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Security Bulletin: Vulnerability in Apache CXF affects WebSphere Application Server (CVE-2019-12406)

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

CVEID:   CVE-2019-12406
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

The recommended solution is to apply the interim fix, Fix Pack or PTF containing APAR PH19989 for each named product as soon as practical.
 

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

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

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

More support for:
WebSphere Application Server

Software version:
9.0, Liberty

Operating system(s):
AIX, HP-UX, IBM i, Linux, Mac OS, Solaris, Windows, z/OS

Document number:
1288774

Modified date:
08 April 2021

UID

ibm11288774

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