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[Bug 1037008] New: VUL-1: CVE-2016-10349: libarchive: bsdtar: heap-based buffer overflow read
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Mon, 01 May 2017 13:01:53 +0000
  • Message-id: <bug-1037008-21960@http.bugzilla.opensuse.org/>
http://bugzilla.opensuse.org/show_bug.cgi?id=1037008


Bug ID: 1037008
Summary: VUL-1: CVE-2016-10349: libarchive: bsdtar: heap-based
buffer overflow read
Classification: openSUSE
Product: openSUSE Distribution
Version: Leap 42.2
Hardware: Other
OS: Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Security
Assignee: security-team@xxxxxxx
Reporter: mikhail.kasimov@xxxxxxxxx
QA Contact: qa-bugs@xxxxxxx
Found By: ---
Blocker: ---

Created attachment 723280
--> http://bugzilla.opensuse.org/attachment.cgi?id=723280&action=edit
CVE-2016-10349_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
=================================================================
==27838==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x61500000ff05 at pc 0x7fad7b060778 bp 0x7ffe35698a10 sp 0x7ffe35698a08
READ of size 1 at 0x61500000ff05 thread T0
#0 0x7fad7b060777 in archive_le32dec
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_endian.h:122:20

#1 0x7fad7b060777 in cab_read_header
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read_support_format_cab.c:669

#2 0x7fad7b060777 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

#3 0x7fad7affa45b in _archive_read_next_header2
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:649:7

#4 0x7fad7affa100 in _archive_read_next_header
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:687:8

#5 0x514c89 in read_archive
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/read.c:261:7
#6 0x51416b in tar_mode_t
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/read.c:94:2
#7 0x50f1a8 in main
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/tar/bsdtar.c:803:3
#8 0x7fad7a08d61f in __libc_start_main
/var/tmp/portage/sys-libs/glibc-2.22-r4/work/glibc-2.22/csu/libc-start.c:289
#9 0x41c168 in _init (/usr/bin/bsdtar+0x41c168)

0x61500000ff05 is located 5 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 0x7fad7aff5854 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 0x7fad7b0db8cd 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 0x7fad7afef670 in choose_format
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:712:10

#4 0x7fad7afef670 in archive_read_open1
/tmp/portage/app-arch/libarchive-3.2.2/work/libarchive-3.2.2/libarchive/archive_read.c:529

#5 0x7fad7b0162e1 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 0x7fad7b015e8b 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 0x7fad7a08d61f 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_endian.h:122:20
in archive_le32dec
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
==27838==ABORTING

Affected version:
3.2.2
Fixed version:
3.3.0
Commit fix:
N/A
Reproducer:
https://github.com/asarubbo/poc/blob/master/00105-libarchive-heapoverflow-archive_le32dec
CVE:
CVE-2016-10349
======================================================

[1] https://security-tracker.debian.org/tracker/CVE-2016-10349

[2] https://github.com/libarchive/libarchive/issues/834

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