bugtraq - BIND remote exploit (low severity) [Fwd: Internet Systems Consortium Security Advisory.]

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Message-ID: <45B8C0F5.7080207@hurricanelabs.com>
Date: Thu, 25 Jan 2007 09:38:45 -0500
From: Lebbeous Weekley <lebbeous@...ricanelabs.com>
To: full-disclosure@...ts.grok.org.uk, vulnwatch@...nwatch.org,
	bugtraq@...urityfocus.com
Subject: BIND remote exploit (low severity) [Fwd: Internet Systems Consortium
 Security Advisory.]

Hadn't seen this on here yet.

	Lebbeous Weekley

----- "Mark Andrews" <Mark_Andrews@....org> wrote:
> Internet Systems Consortium Security Advisory.
> 		   BIND 9: dereferencing freed fetch context
>                              12 January 2007
> 
> Versions affected:
> 
> 	BIND 9.3.0, 9.3.1, 9.3.2, 9.3.3
>         BIND 9.4.0a1, 9.4.0a2, 9.4.0a3, 9.4.0a4, 9.4.0a5, 9.4.0a6,
> 9.4.0b1
> 	     9.4.0b2, 9.4.0b3, 9.4.0b4, 9.4.0rc1 
> 	BIND 9.5.0a1 (Bind Forum only)
> 
> Severity: Low
> Exploitable: Remotely
> 
> Description:
> 
> 	It is possible for the named to dereference (read) a freed
> 	fetch context.  This can cause named to exit unintentionally.
> 
> Workaround:
> 
> 	Disable / restrict recursion (to limit exposure).
> 
> Fix:
> 
> 	Upgrade to BIND 9.2.8, BIND 9.3.4 or BIND 9.4.0rc2.
> 	Additionally this will be fixed in the upcoming BIND 9.5.0a2.
> 
> Revision History: