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Security Bulletin: Malicious File Download vulnerability in IBM Business Process Manager (BPM) and WebSphere Lombardi Edition (WLE) - CVE-2016-9693

Security Bulletin


Summary

A comma separated file (CSV) download feature exists in IBM BPM and WLE and is available for anonymous users. An attacker can craft a URL that can trigger a download of attacker-supplied content under an attacker-supplied file name onto the victim's machine.

Vulnerability Details

CVEID: CVE-2016-9693
DESCRIPTION:
 IBM Business Process Manager has a file download capability that is vulnerable to a set of attacks. Ultimately, an attacker can cause an unauthenticated victim to download a malicious payload. An existing file type restriction can be bypassed so that the payload might be considered executable and cause damage on the victim's machine.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/119517 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L)

Affected Products and Versions

- WebSphere Lombardi Edition V7.2.0.0 - V7.2.0.5
- IBM Business Process Manager Advanced V7.5.0.0 - V7.5.1.2
- IBM Business Process Manager Advanced V8.0.0.0 - V8.0.1.3
- IBM Business Process Manager Advanced V8.5.0.0 - V8.5.7.0 including cumulative fix 2016.12

Remediation/Fixes

Install IBM BPM or WLE interim fix JR57149 as appropriate for your current version.


As IBM Business Process Manager V7.5 and WebSphere Lombardi Edition are out of general support, customers with a support extension contract can contact IBM support to request the fix.

The fix disables the vulnerable URL and uses HTML5 features to trigger CSV download without server interaction.

For WebSphere Lombardi Edition 7.2.0.0 through 7.2.0.5

For IBM BPM V7.5.0.0 through V7.5.1.2:
For IBM BPM V8.0.0.0 through V8.0.1.3
For IBM BPM V8.5.0.0 through V8.5.0.2
For IBM BPM V8.5.5.0
For IBM BPM V8.5.6.0 through V8.5.6.0 CF2
  • Install CF2 as required by iFix and then apply iFix JR57149

For IBM BPM V8.5.7.0 through V8.5.7.0 CF 2016.12

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

Acknowledgement

The vulnerability was reported to IBM by Nalla Muthu S and Prasath K

Change History

24 Feb 2017: 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 Express Security Linux, Windows 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, 8.5.0.2, 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 Standard Security AIX, Linux, Solaris, Windows 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, 8.5.0.2, 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 Security AIX, HP-UX, Linux, Solaris, Windows 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, 8.5.0.2, 8.5.5, 8.5.6, 8.5.6.1, 8.5.6.2, 8.5.7.CF201606, 8.5.7.CF201609, 8.5.7.CF201612, 8.5.7

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

Reference #: 1998655

Modified date: 16 March 2017