CVE-2021-20556: IBM Cognos Controller information disclosure

Published May 3, 2024
·
Updated

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.

Affected Software

3 affected components
IBM Cognos Controller=10.4.1
IBM Cognos Controller=10.4.2
IBM Cognos Controller=11.0.0

Event History

May 3, 2024
CVE Published
via MITRE·05:31 PM
Data Sourced
via MITRE·05:31 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·06:15 PM
DescriptionSeverityWeakness

Frequently Asked Questions

1

What is the severity of CVE-2021-20556?

CVE-2021-20556 has a medium severity rating due to the potential for user enumeration.

2

How do I fix CVE-2021-20556?

To fix CVE-2021-20556, update IBM Cognos Controller to the latest version that addresses this vulnerability.

3

What versions of IBM Cognos Controller are affected by CVE-2021-20556?

CVE-2021-20556 affects IBM Cognos Controller versions 10.4.1, 10.4.2, and 11.0.0.

4

What could an attacker achieve by exploiting CVE-2021-20556?

An attacker may exploit CVE-2021-20556 to enumerate valid usernames, leading to potential further attacks.

5

Is CVE-2021-20556 a local or remote vulnerability?

CVE-2021-20556 is classified as a remote vulnerability.

Contact

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