Security Bulletin: WebSphere Application Server is vulnerable to a remote code execution vulnerability (CVE-2020-4450)

Summary

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

Vulnerability Details

CVEID:CVE-2020-4450
**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: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/181231 for the current score.
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

Remediation/Fixes

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

For V9.0.0.0 through 9.0.5.4:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH25074
--OR–
· Apply Fix Pack 9.0.5.5 or later (targeted availability 3Q2020).

For V8.5.0.0 through 8.5.5.17:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH25074
--OR–
· Apply Fix Pack 8.5.5.18 or later (targeted availability 3Q2020).

Additional interim fixes may be available and linked off the interim fix download page.

Workarounds and Mitigations

None