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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 Server9.0
WebSphere Application Server8.5
WebSphere Application Server8.0
WebSphere Application Server7.0
WebSphere Application Server Liberty17.0.0.3 - 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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References

Off

Acknowledgement

The vulnerability was reported to IBM by Kajetan Rostojek.

Change History

15 Sep 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 Location

Worldwide

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Document Information

Modified date:
15 September 2021

UID

ibm16489485