Information Disclosure Vulnerability in OpenStack Keystone by OpenStack

CVE-2021-38155

Summary

OpenStack Keystone versions from 10.x to 19.x (prior to specified release versions) are susceptible to a serious vulnerability that allows unauthorized access to sensitive account information. This occurs during the account locking process, where an attacker can determine if an account exists and retrieve its UUID by repeatedly guessing account names and observing the responses. This information can be exploited to execute further attacks, especially in deployments where security features such as security_compliance.lockout_failure_attempts are activated.

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