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AUSCERT External Security Bulletin Redistribution
ESB-2019.3652.2
Security Bulletin: Multiple vulnerabilities in WebSphere
Application Server Liberty
25 October 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: WebSphere Application Server Liberty
Publisher: IBM
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-4305 CVE-2019-4304
Original Bulletin:
https://www.ibm.com/support/pages/node/960171
https://www.ibm.com/support/pages/node/1097014
Comment: This bulletin contains two (2) IBM security advisories.
Revision History: October 25 2019: Added updated advisory 1097014
September 27 2019: Initial Release
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Security Bulletin: Multiple vulnerabilities in WebSphere Application Server
Liberty (CVE-2019-4304, CVE-2019-4305)
Security Bulletin
Summary
There is an information disclosure and a bypass security vulnerability in
WebSphere Application Server Liberty. These vulnerabilities have been
addressed.
Vulnerability Details
CVEID: CVE-2019-4304
DESCRIPTION: IBM WebSphere Application Server - Liberty could allow a remote
attacker to bypass security restrictions caused by improper session validation.
CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
160950 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2019-4305
DESCRIPTION: IBM WebSphere Application Server Liberty could allow a remote
attacker to obtain sensitive information caused by the improper setting of a
cookie.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
160951 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
These vulnerabilities affect the following versions and releases of IBM
WebSphere Application Server:
* Liberty
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 Liberty using appSecurity-1.0 or
appSecurity-2.0 feature:
? Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH15518
- --OR--
? Apply Fix Pack 19.0.0.10 or later (targeted availability 4Q2019).
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
alerts like this.
References
Complete CVSS v3 Guide
On-line Calculator v3
Off
Related Information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
26 September 2019: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.
==============================================================================
Multiple security vulnerabilities affect Liberty for Java for IBM Cloud
(CVE-2019-4304, CVE-2019-4305)
Security Bulletin
Summary
There is an information disclosure and a bypass security vulnerability in
WebSphere Application Server Liberty. These vulnerabilities have been
addressed.
Vulnerability Details
CVEID: CVE-2019-4304
DESCRIPTION: IBM WebSphere Application Server - Liberty could allow a remote
attacker to bypass security restrictions caused by improper session validation.
CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
160950 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2019-4305
DESCRIPTION: IBM WebSphere Application Server Liberty could allow a remote
attacker to obtain sensitive information caused by the improper setting of a
cookie.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
160951 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
This vulnerability affects all versions of Liberty for Java in IBM Cloudup to
and including v3.36.
Remediation/Fixes
To upgrade to Liberty for Java v3.37-20191002-1726 or higher, you must re-stage
or re-push your application and use the alternate runtime.
See the following instructions on how to used the alternate runtime.
https://cloud.ibm.com/docs/runtimes/libertytopic=liberty-using_monthly_runtime
To find the current version of Liberty for Java in IBM Cloud being used, from
the command-line Cloud Foundry client by running the following commands:
cf ssh <appname> -c cat "staging_info.yml"
Look for the following lines:
{"detected_buildpack":"Liberty for Java(TM) (WAR, liberty-19.0.0_9,
buildpack-v3.37-20191002-1726, ibmjdk-1.8.0_sr5fp41-20190919, env)
","start_command":".liberty/initial_startup.rb"}
To re-stage your application using the command-line Cloud Foundry client, use
the following command:
cf restage <appname>
To re-push your application using the command-line Cloud Foundry client, use
the following command:
cf push <appname>
Workarounds and Mitigations
None.
Get Notified about Future Security Bulletins
References
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