IBM Support

Security Bulletin: Internal service types can be invoked in IBM Business Process Manager (BPM) and WebSphere Lombardi Edition (WLE) Process Portal (CVE-2015-0110)

Security Bulletin


Summary

When invoking a service using the executeServiceByName URL, there is no access restriction based on the service type and services that were meant for internal use only are available for authenticated users.

Vulnerability Details

CVEID: CVE-2015-0110

DESCRIPTION:
 IBM Business Process Manager are vulnerable to an authenticated remote attacker accessing services that were meant for internal use only.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/99630 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:N/I:P/A:N)

Affected Products and Versions

  • IBM Business Process Manager Standard V7.5.x, 8.0.x, 8.5.x
  • IBM Business Process Manager Express V7.5.x, 8.0.x, 8.5.x
  • IBM Business Process Manager Advanced V7.5.x, 8.0.x, 8.5.x
  • WebSphere Lombardi Edition 7.2.x

If you are using an earlier unsupported version, IBM strongly recommends to upgrade.

Remediation/Fixes

Install the interim fix for APAR JR52126 as appropriate for your current IBM Business Process Manager or IT06189 for your current WebSphere Lombardi Edition environment.


Before this fix, a user could start System Tasks or User Tasks that were not exposed to this user via undocumented URLs.
The new functionality is:
"With URLs it is possible,
  • to start Human Services that are exposed to the logged-on user
  • to start Ajax Services.

Execution of other service types is rejected, unless
  • the request arrives on the Process Center and
  • the request was issued by Process Designer in a playback session and
  • the user that issued this request is a member of the tw_authors group and
  • the user is granted Read access to the process app.

If this behaviour conflicts with existing solutions, it is possible to disable the new checks.
To do this, add
<server merge="mergeChildren">
<web-workflow-manager merge="mergeChildren">
<enforce-correct-service-type-for-execute-service-by-name>false</enforce-correct-service-type-for-execute-service-by-name>
</web-workflow-manager>
</server>

to 100Custom.xml

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

Important note

IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.

References

Complete CVSS v2 Guide
On-line Calculator v2

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

2015-03-13 - initial version published

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Cross reference information
Segment Product Component Platform Version Edition
Business Integration IBM Business Process Manager Standard Security AIX, Linux, Linux zSeries, Solaris, Windows 8.5.5, 8.5.0.1, 8.5, 8.0.1.3, 8.0.1.2, 8.0.1.1, 8.0.1, 8.0, 7.5.1.2, 7.5.1.1, 7.5.1, 7.5.0.1, 7.5
Business Integration IBM Business Process Manager Express Security Linux, Linux zSeries, Windows 8.5.5, 8.5.0.1, 8.5, 8.0.1.3, 8.0.1.2, 8.0.1.1, 8.0.1, 8.0, 7.5.1.2, 7.5.1.1, 7.5.1, 7.5.0.1, 7.5
Business Integration WebSphere Lombardi Edition AIX, HP-UX, Linux, Linux zSeries, Linux/x86, Platform Independent, Solaris, Windows, Windows Vista, Windows XP 7.2.0.5, 7.2.0.4, 7.2.0.3, 7.2.0.2, 7.2.0.1, 7.2

Document information

More support for: IBM Business Process Manager Advanced
Security

Software version: 7.5, 7.5.0.1, 7.5.1, 7.5.1.1, 7.5.1.2, 8.0, 8.0.1, 8.0.1.1, 8.0.1.2, 8.0.1.3, 8.5, 8.5.0.1, 8.5.5

Operating system(s): AIX, Linux, Solaris, Windows, z/OS

Reference #: 1694940

Modified date: 13 March 2015