","modified_gmt":"2017-08-31T07:16:21","slug":"openjpeg-stack-based-buffer-overflow-write-in-pgxtoimage-convert-c","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/ago\/2017\/08\/28\/openjpeg-stack-based-buffer-overflow-write-in-pgxtoimage-convert-c\/","title":{"rendered":"openjpeg: stack-based buffer overflow write in pgxtoimage (convert.c)"},"content":{"rendered":"<p><strong>Description<\/strong>:<br \/>\n<a href=\"http:\/\/www.openjpeg.org\">openjpeg<\/a> is an open-source JPEG 2000 library.<\/p>\n<p>The complete ASan output of the issue:<\/p>\n<pre><font size=\"2\"># opj_compress -n 1 -i $FILE -o null.j2k\r\n==159529==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fde59900160 at pc 0x000000450bef bp 0x7ffe7641f3c0 sp 0x7ffe7641eb70\r\nWRITE of size 36 at 0x7fde59900160 thread T0\r\n    #0 0x450bee in scanf_common \/var\/tmp\/portage\/sys-libs\/compiler-rt-sanitizers-4.0.1\/work\/compiler-rt-4.0.1.src\/lib\/asan\/..\/sanitizer_common\/sanitizer_common_interceptors_format.inc:343\r\n    #1 0x451d20 in __interceptor___isoc99_vfscanf \/var\/tmp\/portage\/sys-libs\/compiler-rt-sanitizers-4.0.1\/work\/compiler-rt-4.0.1.src\/lib\/asan\/..\/sanitizer_common\/sanitizer_common_interceptors.inc:1265\r\n    #2 0x451e02 in __interceptor___isoc99_fscanf \/var\/tmp\/portage\/sys-libs\/compiler-rt-sanitizers-4.0.1\/work\/compiler-rt-4.0.1.src\/lib\/asan\/..\/sanitizer_common\/sanitizer_common_interceptors.inc:1282\r\n    #3 0x525417 in pgxtoimage \/var\/tmp\/portage\/media-libs\/openjpeg-9999\/work\/openjpeg-9999\/src\/bin\/jp2\/convert.c:1188:9\r\n    #4 0x50b520 in main \/var\/tmp\/portage\/media-libs\/openjpeg-9999\/work\/openjpeg-9999\/src\/bin\/jp2\/opj_compress.c:1831:21\r\n    #5 0x7fde5d0c1680 in __libc_start_main \/var\/tmp\/portage\/sys-libs\/glibc-2.23-r4\/work\/glibc-2.23\/csu\/..\/csu\/libc-start.c:289\r\n    #6 0x41bc18 in _start (\/usr\/bin\/opj_compress+0x41bc18)\r\n\r\nAddress 0x7fde59900160 is located in stack of thread T0 at offset 352 in frame\r\n    #0 0x52523f in pgxtoimage \/var\/tmp\/portage\/media-libs\/openjpeg-9999\/work\/openjpeg-9999\/src\/bin\/jp2\/convert.c:1158\r\n\r\n  This frame has 16 object(s):\r\n    [32, 33) 'c1.i192'\r\n    [48, 49) 'c2.i193'\r\n    [64, 65) 'c3.i'\r\n    [80, 81) 'c4.i'\r\n    [96, 97) 'c1.i188'\r\n    [112, 113) 'c2.i'\r\n    [128, 129) 'c1.i183'\r\n    [144, 145) 'c1.i'\r\n    [160, 164) 'w'\r\n    [176, 180) 'h'\r\n    [192, 196) 'prec'\r\n    [208, 244) 'cmptparm'\r\n    [288, 289) 'endian1'\r\n    [304, 305) 'endian2'\r\n    [320, 352) 'signtmp'\r\n    [384, 416) 'temp' 0x0ffc4b318020: f2 f2 f2 f2 01 f2 01 f2 00 00 00 00[f2]f2 f2 f2\r\n  0x0ffc4b318030: 00 00 00 00 f3 f3 f3 f3 00 00 00 00 00 00 00 00\r\n  0x0ffc4b318040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0ffc4b318050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0ffc4b318060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0ffc4b318070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\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  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 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==159529==ABORTING\r\nAborted\r\n<\/font><\/pre>\n<p><strong>Affected version:<\/strong><br \/>\n2.2.0<\/p>\n<p><strong>Fixed version:<\/strong><br \/>\nN\/A<\/p>\n<p><strong>Commit fix:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/uclouvain\/openjpeg\/commit\/e5285319229a5d77bf316bb0d3a6cbd3cb8666d9\">https:\/\/github.com\/uclouvain\/openjpeg\/commit\/e5285319229a5d77bf316bb0d3a6cbd3cb8666d9<\/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-2017-14041<\/p>\n<p><strong>Reproducer:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00327-openjpeg-stackoverflow-pgxtoimage\">https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00327-openjpeg-stackoverflow-pgxtoimage<\/a><\/p>\n<p><strong>Timeline:<\/strong><br \/>\n2017-08-18: bug discovered and reported to upstream<br \/>\n2017-08-18: upstream released a patch<br \/>\n2017-08-28: blog post about the issue<br \/>\n2017-08-30: 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>.<br \/>\nThis bug was identified with bare metal servers donated by <a href=\"https:\/\/www.packet.net\/\">Packet<\/a>. This work is also supported by the <a href=\"https:\/\/www.coreinfrastructure.org\">Core Infrastructure Initiative<\/a>.<\/p>\n<p><strong>Permalink:<\/strong><\/p>\n<blockquote data-secret=\"dXg5R2DSLX\" class=\"wp-embedded-content\"><p><a href=\"http:\/\/blogs.gentoo.org\/ago\/2017\/08\/28\/openjpeg-stack-based-buffer-overflow-write-in-pgxtoimage-convert-c\/\">openjpeg: stack-based buffer overflow write in pgxtoimage (convert.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\/08\/28\/openjpeg-stack-based-buffer-overflow-write-in-pgxtoimage-convert-c\/embed\/#?secret=dXg5R2DSLX\" data-secret=\"dXg5R2DSLX\" width=\"600\" height=\"338\" title=\"&#8220;openjpeg: stack-based buffer overflow write in pgxtoimage (convert.c)&#8221; &#8212; agostino&#039;s blog\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description: openjpeg is an open-source JPEG 2000 library. The complete ASan output of the issue: # opj_compress -n 1 -i $FILE -o null.j2k ==159529==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fde59900160 at pc 0x000000450bef bp 0x7ffe7641f3c0 sp 0x7ffe7641eb70 WRITE of size 36 &hellip; <a href=\"https:\/\/blogs.gentoo.org\/ago\/2017\/08\/28\/openjpeg-stack-based-buffer-overflow-write-in-pgxtoimage-convert-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-x2","_links":{"self":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/2048"}],"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=2048"}],"version-history":[{"count":5,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/2048\/revisions"}],"predecessor-version":[{"id":2098,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/2048\/revisions\/2098"}],"wp:attachment":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/media?parent=2048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/categories?post=2048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/tags?post=2048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}