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Date: Tue, 19 May 2015 09:39:01 +0800
From: Kai Zhao <loverszhao@...il.com>
To: john-dev@...ts.openwall.com
Subject: Fuzzing Report on 2john tools
There are 62 2john tools, 35 tools are by python, 7 tools are by perl, 20
tools are by C. So I tested the 20 C tools, since afl only support C/C++.
Among the 20 C tools, there are 12 tools with bugs:
gpg2john
keepass2john
keyring2john
keystore2john
kwallet2john
luks2john
pwsafe2john
rar2john
ssh2john
vncpcap2john
wpapcap2john
zip2john
general bugs analysis
-----------------------------
1. buffer overflow
https://github.com/magnumripper/JohnTheRipper/pull/1312
2. heap buffer overflow
Such as, forget to check the buffer size before fread() put bytes into it.
https://github.com/magnumripper/JohnTheRipper/pull/1326
https://github.com/magnumripper/JohnTheRipper/pull/1313
3. using assert() and it leads to 'Aborted'
https://github.com/magnumripper/JohnTheRipper/pull/1318
4. others
Such as, forget to check return value of jtr_fopen().
https://github.com/magnumripper/JohnTheRipper/pull/1321
Thanks,
Kai
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