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AUSCERT External Security Bulletin Redistribution
ESB-2021.1200
Security Bulletin: Vulnerability in Apache MyFaces affects
WebSphere Application Server (CVE-2021-26296)
9 April 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: WebSphere Application Server Liberty
WebSphere Application Server
Publisher: IBM
Operating System: AIX
HP-UX
IBM i
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Cross-site Request Forgery -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-26296
Original Bulletin:
https://www.ibm.com/support/pages/node/6441433
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Security Bulletin: Vulnerability in Apache MyFaces affects WebSphere
Application Server (CVE-2021-26296)
Security Bulletin
Summary
There is a vulnerability in the Apache MyFaces library used by WebSphere
Application Server. This has been addressed.
Vulnerability Details
CVEID: CVE-2021-26296
DESCRIPTION: Apache MyFaces is vulnerable to cross-site request forgery,
caused by improper validation of user-supplied input. By persuading an
authenticated user to visit a malicious Web site, a remote attacker could send
a malformed HTTP request to perform unauthorized actions. An attacker could
exploit this vulnerability to perform cross-site scripting attacks, Web cache
poisoning, and other malicious activities.
CVSS Base score: 8.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
197017 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Affected Products and Versions
+------------------------------------+-------------------+
|Affected Product(s) |Version(s) |
+------------------------------------+-------------------+
|WebSphere Application Server Liberty|17.0.0.3 - 21.0.0.3|
+------------------------------------+-------------------+
|WebSphere Application Server |9.0 |
+------------------------------------+-------------------+
|WebSphere Application Server |8.5 |
+------------------------------------+-------------------+
|WebSphere Application Server |8.0 |
+------------------------------------+-------------------+
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 17.0.0.3 - 21.0.0.3 using the jsf-2.0,
jsf-2.1 or jsf-2.3 feature:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH34711
- --OR--
. Apply Fix Pack 21.0.0.4 or later (targeted availability 2Q2021).
For WebSphere Application Server traditional and WebSphere Application Server
Hypervisor Edition:
For V9.0.0.0 through 9.0.5.7:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH34711
- --OR--
. Apply Fix Pack 9.0.5.8 or later (targeted availability 2Q2021).
For V8.5.0.0 through 8.5.5.19:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH34711
- --OR--
. Apply Fix Pack 8.5.5.20 or later (targeted availability 3Q2021).
For V8.0.0.0 through 8.0.0.15:
. Upgrade to 8.0.0.15 and then apply Interim Fix PH34711
Additional interim fixes may be available and linked off the interim fix
download page.
WebSphere Application Server V8.0 is no longer in full support; IBM recommends
upgrading to a fixed, supported version/release/platform of the product.
Workarounds and Mitigations
None
Change History
08 Apr 2021: Initial Publication
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
Document Information
More support for:
WebSphere Application Server
Software version:
Liberty
Operating system(s):
AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS, Mac OS
Document number:
6441433
Modified date:
08 April 2021
UID
ibm16441433
- --------------------------END INCLUDED TEXT--------------------
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