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Cannot read from /dev/urandom #511

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
Hi,
The command I used : 
> reaver -i mon0 -b [THE:MAC:HERE!] -vv -p 9998

[+] 93.92% complete @ 2013-05-25 00:02:00 (1 seconds/pin)
[+] Trying pin 99983239
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
[+] Sending M2 message
[+] Received M3 message
[+] Sending M4 message
[+] Received WSC NACK
[+] Sending WSC NACK
[+] Trying pin 99983246
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
[+] Sending M2 message
[+] Received M3 message
[+] Sending M4 message
[+] Received WSC NACK
[+] Sending WSC NACK
Could not open /dev/urandom.

and I'm getting :

Could not open /dev/urandom.
[+] Trying pin 99983253
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
Could not open /dev/urandom.
[+] Sending M2 message
[+] Received M1 message
[+] Sending WSC NACK
[+] Sending WSC NACK
[!] WPS transaction failed (code: 0x03), re-trying last pin

After it over and over again.
I can cat the /dev/urandom from terminal while I'm getting this message.

Thank you

Original issue reported on code.google.com by arshamsh...@gmail.com on 24 May 2013 at 11:08

GoogleCodeExporter commented 9 years ago 
already know what is pin? 
try:
mknod -m 0444 /dev/urandom c 1 9

Original comment by deltomaf...@gmail.com on 27 May 2013 at 2:10

GoogleCodeExporter commented 9 years ago 
I have the same problem, it seems to be related to libpcap which open a pipe 
but doesn't close it, so i get to many opened files.

$ sudo ls -l /proc/`pidof reaver`/fd | wc -l

will give you the number of files open with reaver.

I got the issue with the latest revision (119).

Original comment by bvan...@gmail.com on 18 Nov 2013 at 3:57

GoogleCodeExporter commented 9 years ago 
(libpcap version 1.4.0)

Original comment by bvan...@gmail.com on 18 Nov 2013 at 3:59

GoogleCodeExporter commented 9 years ago 
If it's a problem with too many open files, I talked with the libpcap guys, and 
it will be fixed in libpcap 1.5.0.

I tried reaver with libpcap 1.5.0 but it failed to work properly, so i guess 
they will have to update the code.

You can fix the problem temporarily by setting max open files to 65535 instead 
of 1024:
# ulimit -n 65536
# reaver <parameters>

Original comment by bvan...@gmail.com on 19 Nov 2013 at 5:40