{"id":854,"date":"2016-11-07T17:51:00","date_gmt":"2016-11-07T15:51:00","guid":{"rendered":"http:\/\/blogs.gentoo.org\/ago\/?p=854"},"modified":"2016-11-10T16:24:25","modified_gmt":"2016-11-10T14:24:25","slug":"jasper-use-after-free-in-jas_realloc-jas_malloc-c","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/ago\/2016\/11\/07\/jasper-use-after-free-in-jas_realloc-jas_malloc-c\/","title":{"rendered":"jasper: use after free in jas_realloc (jas_malloc.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>A crafted image, maybe posted in the past as testcase for another bug, causes in the 1.900.18 version a use-after-free. No fuzzers involved at this time.<\/p>\n<p>The complete ASan output:<\/p>\n<pre><font size=\"2\"># imginfo -f $FILE\r\nCorrupt JPEG data: 19 extraneous bytes before marker 0xda                                                                                                                                                                                                                      \r\n=================================================================                                                                                                                                                                                                              \r\n==21990==ERROR: AddressSanitizer: heap-use-after-free on address 0x619000009b80 at pc 0x7fce4229d29d bp 0x7fffab22f9a0 sp 0x7fffab22f998                                                                                                                                       \r\nREAD of size 8 at 0x619000009b80 thread T0                                                                                                                                                                                                                                     \r\n    #0 0x7fce4229d29c in jas_realloc \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_malloc.c:182:21                                                                                                                                       \r\n    #1 0x7fce422a5e38 in mem_resize \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_stream.c:1001:14                                                                                                                                       \r\n    #2 0x7fce422a5e38 in mem_write \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_stream.c:1027                                                                                                                                           \r\n    #3 0x7fce422a30e5 in jas_stream_flushbuf \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_stream.c:822:7                                                                                                                                \r\n    #4 0x7fce422a4b4c in jas_stream_flush \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_stream.c:752:9                                                                                                                                   \r\n    #5 0x7fce422a4b4c in jas_stream_seek \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_stream.c:659                                                                                                                                      \r\n    #6 0x7fce42273928 in jas_image_cmpt_create \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_image.c:351:4                                                                                                                               \r\n    #7 0x7fce42276986 in jas_image_addcmpt \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_image.c:723:18                                                                                                                                  \r\n    #8 0x7fce4233e3fc in jpg_mkimage \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/jpg\/jpg_dec.c:268:7                                                                                                                                            \r\n    #9 0x7fce4233e3fc in jpg_decode \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/jpg\/jpg_dec.c:183                                                                                                                                               \r\n    #10 0x7fce422749bd in jas_image_decode \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_image.c:396:16                                                                                                                                  \r\n    #11 0x4f1330 in main \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/appl\/imginfo.c:203:16                                                                                                                                                                \r\n    #12 0x7fce4138961f in __libc_start_main \/var\/tmp\/portage\/sys-libs\/glibc-2.22-r4\/work\/glibc-2.22\/csu\/libc-start.c:289                                                                                                                                                       \r\n    #13 0x418cb8 in _init (\/usr\/bin\/imginfo+0x418cb8)                                                                                                                                                                                                                          \r\n                                                                                                                                                                                                                                                                               \r\n0x619000009b80 is located 0 bytes inside of 1056-byte region [0x619000009b80,0x619000009fa0)                                                                                                                                                                                   \r\nfreed by thread T0 here:                                                                                                                                                                                                                                                       \r\n    #0 0x4bff00 in free \/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:38                                                                                                                                     \r\n    #1 0x7fce4229d359 in jas_free \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_malloc.c:225:3                                                                                                                                           \r\n                                                                                                                                                                                                                                                                               \r\npreviously allocated by thread T0 here:                                                                                                                                                                                                                                        \r\n    #0 0x4c0208 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 0x7fce4229d0b2 in jas_malloc \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_malloc.c:148:13                                                                                                                                        \r\n                                                                                                                                                                                                                                                                               \r\nSUMMARY: AddressSanitizer: heap-use-after-free \/tmp\/portage\/media-libs\/jasper-1.900.18\/work\/jasper-1.900.18\/src\/libjasper\/base\/jas_malloc.c:182:21 in jas_realloc                                                                                                              \r\nShadow bytes around the buggy address:                                                                                                                                                                                                                                         \r\n  0x0c327fff9320: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa                                                                                                                                                                                                              \r\n  0x0c327fff9330: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa                                                                                                                                                                                                              \r\n  0x0c327fff9340: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa                                                                                                                                                                                                              \r\n  0x0c327fff9350: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa                                                                                                                                                                                                              \r\n  0x0c327fff9360: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa                                                                                                                                                                                                              \r\n=&gt;0x0c327fff9370:[fd]fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd                                                                                                                                                                                                              \r\n  0x0c327fff9380: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd                                                                                                                                                                                                              \r\n  0x0c327fff9390: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd                                                                                                                                                                                                              \r\n  0x0c327fff93a0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd                                                                                                                                                                                                              \r\n  0x0c327fff93b0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd                                                                                                                                                                                                              \r\n  0x0c327fff93c0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd                                                                                                                                                                                                              \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==21990==ABORTING\r\n<\/font><\/pre>\n<p><strong>Affected version:<\/strong><br \/>\n1.900.18<\/p>\n<p><strong>Fixed version:<\/strong><br \/>\n1.900.22<\/p>\n<p><strong>Commit fix:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/mdadams\/jasper\/commit\/634ce8e8a5accc0fa05dd2c20d42b4749d4b2735\">https:\/\/github.com\/mdadams\/jasper\/commit\/634ce8e8a5accc0fa05dd2c20d42b4749d4b2735<\/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-2016-9262<\/p>\n<p><strong>Reproducer:<\/strong><br \/>\n<a href=\"https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00028-jasper-uaf-jas_realloc\">https:\/\/github.com\/asarubbo\/poc\/blob\/master\/00028-jasper-uaf-jas_realloc<\/a><\/p>\n<p><strong>Timeline:<\/strong><br \/>\n2016-11-02: bug discovered and reported to upstream<br \/>\n2016-11-06: upstream released a patch and 1.900.22<br \/>\n2016-11-07: blog post about the issue<br \/>\n2016-11-10: CVE assigned<\/p>\n<p><strong>Note:<\/strong><br \/>\nThis bug was found with <a href=\"https:\/\/github.com\/google\/sanitizers\/wiki\/AddressSanitizer\">Address Sanitizer<\/a>.<\/p>\n<p><strong>Permalink:<\/strong><\/p>\n<blockquote data-secret=\"QbtsTaTQEH\" class=\"wp-embedded-content\"><p><a href=\"http:\/\/blogs.gentoo.org\/ago\/2016\/11\/07\/jasper-use-after-free-in-jas_realloc-jas_malloc-c\/\">jasper: use after free in jas_realloc (jas_malloc.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\/11\/07\/jasper-use-after-free-in-jas_realloc-jas_malloc-c\/embed\/#?secret=QbtsTaTQEH\" data-secret=\"QbtsTaTQEH\" width=\"600\" height=\"338\" title=\"&#8220;jasper: use after free in jas_realloc (jas_malloc.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. A crafted image, maybe posted in the past as testcase for another bug, causes in the 1.900.18 version &hellip; <a href=\"https:\/\/blogs.gentoo.org\/ago\/2016\/11\/07\/jasper-use-after-free-in-jas_realloc-jas_malloc-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-dM","_links":{"self":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/854"}],"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=854"}],"version-history":[{"count":5,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/854\/revisions"}],"predecessor-version":[{"id":893,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/posts\/854\/revisions\/893"}],"wp:attachment":[{"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/media?parent=854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/categories?post=854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/ago\/wp-json\/wp\/v2\/tags?post=854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}