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Security Bulletin: IBM WebSphere Application Server is vulnerable to a remote code execution vulnerability (CVE-2023-23477)

Security Bulletin

Summary

IBM WebSphere Application Server traditional is vulnerable to a remote code execution vulnerability. This has been addressed.

Vulnerability Details

CVEID: CVE-2023-23477
DESCRIPTION: IBM WebSphere Application Server traditional could allow a remote attacker to execute arbitrary code on the system with a specially crafted sequence of serialized objects.
CVSS Base score: 8.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/245513 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM WebSphere Application Server	9.0
IBM WebSphere Application Server	8.5

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by upgrading to the fixpack specified below.

Please note that this vulnerability applies only to version 9.0.0.0 through 9.0.5.7 and version 8.5.0.0 through 8.5.5.19. It does not apply to fix pack version 9.0.5.8 and later, and it does not apply to fix pack version 8.5.5.20 and later.

For IBM WebSphere Application Server traditional:

For V9.0.0.0 through 9.0.5.7:
· Apply Fix Pack 9.0.5.8 or later.

For V8.5.0.0 through 8.5.5.19:
· Apply Fix Pack 8.5.5.20 or later.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

The vulnerability was reported to IBM by Liboheng of Tophant Starlight laboratory.

Change History

31 Jan 2023: Initial Publication

*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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

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Document Information

More support for:
WebSphere Application Server

Software version:
9.0,8.5

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

Document number:
6891111

Modified date:
08 February 2023

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