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

From: Lebbeous Weekley <lebbeous_at_hurricanelabs.com>
Date: Thu, 25 Jan 2007 09:38:45 -0500

Hadn't seen this on here yet.

Lebbeous Weekley

----- "Mark Andrews" <Mark_Andrews_at_isc.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:
Received on Jan 25 2007