CVE-2021-38370
Publication date 10 August 2021
Last updated 25 August 2025
Ubuntu priority
Cvss 3 Severity Score
Description
In Alpine before 2.25, untagged responses from an IMAP server are accepted before STARTTLS.
Status
| Package | Ubuntu Release | Status | 
|---|---|---|
| alpine | 25.04 plucky | 
                              
                               
                                Not affected 
                                
                               
                             |      
                          
                            
                          
                        
                      
| 24.04 LTS noble | 
                              
                               
                                Not affected 
                                
                               
                             |      
                          
                            
                          
                        
                      |
| 22.04 LTS jammy | 
                              
                               
                                Not affected 
                                
                               
                             |      
                          
                            
                          
                        
                      |
| 20.04 LTS focal | 
                              
                               
                                Fixed 2.22+dfsg1-1ubuntu0.1~esm1 
                                
                                   
                             |      
                          
                            
                          
                        
                      |
| 18.04 LTS bionic | 
                              
                               
                                Fixed 2.21+dfsg1-1ubuntu0.1~esm1 
                                
                                   
                             |      
                          
                            
                          
                        
                      |
| 16.04 LTS xenial | 
                              
                               
                                Fixed 2.20+dfsg1-2ubuntu0.1~esm1 
                                
                                   
                             |      
                          
                            
                          
                        
                      |
| 14.04 LTS trusty | Not in release | 
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| Package | Patch details | 
|---|---|
| alpine | 
Severity score breakdown
| Parameter | Value | 
|---|---|
| Base score | 
                      
                      
                         | 
                  
| Attack vector | Network | 
| Attack complexity | High | 
| Privileges required | None | 
| User interaction | None | 
| Scope | Unchanged | 
| Confidentiality | None | 
| Integrity impact | High | 
| Availability impact | None | 
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N | 
References
Related Ubuntu Security Notices (USN)
- USN-7360-1
 - Alpine vulnerabilities
 - 20 March 2025