Home page logo
/

fulldisclosure logo Full Disclosure mailing list archives

Re: DNS and Checkpoint
From: Ray P <sixsigma98 () hotmail com>
Date: Thu, 10 Jul 2008 01:35:09 +0000


The article you're looking at is for their SmartDefense product, an add-in to Firewall-1. Supposedly it will protect a 
DNS server behind the firewall from this vulnerability.

Ray

Date: Wed, 9 Jul 2008 15:00:39 +0100
From: imipak () gmail com
To: full-disclosure () lists grok org uk
Subject: [Full-disclosure] DNS and Checkpoint

Hello everyone,

I've had a report from someone with clue (and tcpdump) that a properly
functioning DNS resolver that correctly uses randomised source ports
magically becomes vulnerable once the traffic's passed through a
Checkpoint firewall, where Dan Kaminsky's tool shows:

    x.y.z.155:56978 TXID=712
    x.y.z.155:56979 TXID=45713
    x.y.z.155:56980 TXID=63532
    x.y.z.155:56981 TXID=7243
    x.y.z.155:56982 TXID=17620

(note the incrementing port numbers.)

Can anyone else confirm this behaviour?

Checkpoint are one of the dozens of vendors listed on the CERT
advisory as "Status: Unknown"
http://www.kb.cert.org/vuls/id/MIMG-7ECL6B

They do have an advisory up:
    http://www.checkpoint.com/defense/advisories/public/2008/cpai-01-Jul.html

I don't have the login needed to read the whole thing, but the front
page just says:

"Protection provided by:
       VPN-1:    * NGX R65
                       * NGX R62
                       * NGX R61
                       * NGX R60
        [...etc, etc...] "


cheers

=i

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

_________________________________________________________________
Need to know now? Get instant answers with Windows Live Messenger.
http://www.windowslive.com/messenger/connect_your_way.html?ocid=TXT_TAGLM_WL_messenger_072008
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]
AlienVault