Re: Need help in flushing DNS

[George Herbert <george.herbert () gmail com>]

The indications and claim are that the root cause was registrar internal
goof, not hostile action against name servers.

The story is not yet detailed enough to add up; getting from point A to
point B requires steps that so far don't really make sense.  A more
detailed explanation is hopefully to be forthcoming...



On Fri, Jun 21, 2013 at 5:22 PM, Glen Kent <glen.kent () gmail com> wrote:

> Hi,
>
> Do we know which DNS server started leaking the poisoned entry?
>
> Being new to this, i still dont understand how could a hacker gain access
> to the DNS server and corrupt the entry there? Wouldnt it require special
> admin rights, etc. to log in?
>
> Glen
>
>
> On Thu, Jun 20, 2013 at 11:32 AM, Paul Ferguson <fergdawgster () gmail com
> > wrote:
>
> > Hanlon's razor? Misconfiguration. Perhaps not done in malice, but I
> > have no idea where the poison leaked in, or why. :-)
> >
> > - ferg
> >
> > On Wed, Jun 19, 2013 at 10:49 PM, Alex Buie <alex.buie () frozenfeline net>
> > wrote:
> >
> > > Anyone have news/explanation about what's happening/happened?
> > >
> > >
> > > On Wed, Jun 19, 2013 at 10:34 PM, Paul Ferguson <
> fergdawgster () gmail com
> > > wrote:
> > >
> > > > Sure enough:
> > > >
> > > >
> > > >
> > > >  ; <<>> DiG 9.7.3 <<>> @localhost yelp.com A
> > > >  ; (1 server found)
> > > >  ;; global options: +cmd
> > > >  ;; Got answer:
> > > >  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53267
> > > >  ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
> > > >
> > > >  ;; QUESTION SECTION:
> > > >  ;yelp.com. IN A
> > > >
> > > >  ;; ANSWER SECTION:
> > > >  yelp.com. 300 IN A 204.11.56.20
> > > >
> > > >  ;; Query time: 143 msec
> > > >  ;; SERVER: 127.0.0.1#53(127.0.0.1)
> > > >  ;; WHEN: Thu Jun 20 07:33:13 2013
> > > >  ;; MSG SIZE  rcvd: 42
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > NetRange: 204.11.56.0 - 204.11.59.255
> > > > CIDR: 204.11.56.0/22
> > > > OriginAS: AS40034
> > > > NetName: CONFLUENCE-NETWORKS--TX3
> > > > NetHandle: NET-204-11-56-0-1
> > > > Parent: NET-204-0-0-0-0
> > > > NetType: Direct Allocation
> > > > Comment: Hosted in Austin TX.
> > > > Comment: Abuse :
> > > > Comment: abuse () confluence-networks com
> > > > Comment: +1-917-386-6118
> > > > RegDate: 2012-09-24
> > > > Updated: 2012-09-24
> > > > Ref: http://whois.arin.net/rest/net/NET-204-11-56-0-1
> > > >
> > > > OrgName: Confluence Networks Inc
> > > > OrgId: CN
> > > > Address: 3rd Floor, Omar Hodge Building, Wickhams
> > > > Address: Cay I, P.O. Box 362
> > > > City: Road Town
> > > > StateProv: Tortola
> > > > PostalCode: VG1110
> > > > Country: VG
> > > > RegDate: 2011-04-07
> > > > Updated: 2011-07-05
> > > > Ref: http://whois.arin.net/rest/org/CN
> > > >
> > > > OrgAbuseHandle: ABUSE3065-ARIN
> > > > OrgAbuseName: Abuse Admin
> > > > OrgAbusePhone: +1-917-386-6118
> > > > OrgAbuseEmail: abuse () confluence-networks com
> > > > OrgAbuseRef: http://whois.arin.net/rest/poc/ABUSE3065-ARIN
> > > >
> > > > OrgNOCHandle: NOCAD51-ARIN
> > > > OrgNOCName: NOC Admin
> > > > OrgNOCPhone: +1-415-462-7734
> > > > OrgNOCEmail: noc () confluence-networks com
> > > > OrgNOCRef: http://whois.arin.net/rest/poc/NOCAD51-ARIN
> > > >
> > > > OrgTechHandle: TECHA29-ARIN
> > > > OrgTechName: Tech Admin
> > > > OrgTechPhone: +1-415-358-0858
> > > > OrgTechEmail: ipadmin () confluence-networks com
> > > > OrgTechRef: http://whois.arin.net/rest/poc/TECHA29-ARIN
> > > >
> > > >
> > > > #
> > > > # ARIN WHOIS data and services are subject to the Terms of Use
> > > > # available at: https://www.arin.net/whois_tou.html
> > > > #
> > > >
> > > > - ferg
> > > >
> > > >
> > > >
> > > > On Wed, Jun 19, 2013 at 10:30 PM, Grant Ridder <
> shortdudey123 () gmail com
> > > > wrote:
> > > >
> > > > > Yelp is evidently also affected
> > > > >
> > > > > On Wed, Jun 19, 2013 at 10:19 PM, John Levine <johnl () iecc com>
> wrote:
> > > > > > > Reaching out to DNS operators around the globe. Linkedin.com has
> had
> > > > some
> > > > > > issues with DNS
> > > > > > > and would like DNS operators to flush their DNS. If you see
> > > > > > www.linkedin.com resolving NS to
> > > > > > > ns1617.ztomy.com or ns2617.ztomy.com then please flush your DNS.
> > > > > > >
> > > > > > > Any other info please reach out to me off-list.
> > > > > >
> > > > > > While you're at it, www.usps.com, www.fidelity.com, and other well
> > > > > > known sites have had DNS poisoning problems.  When I restarted my
> > > > > > cache, they look OK.
> > > >
> > > >
> > > >
> > > > --
> > > > "Fergie", a.k.a. Paul Ferguson
> > > >  fergdawgster(at)gmail.com
> >
> >
> >
> > --
> > "Fergie", a.k.a. Paul Ferguson
> >  fergdawgster(at)gmail.com



-- 
-george william herbert
george.herbert () gmail com