SI56643 - F/LDAP OVERRIDES GSKIT'S DEFAULT CIPHER SUITES SO SOME VULNE

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.

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

-------------------------------------------------
Currently, LDAP overrides GSKit's default cipher suites.  As a
result, some vulnerable ciphers are enabled which causes
security weakness for an application. These vulnerable ciphers
include RC4-40-MD5, RC2-40-MD5, DES-56, RC4-128-MD5 and
RC4-128-SHA which are referred to in either CVE-2015-0138 or
CVE-2015-2808.

CORRECTION FOR APAR 'SE61616' :
-------------------------------
The vulnerable ciphers will be removed from the LDAP default
list.
Note: If an application depends on these removed vulnerable
ciphers, it will fail after applying this PTF.

It is strongly suggested that these vulnerable ciphers no longer
be used by the applications.  If these vulnerable ciphers are
required temporarily, they can be enabled using LDAP WebAdmin,
iNavigator and ldapmodify to change either the attribute
ibm-slapdSslCipherSpec or the attribute ibm-slapdSslCipherSpecs
of the entry 'cn=SSL, cn=Configuration' to the correct values.

CIRCUMVENTION FOR APAR 'SE61616' :
----------------------------------
None.


Activation Instructions


None.




Special Instructions

After applying or removing this PTF, restart the LDAP server as follow:
1) If the LDAP server is started, end it by running ENDTCPSVR
SERVER(*DIRSRV) INSTANCE(INSTANCE_NAME) from a command line or by using
IBM Systems Director Navigator for i.
2) Start the LDAP server by running STRTCPSVR SERVER(*DIRSRV)
INSTANCE(INSTANCE_NAME) from a command line or by using IBM Systems
Director Navigator for i.

********************************************************************
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 SI56679 :
=================================================

If you do not use the LDAP server, no action is required. Otherwise,
after applying or removing this PTF, restart the LDAP server as follow:
1) If the LDAP server is started, end it by running ENDTCPSVR
SERVER(*DIRSRV) INSTANCE(INSTANCE_NAME) from a command line or by using
IBM Systems Director Navigator for i.
2) Start the LDAP server by running STRTCPSVR SERVER(*DIRSRV)
INSTANCE(INSTANCE_NAME) from a command line or by using IBM Systems
Director Navigator for i.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   SI56679      INCORROUT-HLIC-94XXCOM R720 LDAP SERVER DOES NOT CORRECTLY A
   SI51741      OSP-BASEDIR-INCORROUT LDAP bug fixes for LDAP 7.2
   SI51741      OSP-MSGCPF2111-PAR CPF2111 FOR LIBRARY QUSRDIRDB WHEN DOING
   SI51741      OSP-OTHER-UNPRED TRAP FOR LDAP, LDAP server hangs, SP/QGLDRD

Summary Information

IBM i Support