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Security Bulletin: Weaker than expected security in WebSphere Application Server (CVE-2018-1719)

Security Bulletin


Summary

There is a potential for weaker than expected security in WebSphere Application Server which could result in TLS downgrade under certain conditions. This only applies if FIPS is enabled and the keystores/truststores are configured by the JVM property com.ibm.ssl.protocol.

Vulnerability Details

CVEID: CVE-2018-1719
DESCRIPTION: IBM WebSphere Application Server could provide weaker than expected security under certain conditions. This could result in a downgrade of TLS protocol. A remote attacker could exploit this vulnerability to perform man-in-the-middle attacks.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/147292 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/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

Remediation/Fixes

The recommended solution is to apply the interim fix, Fix Pack or PTF containing APAR PI98768 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 9.0.0.8:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI98768
--OR--
· Apply Fix Pack 9.0.0.9 or later.

For V8.5.0.0 through 8.5.5.14:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI98768

--OR--
· Apply Fix Pack 8.5.5.15 or later.

Get Notified about Future Security Bulletins

References

Off

Change History

12 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.

[{"Business Unit":{"code":"BU004","label":"Hybrid Cloud"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Component":"","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"},{"code":"PF035","label":"z/OS"}],"Version":"9.0 8.5","Edition":"Advanced;Base;Developer;Enterprise;Express;Network Deployment"}]

Document Information

Modified date:
06 March 2019

UID

ibm10718837