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AUSCERT External Security Bulletin Redistribution
ESB-2021.0562
Multiple Vulnerabilities in IBM Java SDK affect WebSphere
Application Server January 2021 CPU
16 February 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM WebSphere Application Server
Publisher: IBM
Operating System: Windows
Linux variants
AIX
HP-UX
Solaris
IBM i
z/OS
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-27221 CVE-2020-14782 CVE-2020-14781
CVE-2020-2773
Reference: ASB-2020.0175
ASB-2020.0076
ESB-2021.0072
ESB-2021.0061
ESB-2021.0012
ESB-2020.4526
Original Bulletin:
https://www.ibm.com/support/pages/node/6415639
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Security Bulletin: Multiple Vulnerabilities in IBM Java SDK affect WebSphere
Application Server January 2021 CPU
Security Bulletin
Summary
There are multiple vulnerabilities in the IBM SDK, Java Technology Edition
that is shipped with IBM WebSphere Application Server. These might affect some
configurations of IBM WebSphere Application Server Traditional, IBM WebSphere
Application Server Liberty and IBM WebSphere Application Server Hypervisor
Edition. These products have addressed the applicable CVEs. If you run your own
Java code using the IBM Java Runtime delivered with this product, you should
evaluate your code to determine whether the complete list of vulnerabilities is
applicable to your code. For a complete list of vulnerabilities, refer to the
link for "IBM Java SDK Security Bulletin" located in the References section for
more information. HP fixes are on a delayed schedule.
Vulnerability Details
CVEID: CVE-2020-2773
DESCRIPTION: An unspecified vulnerability in Java SE related to the Java SE
Security component could allow an unauthenticated attacker to cause a denial of
service resulting in a low availability impact using unknown attack vectors.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
179673 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2020-14782
DESCRIPTION: An unspecified vulnerability in Java SE related to the Libraries
component could allow an unauthenticated attacker to cause no confidentiality
impact, low integrity impact, and no availability impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
190100 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2020-27221
DESCRIPTION: Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow
when the virtual machine or JNI natives are converting from UTF-8 characters to
platform encoding. By sending an overly long string, a remote attacker could
overflow a buffer and execute arbitrary code on the system or cause the
application to crash.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
195353 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2020-14781
DESCRIPTION: An unspecified vulnerability in Java SE related to the JNDI
component could allow an unauthenticated attacker to obtain sensitive
information resulting in a low confidentiality impact using unknown attack
vectors.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
190099 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
+--------------------------------------------------------+
|Affected Product(s) |Version(s) |
|------------------------------------+-------------------|
|WebSphere Application Server Liberty|Continuous Delivery|
|------------------------------------+-------------------|
|WebSphere Application Server |9.0 |
|------------------------------------+-------------------|
|WebSphere Application Server |8.5 |
+--------------------------------------------------------+
Remediation/Fixes
For WebSphere Application Server Liberty:
Upgrade to IBM SDK, Java Technology Edition Version 8 SR6 FP25 refer to IBM
Java SDKs for Liberty
For Version 9 WebSphere Application Server Traditional:
Update to the IBM SDK, Java Technology Edition, Version 8 Service Refresh 6
FP25 using the instructions in the IBM Knowledge Center Installing and updating
IBM SDK, Java Technology Edition on distributed environments then use the IBM
Installation Manager to access the online product repositories to install the
SDK or use IBM Installation Manager and access the packages from Fixcentral.
For V8.5.5.9 through 8.5.5.19 WebSphere Application Server Traditional and
WebSphere Application Server Hypervisor Edition:
For the IBM SDK, Java Technology Version that you use, upgrade to the minimal
fix pack level of WebSphere Application Server as noted in the interim fix
below then apply the interim fixes:
For IBM SDK Java Technology Edition Version 7
* Apply interim fix PH34273: Will upgrade you to IBM SDK, Java Technology
Edition, Version 7 Service Refresh 10 Fix Pack 80.
For IBM SDK Java Technology Edition Version 7R1
* Apply interim fix PH34272: Will upgrade you to IBM SDK, Java Technology
Edition, Version 7R1 Service Refresh 4 Fix Pack 80.
For IBM SDK Java Technology Edition Version 8 SR6 FP25
* Apply interim fix PH34270: Will upgrade you to IBM SDK, Java Technology
Edition, Version 8 Service Refresh 6 FP25.
* For environments that have been upgraded to use the new default IBM SDK
Version 8 bundled with WebSphere Application Server Fix Pack 8.5.5.11 or
later: Apply interim fix PH34271 Will upgrade you to IBM SDK, Java
Technology Edition, Version 8 Service Refresh 6 FP25.
OR
* Apply IBM Java SDK shipped with WebSphere Application Server Fix pack 20
(8.5.5.20) or later (targeted availability 3Q 2021).
For Application Client for WebSphere Application Server:
Follow instructions above for the WebSphere Application Server to download the
interim fix needed for your version of the Application Client.
Workarounds and Mitigations
None
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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
15 Feb 2021: 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 Information
Modified date:
15 February 2021
UID
ibm16415639
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