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AUSCERT External Security Bulletin Redistribution
ESB-2018.3694
An XML External Entity (XXE) processing vulnerability is exposed in Case
Manager administration client (CVE-2018-1844)
28 November 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Case Manager
Publisher: IBM
Operating System: AIX
Linux variants
Windows
Impact/Access: Access Confidential Data -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-1844
Reference: ESB-2018.3512.2
ESB-2018.3425
ESB-2018.3416
ESB-2018.3073
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=ibm10734193
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Security Bulletin: An XML External Entity (XXE) processing vulnerability is
exposed in Case Manager administration client (CVE-2018-1844)
Document information
More support for: Case Manager
Software version: All Versions
Operating system(s): AIX, Linux, Windows
Reference #: 0734193
Modified date: 27 November 2018
Security Bulletin
Summary
IBM Case Manager has addressed the following vulnerability. An XML External
Entity (XXE) processing vulnerability is exposed in Case Manager administration
client with the ability to import solution packaged which are FileNet
Deployment Manager exported zip packages. (CVE-2018-1844)
Vulnerability Details
CVEID: CVE-2018-1844
DESCRIPTION: IBM Case Manager is vulnerable to a XML External Entity Injection
(XXE) attack when processing XML data. A remote attacker could exploit this
vulnerability to expose sensitive information or consume memory resources.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
150904 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L)
Affected Products and Versions
Affected IBM Case Manager Affected Versions
IBM Case Manager 5.3.X
IBM Case Manager 5.2.1
IBM Case Manager 5.2.0
IBM Case Manager 5.1.1
Remediation/Fixes
+------------------+-------------------+------------------+-------------------+
| Product | VRMF | APAR | Remediation/First |
| | | | Fix |
+------------------+-------------------+------------------+-------------------+
|IBM Case Manager |5.3.0.0 - 5.3.3.0 |PJ45232 |5.3.3.0-ICM-IF003 |
| | | |or later versions |
+------------------+-------------------+------------------+-------------------+
|IBM Case Manager |5.2.1.0 - 5.2.1.7 |PJ45226 |5.2.1.7-ICM-IF004 |
| | | |or later |
+------------------+-------------------+------------------+-------------------+
IBM Case Manager V5.2.0 is not fixed as the fix requires JDK 1.8 and this will
not be compatible with the application server versions that is supported with
this version of Case Manager. IBM recommends upgrading to a fixed, supported
version/release/platform of the product.
IBM Case Manager V5.1.1 is no longer in full support; IBM recommends upgrading
to a fixed, supported version/release/platform of the product.
Workarounds and Mitigations
The issue can be mitigated by preventing XXE injection into the solution zip
package in doing the following:
1. Ensuring that the solution package export and import process is well
controlled, where the package is not exposed to modification.
2. Generating a checksum for the solution export zip package immediately after
export, and validating the checksum prior to import to ensure package
consistency.
Change History
06 Nov 2018: 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.
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