Created attachment 723281 [details]
CVE-2016-10350_reproducer
Ref:
https://blogs.gentoo.org/ago/2017/05/01/libarchive-two-heap-based-buffer-overflow-read/
==============================================================
Description:
libarchive is a multi-format archive and compression library.
In the 2016 I reported two heap-based buffer over-read to libarchive. They
appear to have already been fixed in the trunk when I reported them; here are
the details:
# bsdtar -t -f $FILE
==21129==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x61500000ff00 at pc 0x7fa070bd7827 bp 0x7fffb7183a30 sp 0x7fffb7183a28
READ of size 1 at 0x61500000ff00 thread T0
#0 0x7fa070bd7826 in archive_read_format_cab_read_header
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read_support_format_cab.c:903:9
#1 0x7fa070b7145b in _archive_read_next_header2
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:649:7
#2 0x7fa070b71100 in _archive_read_next_header
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:687:8
#3 0x514c89 in read_archive
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/read.c:261:7
#4 0x51416b in tar_mode_t
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/read.c:94:2
#5 0x50f1a8 in main
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/bsdtar.c:803:3
#6 0x7fa06fc0461f in __libc_start_main
/var/tmp/portage/sys-libs/glibc-2.22-r4/work/glibc-2.22/csu/libc-start.c:289
#7 0x41c168 in _init (/usr/bin/bsdtar+0x41c168)
0x61500000ff00 is located 0 bytes to the right of 512-byte region
[0x61500000fd00,0x61500000ff00)
allocated by thread T0 here:
#0 0x4d4f28 in malloc
/tmp/portage/sys-devel/llvm-3.9.0-r1/work/llvm-3.9.0.src/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:64
#1 0x7fa070b6c854 in __archive_read_filter_ahead
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:1436:17
#2 0x7fa070c528cd in archive_read_format_tar_bid
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read_support_format_tar.c:310:6
#3 0x7fa070b66670 in choose_format
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:712:10
#4 0x7fa070b66670 in archive_read_open1
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:529
#5 0x7fa070b8d2e1 in archive_read_open_filenames
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read_open_filename.c:152:10
#6 0x7fa070b8ce8b in archive_read_open_filename
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read_open_filename.c:109:9
#7 0x5149eb in read_archive
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/read.c:223:6
#8 0x51416b in tar_mode_t
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/read.c:94:2
#9 0x50f1a8 in main
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/bsdtar.c:803:3
#10 0x7fa06fc0461f in __libc_start_main
/var/tmp/portage/sys-libs/glibc-2.22-r4/work/glibc-2.22/csu/libc-start.c:289
SUMMARY: AddressSanitizer: heap-buffer-overflow
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read_support_format_cab.c:903:9
in archive_read_format_cab_read_header
Shadow bytes around the buggy address:
0x0c2a7fff9f90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fff9fa0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fff9fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fff9fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fff9fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c2a7fff9fe0:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fff9ff0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fffa000: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fffa010: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fffa020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fffa030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==21129==ABORTING
Affected version:
3.2.2
Fixed version:
3.3.0
Commit fix:
N/A
Reproducer:
https://github.com/asarubbo/poc/blob/master/00106-libarchive-heapoverflow-archive_read_format_cab_read_header
CVE:
CVE-2016-10350
Credit:
These bugs were discovered by Agostino Sarubbo of Gentoo.
Timeline:
2016-12-06: bugs discovered and reported to upstream
2017-05-01: blog post about the issue
2017-05-01: CVE assigned
Note:
This bug was found with American Fuzzy Lop.
Permalink:
libarchive: two heap-based buffer overflow read
==============================================================
[1] https://security-tracker.debian.org/tracker/CVE-2016-10350
[2] https://github.com/libarchive/libarchive/issues/835
(open-)SUSE: https://software.opensuse.org/package/bsdtar
3.3.1 (TW, official repo)
3.1.2 (42.{1,2}, official repo)