Vulnerability Details 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.
                
                    Exploit prediction scoring system (EPSS) score
                    
                        
                            EPSS Score 0.011
                        
                    
                    
                        
                            EPSS Ranking 77.1%
                        
                    
                 
                
                    CVSS Severity
                    
                        
                            CVSS v3 Score 7.5
                        
                    
                    
                        
                            CVSS v2 Score 5.0
                        
                    
                 
                
                
                
                    
                
                
                    
                        Products affected by CVE-2021-38155
                        
                            
                                
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                                            cpe:2.3:a:openstack:keystone:10.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:10.0.1
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:10.0.2
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:10.0.3
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:11.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:11.0.1
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:11.0.2
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:11.0.3
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:11.0.4
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:12.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:12.0.1
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:12.0.2
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:12.0.3
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:13.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:13.0.1
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:13.0.2
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:14.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:14.0.1
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:14.1.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:15.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:15.0.1
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:16.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:16.0.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:16.0.1
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:17.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:17.0.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:18.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:18.0.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:19.0.0
                                        
                                     
                                 
                            
                                
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                                            cpe:2.3:a:openstack:keystone:19.0.0.0