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SI68466 - OSP-DNS/Fix CVE-2018-5740 for DNS bind

PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

OSP-DNS/Fix CVE-2018-5740 for DNS bind


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
NONE



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the license agreement which
accompanied, or was contained in, the Program for which you are obtaining
the PTF.  You are not authorized to install or use the PTF except as part
of a Program for which you have a valid Proof of Entitlement.

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REGARDING THE PTF.

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APAR Error Description / Circumvention

-------------------------------------------------
ISC released CVE-2018-5740.
CVE-2018-5740: "deny-answer-aliases" is a little-used feature
intended to help recursive server operators protect end users
against DNS rebinding attacks, a potential method of
circumventing the security model used by client browsers.
However, a defect in this feature makes it easy, when the
feature is in use, to experience an assertion failure in named.

CORRECTION FOR APAR 'SE70070' :
-------------------------------
Fixed the problem by upgrading BIND to 9.11.4.

CIRCUMVENTION FOR APAR 'SE70070' :
----------------------------------
None.


Activation Instructions

None.




Special Instructions

IF DNS SERVER IS NOT USED, THE PTF CAN BE IGNORED AND NO ACTION IS
REQUIRED. OTHERWISE, PLEASE SAVE DOMAIN NAME SERVER DATA AS A BACKUP
BEFORE APPLYING THE PTF. AND THEN FOLLOW THESE STEPS:
1. END ALL DOMAIN NAME SERVERS ON THE SYSTEM: ENDTCPSVR SERVER(*DNS)
DNSSVR(*ALL)
2. APPLY THE PTF
3. START ALL DOMAIN NAME SERVERS OR A SPECIFIED ONE: STRTCPSVR
SERVER(*DNS) DNSSVR(*ALL) OR STRTCPSVR SERVER(*DNS) DNSSVR(<DNS_NAME>)

********************************************************************
THE FOLLOWING ARE SUPERSEDED SPECIAL INSTRUCTIONS. IF THE SUPERSEDED
PTF HAS ALREADY BEEN APPLIED AND ITS SPECIAL INSTRUCTION FOLLOWED,
IT IS NOT NECESSARY TO FOLLOW THAT SPECIAL INSTRUCTION AGAIN.
********************************************************************

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF SI59086 :
=================================================

END DOMAIN NAME SERVERS ON THE SYSTEM
EXAMPLE: ENDTCPSVR SERVER(*DNS) DNSSVR(*ALL)
THEN APPLY THE PTF
START DOMAIN NAME SERVER AGAIN
EXAMPLE: STRTCPSVR SERVER(*DNS) DNSSVR(<DNS_NAME>)


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   SI66812      OSP-DNS/Fix CVE-2017-3145 for DNS bind
   SI65336      OSP-DNS/Refresh DNS BIND to fix CVE-2017-3142 and CVE-2017-3
   SI64614      OSP-DNS/Fix CVE-2017-3136 and CVE-2017-3137 for DNS bind
   SI63767      OSP-DNS/Fix CVE-2016-9131, CVE-2016-9444 and CVE-2017-3135 f
   SI62945      OSP-DNS/Fix CVE-2016-2775, CVE-2016-2776 and CVE-2016-8864 f
   SI60386      OSP-DNS/Fix CVE-2016-1285, CVE-2016-1286 and CVE-2016-2088 f
   SI59480      OSP-DNS/Fix CVE-2015-8704 and CVE-2015-8705 for DNS bind
   SI59086      OSP-DNS/Fix CVE-2015-8000 for DNS bind

Summary Information

System.............................. i
Models..............................
Release............................. V7R3M0
Licensed Program............... 5770SS1
APAR Fixed.......................... SE70070
Superseded by:...................... View fix details for PTF SI70733
Recompile........................... N
Library............................. QDNS
MRI Feature ........................ NONE
Cum Level........................... C9116730


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Document information

More support for: i family

Software version: V7R3M0

Operating system(s): OS/400

Reference #: SI68466

Modified date: 06 November 2018