heap buffer overflow while running wavpack

[sebastinas]

We got another one (https://bugs.debian.org/889559):

heap buffer overflow running wavpack with "-y poc.wav" option

Running 'wavpack -y poc.wav' with the attached file raises heap buffer overflow
which may allow a remote attacker to cause unspecified impact including denial-of-service attack
I expected the program to terminate without segfault, but the program crashes as follow

june@june:~/temp/report/wavpack/00009776$ ../../binary/wavpack-5.1.0/cli/.libs/wavpack -y poc.wav

 WAVPACK  Hybrid Lossless Audio Compressor  Linux Version 5.1.0
 Copyright (c) 1998 - 2017 David Bryant.  All Rights Reserved.

creating poc.wv,=================================================================
==3834==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000ef91 at pc 0x7ffff6e8105b bp 0x7fffffffb2e0 sp 0x7fffffffaa90
READ of size 2 at 0x60200000ef91 thread T0
    #0 0x7ffff6e8105a  (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x4305a)
    #1 0x55555557ad85 in ParseDsdiffHeaderConfig /home/june/temp/report/binary/wavpack-5.1.0/cli/dsdiff.c:171
    #2 0x555555567c3a in pack_file /home/june/temp/report/binary/wavpack-5.1.0/cli/wavpack.c:1774
    #3 0x555555565e5e in main /home/june/temp/report/binary/wavpack-5.1.0/cli/wavpack.c:1270
    #4 0x7ffff65902b0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202b0)
    #5 0x5555555609a9 in _start (/home/june/temp/report/binary/wavpack-5.1.0/cli/.libs/wavpack+0xc9a9)

0x60200000ef91 is located 0 bytes to the right of 1-byte region [0x60200000ef90,0x60200000ef91)
allocated by thread T0 here:
    #0 0x7ffff6effd28 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1d28)
    #1 0x55555557ac4a in ParseDsdiffHeaderConfig /home/june/temp/report/binary/wavpack-5.1.0/cli/dsdiff.c:156
    #2 0x555555567c3a in pack_file /home/june/temp/report/binary/wavpack-5.1.0/cli/wavpack.c:1774
    #3 0x555555565e5e in main /home/june/temp/report/binary/wavpack-5.1.0/cli/wavpack.c:1270
    #4 0x7ffff65902b0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202b0)

SUMMARY: AddressSanitizer: heap-buffer-overflow (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x4305a)
Shadow bytes around the buggy address:
  0x0c047fff9da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9db0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9dc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9dd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9de0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c047fff9df0: fa fa[01]fa fa fa fd fd fa fa 03 fa fa fa 00 fa
  0x0c047fff9e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e40: 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
==3834==ABORTING

This bug was found with a fuzzer developed by 'SoftSec' group at KAIST

poc.wav is available at https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=889559;filename=poc.wav;msg=5.

[dbry]

Thanks for reporting this!

[carnil]

CVE-2018-7253 was assigned by MITRE to this issue.