LSV-793: DoS vulnerability prevents LDAP users from authenticating

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 7.0 DE (7.0.10), 7.1 DXP (7.1.10), 7.2 DXP (7.2.10)
• Fix Version/s: 7.0.X EE, 7.1.x EE, 7.2.X EE
• Component/s: None
• Labels: None
• CVE IDs: CVE-2021-38266
• CVSS Base Score: 5.3
• CVSS Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
• 7.0 Fix Pack Version: 90
• 7.1 Fix Pack Version: 17
• 7.2 Fix Pack Version: 5

The Portal Security module in Liferay DXP 7.0 before fix pack 90, 7.1 before fix pack 17 and 7.2 before fix pack 5 does not correctly import users from LDAP, which allows remote attackers to prevent a legitimate user from authenticating by attempting to sign in as a user that exist in LDAP.