Information Disclosure Vulnerability in OpenStack Keystone by OpenStack
CVE-2021-38155

7.5HIGH

Key Information:

Vendor

Openstack
Status
Keystone
Vendor
CVE Published:
6 August 2021

What is CVE-2021-38155?

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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References

https://launchpad.net/bugs/1688137
https://security.openstack.org/ossa/OSSA-2021-003.html
http://www.openwall.com/lists/oss-security/2021/08/10/5
mailing-list

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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