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Security Bulletin: Incorrect authorization for task assigment of ad hoc tasks in views shipped with IBM Business Process Manager (CVE-2017-1766)

Security Bulletin


Summary

An authenticated user can claim and work on ad hoc tasks without required permission in some views shipped with IBM Business Process manager

Vulnerability Details

CVEID: CVE-2017-1766
DESCRIPTION:
 Due to incorrect authorization in IBM Business Process Manager an attacker can claim and work on ad hoc tasks he is not assigned to.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/136151 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

- IBM Business Process Manager V8.5.5.0

- IBM Business Process Manager V8.5.6.0 through V8.5.6.0 CF2

- IBM Business Process Manager V8.5.7.0 through V8.5.7.0 Cumulative Fix 2017.06

- IBM Business Process Manager V8.6.0.0 through V8.6.0.0 Cumulative Fix 2017.12

Remediation/Fixes

The recommended solution is to apply the Interim Fix (iFix) or Cumulative Fix (CF) containing APAR JR58771 as soon as practical:


For IBM BPM V8.6.0.0 through V8.6.0.0 Cumulative Fix 2017.12 For IBM BPM V8.5.7.0 through V8.5.7.0 Cumulative Fix 2017.06 For IBM BPM V8.5.6.0 through V8.5.6.0 CF2
  • Install CF2 as required by iFix and then apply iFix JR58771
For IBM BPM V8.5.5.0

Workarounds and Mitigations

None

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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 v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

23 March 2018: 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 Advanced AIX, Linux, Solaris, Windows, z/OS 8.5.7.CF201706, 8.5.7.CF201703, 8.5.7.CF201612, 8.5.7.CF201609, 8.5.7.CF201606, 8.5.7, 8.5.6.2, 8.5.6.1, 8.5.6, 8.5.5
Business Integration IBM Business Process Manager Express Linux, Windows 8.6, 8.5.7.CF201706, 8.5.7.CF201703, 8.5.7.CF201612, 8.5.7.CF201609, 8.5.7.CF201606, 8.5.7, 8.5.6.2, 8.5.6.1, 8.5.6, 8.5.5
Business Integration IBM Business Process Manager Standard AIX, Linux, Solaris, Windows 8.5.7.CF201706, 8.5.7.CF201703, 8.5.7.CF201612, 8.5.7.CF201609, 8.5.7.CF201606, 8.5.7, 8.5.6.2, 8.5.6.1, 8.5.6, 8.5.5

Document information

More support for: IBM Business Process Manager
Security

Software version: 8.6.0.CF201712, 8.6

Operating system(s): AIX, Linux, Windows

Reference #: 2011866

Modified date: 23 March 2018