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AUSCERT External Security Bulletin Redistribution
ESB-2021.3124
Security Bulletin: WebSphere Application Server is
vulnerable to Information Disclosure (CVE-2021-29842)
16 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM WebSphere Application Server
Publisher: IBM
Operating System: AIX
HP-UX
IBM i
Linux variants
Solaris
Windows
Mac OS
z/OS
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-29842
Original Bulletin:
https://www.ibm.com/support/pages/node/6489485
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: WebSphere Application Server is vulnerable to Information Disclosure (CVE-2021-29842)
Security Bulletin
Summary
WebSphere Application Server configured with a federated repository is
vulnerable to information disclosure. This has been addressed.
Vulnerability Details
CVEID: CVE-2021-29842
DESCRIPTION: IBM WebSphere Application Server could allow a remote user to
enumerate usernames due to a difference of responses from valid and invalid
login attempts.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
205202 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 |9.0 |
+------------------------------------+-------------------+
|WebSphere Application Server |8.5 |
+------------------------------------+-------------------+
|WebSphere Application Server |8.0 |
+------------------------------------+-------------------+
|WebSphere Application Server |7.0 |
+------------------------------------+-------------------+
|WebSphere Application Server Liberty|17.0.0.3 - 21.0.0.9|
+------------------------------------+-------------------+
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 - 21.0.0.9 using the
federatedRegistry-1.0 feature:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH38929
- --OR--
. Apply Fix Pack 21.0.0.10 or later (targeted availability 4Q2021).
For WebSphere Application Server traditional and WebSphere Application Server
Hypervisor Edition:
For V9.0.0.0 through 9.0.5.9:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH38929
- --OR--
. Apply Fix Pack 9.0.5.10 or later (targeted availability 4Q2021).
For V8.5.0.0 through 8.5.5.20:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH38929
- --OR--
. Apply Fix Pack 8.5.5.21 or later (targeted availability 1Q2022).
For V8.0.0.0 through 8.0.0.15:
. Upgrade to 8.0.0.15 and then apply Interim Fix PH38929
For V7.0.0.0 through 7.0.0.45:
. Upgrade to 7.0.0.45 and then apply Interim Fix PH38929
Additional interim fixes may be available and linked off the interim fix
download page.
WebSphere Application Server V7.0 and V8.0 are no longer in full support; IBM
recommends upgrading to a fixed, supported version/release/platform of the
product.
Workarounds and Mitigations
None
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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
Acknowledgement
The vulnerability was reported to IBM by Kajetan Rostojek.
Change History
15 Sep 2021: Initial Publication
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