Thanks Mark.

________________________________
From: bind-users <bind-users-boun...@lists.isc.org> on behalf of Mark Andrews 
<ma...@isc.org>
Sent: Monday, March 5, 2018 11:51:06 AM
To: Nagesh Thati
Cc: bind-users@lists.isc.org
Subject: Re: servfail-ttl 0; option in the named.conf global section is 
crashing the named (BIND 9.10.6)


> On 5 Mar 2018, at 4:50 pm, Nagesh Thati <tcpnag...@gmail.com> wrote:
>
> Hello,
>
> I have added a servfail-ttl 0; parameter in the named.conf file in the global 
> section and restarted the named, but named is not coming up and I don't see 
> any errors printing in the named.log. When I do a named-checkconf on 
> named.conf it is giving error as UNKNOWN OPTION servfail-ttl. The version I 
> am using is BIND 9.10.6 stable build. Can some one help me on this.
> Thanks.
>
> To fix this bug I have added above parameter    CVE-2018-5734: A malformed 
> request can trigger an assertion failure in badcache.c

CVE-2018-5734 does not apply to BIND 9.10.6 (which doesn’t have a servfail-ttl 
option).

CVE-2018-5734 applies to BIND 9.10.5-S1 to 9.10.5-S4, BIND 9.10.6-S1, 9.10.6-S2 
(these versions have servfail-ttl as a option).

"named -v” will report which version of named you are running.

e.g
% named -v
BIND 9.10.6 <id:9d1ea0b7fe>
%

Parsing errors messages will be logged in the system log as named has not yet 
got far enough into the startup process to know to log the messages elsewhere.

Mark

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--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: ma...@isc.org

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