CVE-2021-38155

Advisory

Keystone versions 16.0.2, 17.0.1, 18.0.1 and 19.0.1 include a fix for CVE-2021-38155: 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.
https://security.openstack.org/ossa/OSSA-2021-003.html

Affected package

Affected versions

Fixed versions

Vulnerability changelog

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. See CVE-2021-38155.


CONFIRM:https://security.openstack.org/ossa/OSSA-2021-003.html: https://security.openstack.org/ossa/OSSA-2021-003.html
MISC:https://launchpad.net/bugs/1688137: https://launchpad.net/bugs/1688137
MLIST:[oss-security] 20210810 [OSSA-2021-003] Keystone: Account name and UUID oracles in account locking (CVE-2021-38155): http://www.openwall.com/lists/oss-security/2021/08/10/5

Resources

• https://security.openstack.org/ossa/OSSA-2021-003.html
• https://launchpad.net/bugs/1688137
• http://www.openwall.com/lists/oss-security/2021/08/10/5
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38155