PTF Cover Letter
PTF ( Program Temporary Fixes ) Cover letter
LIC-SSL Remove SSLv3 and RC4 from System SSL default
Pre/Co-Requisite PTF / Fix List
REQ LICENSED PTF/FIX LEVEL
TYPE PROGRAM REL NUMBER MIN/MAX OPTION
---- -------- --- ------- ------- ------
TR 5770999 710 MF99010 00/00 0000
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 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.
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.
APAR Error Description / Circumvention
-----------------------------------------------
The SSLv3 protocol and RC4 cipher suites should not be used due
to the POODLE and Bar Mitzvah vulnerabilities.
CORRECTION FOR APAR MA44716 :
-----------------------------
An administrator can completely disable SSLv3 and RC4 cipher
suites for System SSL using the QSSLPCL and QSSLCSL system
values without this PTF.
This PTF removes SSLv3 from the eligible default protocol list
and the RC4 cipher suites from the eligible default cipher
specification list when they remain enabled by the system
values.
Applications coded to use the default values will no longer
negotiate the use of SSLv3 and RC4 with peers.
If SSLv3 or RC4 support is required by peers of such an
application after this PTF is applied, the values can be added
back to the System SSL eligible default lists using System
Service Tools (SST) Advanced Analysis Command SSLCONFIG.
To change the System SSL settings with the Start System Service
Tools (STRSST) command, follow these steps:
1. Open a character-based interface.
2. On the command line, type STRSST.
3. Type your service tools user name and password.
4. Select option 1 (Start a service tool).
5. Select option 4 (Display/Alter/Dump).
6. Select option 1 (Display/Alter storage).
7. Select option 2 (Licensed Internal Code (LIC) data).
8. Select option 14 (Advanced analysis).
9. Select option 1 (SSLCONFIG).
10. Enter -h
This will show the help screen that describes the input strings
to change the System SSL setting for -eligibleDefaultProtocols
and -eligibleDefaultCipherSuites.
CIRCUMVENTION FOR APAR MA44716 :
--------------------------------
None.
Activation Instructions
None.
Special Instructions
None.
Default Instructions
THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.
Supersedes
PTF/FIX NO(S). APAR TITLE LINE
-------------- ------------------------------------------------------------
MF59895 LIC-SOCKETS AUDIT RECORD SK SUBTYPE A TELNET
MF51827 TCPIP-TELNET-UNPRED PACKET TCPFIN ACK PSH NOT SENT.
MF48794 LIC-COMM-TCPIP-PERFM TIMING ISSUE WITH SSL TELNET CONNECTION
Summary Information
System.............................. | i |
Models.............................. | |
Release............................. | V7R1M0 |
Licensed Program............... | 5770999 |
APAR Fixed.......................... | View details for APAR MA44716 |
Superseded by:...................... | View fix details for PTF MF99011 |
Recompile........................... | N |
Library............................. | QSYS |
MRI Feature ........................ | NONE |
Cum Level........................... | C5317710 |
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Document Information
Modified date:
10 July 2015