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Security Bulletin: Code execution vulnerability in WebSphere Application Server (CVE-2018-1567)

Security Bulletin


Summary

There is a potential remote code execution vulnerability in WebSphere Application Server.

Vulnerability Details


CVEID: CVE-2018-1567
DESCRIPTION: IBM WebSphere Application Server could allow remote attackers to execute arbitrary Java code through the SOAP connector with a serialized object from untrusted sources.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/143024 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

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

  • Version 9.0
  • Version 8.5
  • Version 8.0
  • Version 7.0

Remediation/Fixes


The recommended solution is to apply the interim fix, Fix Pack or PTF containing APARs PI95973 for each named product as soon as practical.

For WebSphere Application Server traditional and WebSphere Application Server Hypervisor Edition:

For V9.0.0.0 through 9.0.0.9:
· Upgrade to minimal fix pack levels as required by interim fixes and then apply Interim Fix PI95973
--OR--
· Apply Fix Pack 9.0.0.10 or later (targeted availability 4Q 2018).

For V8.5.0.0 through 8.5.5.14:
· Upgrade to minimal fix pack levels as required by interim fixes and then apply Interim Fix PI95973
--OR--
· Apply Fix Pack 8.5.5.15 or later (targeted availability 1Q2019).

For V8.0.0.0 through 8.0.0.15:
· Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PI95973

For V7.0.0.0 through 7.0.0.45:
· Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PI95973

WebSphere Application Server V7 and V8 are no longer in full support; IBM recommends upgrading to a fixed, supported version/release/platform of the product.

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Important Note

IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

05 September 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

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: WebSphere Application Server

Software version: 7.0, 8.0, 8.5, 9.0

Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS

Software edition: Advanced, Base, Developer, Enterprise, Express, Network Deployment, Single Server

Reference #: 2016254

Modified date: 05 September 2018


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