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  5. CVE-2020-27826

CVE-2020-27826: Execution with Unnecessary Privileges

May 28, 2021 (updated June 4, 2021)

A flaw was found in Keycloak where it is possible to update the user’s metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.

References

  • bugzilla.redhat.com/show_bug.cgi?id=1905089
  • nvd.nist.gov/vuln/detail/CVE-2020-27826

Code Behaviors & Features

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Affected versions

All versions before 12.0.0

Fixed versions

  • 12.0.0

Solution

Upgrade to version 12.0.0 or above.

Impact 4.2 MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-250: Execution with Unnecessary Privileges

Source file

maven/org.keycloak/keycloak-core/CVE-2020-27826.yml

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