Security Bulletin: Multiple security vulnerabilities affect IBM WebSphere Application Server in IBM Cloud

Summary

There is a potential man-in-the-middle attack in Apache CXF used by WebSphere Application Server. There is a potential directory traversal vulnerability in the Admin Console for WebSphere Application Server. There is a potential bypass security vulnerability in the expression language library used by WebSphere Application Server. There is a potential cross-site scripting vulnerability in the OAuth ear in WebSphere Application Server. There is a potential cross-site scripting vulnerability in SAML ear in WebSphere Application Server. There is a potential cross-site scripting vulnerability in the WebSphere Application Server Admin Console.

Vulnerability Details

CVEID: CVE-2018-8039 DESCRIPTION: Apache CXF could allow a remote attacker to conduct a man-in-the-middle attack. The TLS hostname verification does not work correctly with com.sun.net.ssl interface. An attacker could exploit this vulnerability to launch a man-in-the-middle attack.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/145516&gt; 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:H/A:N)

CVEID: CVE-2018-1770 DESCRIPTION: IBM WebSphere Application Server could allow a remote attacker to traverse directories on the system. An attacker could send a specially-crafted URL request containing “dot dot” sequences (/…/) to view arbitrary files on the system.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/148686&gt; 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:N)

CVEID: CVE-2014-7810 DESCRIPTION: Apache Tomcat could allow a remote attacker to bypass security restrictions, caused by the use of expression language. An attacker could exploit this vulnerability to bypass the protections of a Security Manager.
CVSS Base Score: 5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/103155&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVEID: CVE-2018-1794 DESCRIPTION: IBM WebSphere Application Server using OAuth ear is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
CVSS Base Score: 6.1
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/148949&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

CVEID: CVE-2018-1793 DESCRIPTION: IBM WebSphere Application Server using SAML ear is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
CVSS Base Score: 6.1
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/148948&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

CVEID: CVE-2018-1777 DESCRIPTION: IBM WebSphere Application Server Admin Console is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
CVSS Base Score: 5.4
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/148800&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM WebSphere Application Server:

• Liberty
• Version 9.0
• Version 8.5

Remediation/Fixes

To patch an existing service instance, refer to the IBM WebSphere Application Server bulletins listed below:

1. Security Bulletin: Potential MITM attack in Apache CXF used by WebSphere Application Server (CVE-2018-8039)

2. Security Bulletin: Potential traversal vulnerability in IBM WebSphere Application Server Admin Console (CVE-2018-1770)

3. Security Bulletin: Potential bypass security vulnerability in Expression Language library used by WebSphere Application Server (CVE-2014-7810)

4. Security Bulletin: Cross-site scripting vulnerability in OAuth ear in WebSphere Application Server (CVE-2018-1794)

5. Security Bulletin: Cross-site scripting vulnerability in SAML ear in WebSphere Application Server (CVE-2018-1793)

6. Security Bulletin: Potential cross-site scripting vulnerability in the WebSphere Application Server Admin Console (CVE-2018-1777)

Alternatively, delete the vulnerable service instance and create a new instance.

Workarounds and Mitigations

None.

Monitor IBM Cloud Status for Future Security Bulletins

Monitor the security notifications on the IBM Cloud Status page to be advised of future security bulletins.

References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

31 October 2018: original document 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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