Direct links to fixes
APAR status
Closed as program error.
Error description
In APAR JR45071, which is included in IBM Business Process Manager (BPM) V7.5.1.2, host name verification was introduced for the Apache Commons HTTP client 3.1 library that is shipped with IBM BPM to protect against MITM ("man-in-the-middle") attacks when SSL connections are being established. This check verifies that the host name the SSL certificate was created for matches the host name of the SSL connection. However, the host name verification might fail although no MITM attack has occurred, for example when load balancers are involved.
Local fix
Problem summary
The problem arises because the Apache Commons HTTP Client 3.1 that shipped with IBM BPM V7.5.1.2 verifies host names unconditionally. It ignores the com.ibm.ssl.performURLHostNameVerification Boolean setting in the <PROFILE_HOME>/properties/ssl.client.props configuration file.
Problem conclusion
A fix is available for IBM BPM V7.5.1.2 that ensures Apache Commons HTTP client 3.1 either verifies the host name or suppresses host name verification, depending on the com.ibm.ssl.performURLHostNameVerification Boolean setting in the <PROFILE_HOME>/properties/ssl.client.props configuration file. With the fix applied, you can disable host name verification. On Fix Central (http://www.ibm.com/support/fixcentral), search for JR51038: 1. Select IBM Business Process Manager with your edition from the product selector, the installed version to the fix pack level, and your platform, and then click Continue. 2. Select APAR or SPR, enter JR51038, and click Continue. When you download fix packages, ensure that you also download the readme file for each fix. Review each readme file for additional installation instructions and information about the fix.
Temporary fix
Not applicable
Comments
APAR Information
APAR number
JR51038
Reported component name
BPM STANDARD
Reported component ID
5725C9500
Reported release
751
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2014-08-15
Closed date
2014-10-15
Last modified date
2014-10-15
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
BPM STANDARD
Fixed component ID
5725C9500
Applicable component levels
R751 PSY
UP
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFTDH","label":"IBM Business Process Manager Standard"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5.1","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
16 October 2021