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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.

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

Off

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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
15 June 2018

UID

swg21700717