Date: Wed, 25 Jan 2017 10:12:23 +0100 From: Agostino Sarubbo <ago@...too.org> To: oss-security@...ts.openwall.com Subject: jasper: invalid memory read in jas_matrix_bindsub (jas_seq.c) 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: # imginfo -f $FILE warning: ignoring unknown marker segment (0xff59) type = 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) type = 0xff46 (UNKNOWN); len = 20;01 40 40 00 00 00 00 00 00 00 00 00 00 00 12 00 94 7f ASAN:DEADLYSIGNAL ================================================================= ==22653==ERROR: AddressSanitizer: SEGV on unknown address 0x60180000ec30 (pc 0x7f410df421b7 bp 0x7ffdc80abaf0 sp 0x7ffdc80aba60 T0) ==22653==The signal is caused by a READ memory access. #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 #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 #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 #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 #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 #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 #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 #7 0x50a3be in main /tmp/portage/media- libs/jasper-2.0.10/work/jasper-2.0.10/src/appl/imginfo.c:238:16 #8 0x7f410d01378f in __libc_start_main /tmp/portage/sys-libs/glibc-2.23- r3/work/glibc-2.23/csu/../csu/libc-start.c:289 #9 0x419cd8 in _start (/usr/bin/imginfo+0x419cd8) AddressSanitizer can not provide additional info. SUMMARY: 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 ==22653==ABORTING Affected version: 2.0.10 Fixed version: N/A Commit fix: N/A Credit: This bug was discovered by Agostino Sarubbo of Gentoo. CVE: N/A Reproducer: https://github.com/asarubbo/poc/blob/master/00125-jasper-invalidread-jas_matrix_bindsub Timeline: 2017-01-21: bug discovered and reported upstream 2017-01-25: blog post about the issue Note: This bug was found with American Fuzzy Lop. Permalink: https://blogs.gentoo.org/ago/2017/01/25/jasper-invalid-memory-read-in-jas_matrix_bindsub-jas_seq-c -- Agostino Sarubbo Gentoo Linux Developer
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