AirSnort v0.2.7 Stack Corruption DOS Aug 09 2016 03:49AM
hyp3rlinx lycos com
[+] Credits: Hyp3rlinx

[+] Website: hyp3rlinx.altervista.org

[+] Source: http://hyp3rlinx.altervista.org/advisories/AIRSNORT-STACK-CORRUPTION-DOS

[+] ISR: ApparitionSec


AirSnort v0.2.7

AirSnort is a wireless LAN (WLAN) tool which cracks encryption keys on 802.11b WEP networks. AirSnort operates
by passively monitoring transmissions, computing the encryption key when enough packets have been gathered.

Vulnerability Type:
Stack Corruption DOS

Vulnerability Details:

When open / load a corrupt 'crackfile' with bunch of 'AAAAAAAAAAAAAAAAAAAAAAAAAA's... airsnort crashes and stack is corrupted.
Under File / Load "Crack" File... open corrupt crackfile with bunch of 'A' chars then BOOM...

Tested successfully on Linux OS.

GDB reg dump

Program received signal SIGSEGV, Segmentation fault.
0xb72780e5 in __mempcpy_ia32 () from /lib/libc.so.6
(gdb) info r
eax 0x4141413b 1094795579
ecx 0x3e3 995
edx 0x829e9d8 136964568
ebx 0xb73c1000 -1220800512
esp 0xbfffe1dc 0xbfffe1dc
ebp 0x0 0x0
esi 0xb67cf00a -1233326070
edi 0x0 0
eip 0xb72780e5 0xb72780e5 <__mempcpy_ia32+21>
eflags 0x210203 [ CF IF RF ID ]
cs 0x73 115
ss 0x7b 123
ds 0x7b 123
es 0x7b 123
fs 0x0 0
gs 0x33 51

[+] Disclaimer
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and
that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit
is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility
for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information
or exploits by the author or elsewhere.


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