OpenStack Keystone Folsom, Grizzly before 2013.1.3, and Havana, when using LDAP with Anonymous binding, allows remote attackers to bypass authentication via an empty password.
CVSS Severity (version 2.0):
Impact Subscore: 2.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification
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[oss-security] 20130613 [OSSA 2013-015] Authentication bypass when using LDAP backend (CVE-2013-2157)
Vulnerable software and versions