Security Bulletin: Cross-site scripting vulnerability in IBM Business Process Manager (BPM) redirect-login mechanism (CVE-2014-6101)

Security Bulletin

Summary

IBM Business Process Manager uses a mechanism to silently login users who have previously authenticated themselves. This mechanism is vulnerable to cross-site scripting attacks.

Vulnerability Details

CVE ID: CVE-2014-6101

DESCRIPTION: IBM Business Process Manager is vulnerable to cross-site scripting, which is caused by the improper validation of user-supplied input. A remote attacker might exploit this vulnerability using a specially crafted URL to execute a script in a user's web browser within the security context of the hosting web site after the URL is clicked. An attacker might use this vulnerability to steal the user's cookie-based authentication credentials.

CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/96024 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/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

Remediation/Fixes

Install the interim fix for APAR JR51211 as appropriate for your current IBM Business Process Manager version.
Note: IBM Business Process Manager V7.5 and 8.0 require a second interim fix: JR51507

Interim Fixes for APAR JR51211

Interim Fixes for APAR JR51507

Workarounds and Mitigations

The attack requires a user to access a malicious URL that the attacker has constructed for this purpose. Advise your users not to click links of unknown or untrusted origins.

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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 v2 Guide
On-line Calculator v2

Off

Change History

2014-10-30- 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

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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Tips

Security Bulletin: Cross-site scripting vulnerability in IBM Business Process Manager (BPM) redirect-login mechanism (CVE-2014-6101)