Security Bulletin: Novalink Vulnerability to allow a remote user to enumerate usernames due to a difference of responses from valid and invalid login attempts. (CVE-2021-29842)

Security Bulletin

Summary

Novalink uses WebSphere Application Server Liberty. Which could allow a remote user to enumerate usernames due to a difference of responses from valid and invalid login attempts.

Vulnerability Details

CVEID: CVE-2021-29842
DESCRIPTION: IBM WebSphere Application Server 7.0, 8.0, 8.5, 9.0 and Liberty 17.0.0.3 through 21.0.0.9 could allow a remote user to enumerate usernames due to a difference of responses from valid and invalid login attempts. IBM X-Force ID: 205202.
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)
NovaLink	1.0.0.16
NovaLink	2.0.0.0
NovaLink	2.0.1
NovaLink	2.0.2

Remediation/Fixes

For Novalink 1.0.0.16 update to 1.0.0.16-211129 or later.

For Novalink 2.0.0.0, 2.0.1, 2.0.2 or 2.0.2.1 to 2.0.1-211202 or 2.0.2.1-211125 respectively.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

13 Dec 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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Tips

Security Bulletin: Novalink Vulnerability to allow a remote user to enumerate usernames due to a difference of responses from valid and invalid login attempts. (CVE-2021-29842)