CVE-2021-38155 Information

Description

OpenStack Keystone 10.x through 16.x before 16.0.2 17.x before 17.0.1 18.x before 18.0.1 and 19.x before 19.0.1 allows information disclosure during account locking (related to PCI DSS features). By guessing the name of an account and failing to authenticate multiple times any unauthenticated actor could both confirm the account exists and obtain that account’s corresponding UUID which might be leveraged for other unrelated attacks. All deployments enabling security_compliance.lockout_failure_attempts are affected.

CVSS Vector

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

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5