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Security Bulletin: Security Bulletin: IBM Connections Security Refresh for CVE-2016-0310

Security Bulletin


IBM Connections Security Update for CVE-2016-0310. There is a vulnerability in IBM Connection 5.5 and earlier, see details below for remediation information.

Vulnerability Details

The following vulnerability exists in IBM Connections 5.5 and earlier, see fix details and apply as detailed in the Remediation section.

CVEID: CVE-2016-0310
DESCRIPTION: IBM Connections 5.5 and earlier is vulnerable to possible host header injection attack that could cause navigation to the attacker's domain.
CVSS Base Score: 4.6
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N)

Affected Products and Versions

The following versions of IBM Connections are impacted:

IBM Connections 5.5
IBM Connections 5.0
IBM Connections 4.5
IBM Connections 4.0


Apply the appropriate fix pack or APAR to remediate these issues as per this table. Note, if possible, it is always recommended to upgrade to the most recent release of IBM Connections.

Product Version Remediation
IBM Connections 5.5 Apply IBM Connections 5.5 CR1 and then apply Interim Fix APAR LO89575
IBM Connections 5.0 Upgrade to IBM Connections 5.0 CR4 and then apply Interim Fix APAR LO89575
IBM Connections 4.5 Upgrade to IBM Connections 4.5 CR5 and then apply Interim Fix APAR LO89575
IBM Connections 4.0 Upgrade to IBM Connections 4.0 CR4 and then apply Interim Fix APAR LO89575

Workarounds and Mitigations

Use Http Server rules (or other out front server/load balancer) to validate host header prior to serving incoming requests.

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Related information

Change History

9 August 2016: Original document version

*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.


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.

Document information

More support for: IBM Connections

Software version: 4.0, 4.5, 5.0, 5.5

Operating system(s): AIX, Linux, Windows

Reference #: 1988338

Modified date: 10 August 2016