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Security Bulletins: There is a security vulnerability in the XLXP-C component which is shipped in IBM Integration Bus and App Connect Enterprise (CVE-2018-1801)

Security Bulletin


There is a security vulnerability in the XLXP-C component which is shipped in IBM Integration Bus and App Connect Enterprise. A successful exploitation of the vulnerability could lead to a denial of service attack.

Vulnerability Details

CVEID: CVE-2018-1801
DESCRIPTION: IBM Integration Bus is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to consume memory resources.
CVSS Base Score: 5.3
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

IBM App Connect V11.0.0.0 - V11.0.0.1

IBM Integration Bus V10.0.0.0 -V10.0.0.13       

IBM Integration Bus V9.0.0.0 - V9.0.0.10

WebSphere Message Broker V8.0.0.0 -V8.0.0.9


Remediation / Fix
IBM App Connect V11.0.0.0-V11.0.0.1 IT19007
The APAR is available in fix pack
IBM Integration Bus V10.0.0.0 - V10.0.0.13 IT19007
The APAR is available in fix pack except for AIX - see IT26013
IBM Integration Bus V10.0.0.0 - V10.0.0.14 IT26013
For AIX apply this Interim fix for APAR IT26013 on the top of fix pack
Interim fix available here --> IBM Fix Central
IBM Integration Bus V9.0.0.0 - V9.0.0.10 IT19007
The APAR is available in fix pack

WebSphere Message Broker

V8.0.0.0 - V8.0.0.9 IT19007 Contact IBM support to request for Fix APAR

Websphere Message Broker V8 is no longer in full support; IBM recommends upgrading to a fixed, supported version/release/platform of the product.
If you are a customer with extended support and require a fix, contact IBM support. 

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

18 January 2019

*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 Integration Bus

Software version: All Versions

Operating system(s): AIX, HP-UX, Linux, Solaris, Windows

Reference #: 0795780

Modified date: 28 January 2019