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Security Bulletin: Insufficient authorization in Service REST API and cross site scripting vulnerability in REST API affecting IBM Business Process Manager (CVE-2015-1905, CVE-2015-1906)

Security Bulletin


Summary

IBM Business Process Manager REST API is vulnerable to cross site scripting due to insufficiently restricted parameter values for controlling content types. IFixes shipped with this advisory also close an additional vulnerability due to insufficient authorization checks on interacting with services via the REST API.

Vulnerability Details

CVEID: CVE-2015-1905
DESCRIPTION:
 IBM Business Process Manager allows users to manipulate variable values of tasks that these users are not authorized to see or update.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/101729 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:N/I:P/A:N)

CVEID: CVE-2015-1906
DESCRIPTION:
 IBM Business Process Manager is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability using a specially-crafted URL to execute script in a victim's Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.
CVSS Base Score: 3.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/101730 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:S/C:N/I:P/A:N)

Affected Products and Versions

  • IBM Business Process Manager V7.5.x through V8.5.6.0

Remediation/Fixes

Install the interim fix for APAR JR52772 as appropriate for your current IBM Business Process Manager version.

  • IBM Business Process Manager Express
  • IBM Business Process Manager Standard
  • IBM Business Process Manager Advanced
  • If you are on earlier unsupported releases, IBM strongly recommends to upgrade.
  • 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

    Related information

    Change History

    2015-07-17: Original 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, Linux zSeries, Windows 8.5.6, 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 Standard Security AIX, Linux, Linux zSeries, Solaris, Windows 8.5.6, 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

    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, 8.5.6

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

    Reference #: 1700717

    Modified date: 17 July 2015