Security Bulletin: Weaker than expected security in WebSphere Application Server with SP800-131 transition mode (CVE-2018-1996)

Summary

There is a potential for weaker than expected security in WebSphere Application Server with SP800-131 transition mode and SSL_TLSv2.

Vulnerability Details

CVEID: CVE-2018-1996 DESCRIPTION: IBM WebSphere Application Server could provide weaker than expected security, caused by the improper TLS configuration. A remote attacker could exploit this vulnerability to obtain sensitive information using man in the middle techniques.
CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/154650&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)

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 the APAR 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 9.0.0.10:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH05769
--OR–
· Apply Fix Pack 9.0.0.11 or later (targeted availability 2Q 2018).

For V8.5.0.0 through 8.5.5.15:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH05769
--OR–
· Apply Fix Pack 8.5.5.16 or later (targeted availability 3Q 2019).

For V8.0.0.0 through 8.0.0.15:
· Apply Interim Fix PH05769

For V7.0.0.0 through 7.0.0.45:
· Apply Interim Fix PH05769

_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. _