CVE Vulnerabilities

CVE-2021-29842

Improper Restriction of Excessive Authentication Attempts

Published: Sep 16, 2021 | Modified: Nov 21, 2024
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu
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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.

Weakness

The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.

Affected Software

NameVendorStart VersionEnd Version
Websphere_application_serverIbm7.0.0.0 (including)7.0.0.45 (including)
Websphere_application_serverIbm8.0.0.0 (including)8.0.0.15 (including)
Websphere_application_serverIbm8.5 (including)8.5.5.20 (including)
Websphere_application_serverIbm9.0.0.0 (including)9.0.5.9 (including)
Websphere_application_serverIbm17.0.0.3 (including)21.0.0.9 (including)

Potential Mitigations

  • Common protection mechanisms include:

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].

  • Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]

References