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Security Bulletin: Denial of service vulnerability in WebSphere Application Server Liberty (CVE-2020-4590)

Security Bulletin


Summary

WebSphere Application Server Liberty is vulnerable to a denial of service. This has been addressed.

Vulnerability Details

CVEID:   CVE-2020-4590
DESCRIPTION:   IBM WebSphere Application Server Liberty running oauth-2.0 or openidConnectServer-1.0 server features is vulnerable to a denial of service attack conducted by an authenticated client.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/184650 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
WebSphere Application Server Liberty17.0.0.3 - 20.0.0.9

Remediation/Fixes

The recommended solution is to apply the interim fix or Fix Pack containing APAR PH29368 for each named product as soon as practical.

For WebSphere Application Server Liberty 17.0.0.3 - 20.0.0.9 using the oauth-2.0 or openidConnectServer-1.0 features: 
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH29368
--OR--
· Apply Liberty Fix Pack 20.0.0.10 or later (targeted availability 4Q2020).

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

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

16 Sept 2020: 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.

Document Location

Worldwide

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Document Information

Modified date:
16 September 2020

UID

ibm16333623