Global buffer overflow while running wavpack
sebastinas opened this issue · comments
Forwarding a bug report we received in the Debian Bug Tracker (https://bugs.debian.org/889274):
global buffer overflow running wavpack with "-y poc.wav" option
Running 'wavpack -y poc.wav' with the attached file raises global 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/00000178$ ../../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,=================================================================
==13894==ERROR: AddressSanitizer: global-buffer-overflow on address 0x55555558ac95 at pc 0x7ffff6e96181 bp 0x7fffffffb1f0 sp 0x7fffffffa9a0
READ of size 22 at 0x55555558ac95 thread T0
#0 0x7ffff6e96180 in strdup (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x58180)
#1 0x555555578d57 in ParseCaffHeaderConfig /home/june/temp/report/binary/wavpack-5.1.0/cli/caff.c:425
#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)
0x55555558ac95 is located 0 bytes to the right of global variable 'TMH_full' defined in 'caff.c:92:19' (0x55555558ac80) of size 21
0x55555558ac95 is located 43 bytes to the left of global variable 'TMH_std' defined in 'caff.c:93:19' (0x55555558acc0) of size 16
SUMMARY: AddressSanitizer: global-buffer-overflow (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x58180) in strdup
Shadow bytes around the buggy address:
0x0aab2aaa9540: 00 03 f9 f9 f9 f9 f9 f9 07 f9 f9 f9 f9 f9 f9 f9
0x0aab2aaa9550: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0aab2aaa9560: 00 00 00 00 03 f9 f9 f9 f9 f9 f9 f9 00 00 00 00
0x0aab2aaa9570: 00 03 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
0x0aab2aaa9580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0aab2aaa9590: 00 00[05]f9 f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9
0x0aab2aaa95a0: 03 f9 f9 f9 f9 f9 f9 f9 03 f9 f9 f9 f9 f9 f9 f9
0x0aab2aaa95b0: 03 f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9 f9 f9 f9 f9
0x0aab2aaa95c0: 06 f9 f9 f9 f9 f9 f9 f9 07 f9 f9 f9 f9 f9 f9 f9
0x0aab2aaa95d0: 00 01 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
0x0aab2aaa95e0: 05 f9 f9 f9 f9 f9 f9 f9 06 f9 f9 f9 f9 f9 f9 f9
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
==13894==ABORTING
poc.wav can be downloaded from https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=889274;filename=poc.wav;msg=5.
Thanks for reporting! Fixed in 8e3fe45 (put wrong issue in commit message)
CVE-2018-7254 was assigned by MITRE to this issue.