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Security Bulletin: The IBM BixFix platform is affected by a cross-site request forgery vulnerability (CVE-2016-0295)

Security Bulletin


Summary

A Referer check is needed for a cross-site request forgery protection

Vulnerability Details

Affected Products and Versions

CVE ID: CVE-2016-0295
DESCRIPTION:
The IBM BigFix Platform is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated user to visit a malicious Web site, a remote attacker could send a malformed HTTP request. An attacker could exploit this vulnerability to perform cross-site scripting attacks, Web cache poisoning, and other malicious activities.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111363 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)

Remediation/Fixes

The server needs to check Referrer to avoid potential cross-site request forgery.
There are 2 scenarios to cover:

1) For the fresh install scenario, the fix allows the user to configure the restrictive settings at installation time. This fix has been applied to 9.5 (9.5.2).

2) For the upgrade scenario, instructions are provided to manually configure it to remediate the vulnerability.

Specifically, the fresh installation scenario doesn't apply to 9.0, 9.1 and 9.2 so for these releases instructions are provided to configure the check as part of an existing installation.

BigFix 9.5:

For fresh installs, please use BigFix 9.5.2 or greater , which will auto-configure the appropriate remediation.

Please note that product previously referred to as Tivoli Endpoint Manager and/or IBM Endpoint Manager and/or IBM BigFix Endpoint Manager are all previous names for the same product, and which is now referred to as IBM Bigfix. The underlying product is still the same and only the name has been changed.

Workarounds and Mitigations

BigFix 9.0, 9.1, 9.2, 9.5


For existing installations, to remediate this vulnerability please use the BigFix Console's "Edit Computer Settings..." dialog to set _HTTPServer_Referrer_CheckEnabled=1

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References

Related information

Change History

8 July 2016: 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
Security IBM BigFix Platform

Document information

More support for: IBM BigFix Platform

Software version: 9.0, 9.1, 9.2, 9.5

Operating system(s): Platform Independent

Software edition: Edition Independent

Reference #: 1985830

Modified date: 04 August 2016