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SI62945 - OSP-DNS/Fix CVE-2016-2775, CVE-2016-2776 and CVE-2016-8864 f

PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-DNS/Fix CVE-2016-2775, CVE-2016-2776 and CVE-2016-8864 f


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-2016-2775, CVE-2016-2776 and CVE-2016-8864.
CVE-2016-2775: A query name which is too long can cause a
segmentation fault in lwresd.
CVE-2016-2776: A defect in the rendering of messages into
packets can cause named to exit with an assertion failure in
buffer.c while constructing a response to a query that meets
certain criteria. This assertion can be triggered even if the
apparent source address isn't allowed to make queries (i.e.
doesn't match 'allow-query').
CVE-2016-8864: A defect in BIND's handling of responses
containing a DNAME answer can cause a resolver to exit after
encountering an assertion failure in db.c or resolver.c.

CORRECTION FOR APAR 'SE66025' :
-------------------------------
Fixed the problems with the ISC-provided fixes.

CIRCUMVENTION FOR APAR 'SE66025' :
----------------------------------
None.


Activation Instructions

None.




Special Instructions

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>)

********************************************************************
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
--------------  ------------------------------------------------------------
   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.......................... SE66025
Superseded by:...................... View fix details for PTF SI70733
Recompile........................... N
Library............................. QDNS
MRI Feature ........................ NONE
Cum Level........................... C7061730


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Document information

More support for: i family

Software version: V7R3M0

Operating system(s): OS/400

Reference #: SI62945

Modified date: 01 December 2016