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SI74160 - OSP-DNS/FIX CVE-2020-8622 and CVE-2020-8624

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

OSP-DNS/FIX CVE-2020-8622 and CVE-2020-8624


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
DIST 5733SC1  V7R2M0    SI70596   NONE     0001



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.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.

The applicable license agreement may have been provided to you in printed
form and/or may be viewed using the Work with Software Agreements (WRKSFWAGR)
CL command.


APAR Error Description / Circumvention

-------------------------------------------------
ISC released CVE-2020-8622 and CVE-2020-8624.
CVE-2020-8622: Attempting to verify a truncated response to a
TSIG-signed request leads to an assertion failure.

CVE-2020-8624: An attacker who has been granted privileges to
change a specific subset of the zone's content could abuse these
unintended additional privileges to update other contents of the
zone.

CORRECTION FOR APAR 'SE74280' :
-------------------------------
Fixed the problems with the ISC-provided fixes.

CIRCUMVENTION FOR APAR 'SE74280' :
----------------------------------
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 SI70733 :
=================================================

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>)

NOTE: OPENSSL 1.1.1 MUST BE AVAILABLE.

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF SI68466 :
=================================================

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>)

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
--------------  ------------------------------------------------------------
   SI73483      OSP-DNS/FIX CVE-2020-8616 AND CVE-2020-8617 FOR DNS BIND
   SI70733      OSP-DNS/FIX CVE-2019-6471 FOR DNS BIND
   SI69885      OSP-DNS/Fix CVE-2018-5743 for DNS bind
   SI69119      OSP-DNS/Fix CVE-2018-5744, CVE-2018-5745 and CVE-2019-6465 f
   SI68707      OSP-DNS/Fix CVE-2018-5741 for DNS bind
   SI68466      OSP-DNS/Fix CVE-2018-5740 for DNS bind
   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..........................View details for APAR SE74280
Superseded by:......................
Recompile...........................N
Library.............................QDNS
MRI Feature ........................NONE
Cum Level...........................C1098730


IBM i Support

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Document Information

Modified date:
18 April 2021