Security Bulletin
Summary
There is a denial of service in the Apache CXF library used by WebSphere Application Server. This has been addressed.
Vulnerability Details
DESCRIPTION: Apache CXF before 3.3.4 and 3.2.11 does not restrict the number of message attachments present in a given message. This leaves open the possibility of a denial of service type attack, where a malicious user crafts a message containing a very large number of message attachments. From the 3.3.4 and 3.2.11 releases, a default limit of 50 message attachments is enforced. This is configurable via the message property "attachment-max-count".
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/170974 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| WebSphere Application Server Liberty | 17.0.0.3 - 20.0.0.1 |
| WebSphere Application Server | 9.0 |
Remediation/Fixes
For Liberty 17.0.0.3-20.0.0.1 using jaxrs-2.0 or jaxrs-2.1 or jaxws-2.2 features:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH19989
--OR--
· Apply Liberty Fix Pack 20.0.0.2 or later (targeted availability 1Q2020).
For WebSphere Application Server and WebSphere Application Server Hypervisor Edition:
For V9.0.0.0 through 9.0.5.2:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH19989
--OR--
· Apply Fix Pack 9.0.5.3 or later (targeted availability 1Q2020).
Additional interim fixes may be available and linked off the interim fix download page.
Workarounds and Mitigations
Get Notified about Future Security Bulletins
References
Change History
03 Feb 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
08 April 2021
UID
ibm11288774