CVE-2019-5427
Publication date 22 April 2019
Last updated 25 August 2025
Ubuntu priority
Cvss 3 Severity Score
Description
c3p0 version < 0.9.5.4 may be exploited by a billion laughs attack when loading XML configuration due to missing protections against recursive entity expansion when loading configuration.
Status
| Package | Ubuntu Release | Status | 
|---|---|---|
| c3p0 | 25.04 plucky | 
                              
                               
                                Fixed 0.9.1.2-10ubuntu1 
                                
                               
                             |      
                          
                            
                          
                        
                      
| 24.04 LTS noble | 
                              
                               
                                Fixed 0.9.1.2-10ubuntu1 
                                
                               
                             |      
                          
                            
                          
                        
                      |
| 22.04 LTS jammy | 
                              
                               
                                Fixed 0.9.1.2-10ubuntu1 
                                
                               
                             |      
                          
                            
                          
                        
                      |
| 20.04 LTS focal | 
                              
                               
                                Fixed 0.9.1.2-10ubuntu0.20.04.1 
                                
                               
                             |      
                          
                            
                          
                        
                      |
| 18.04 LTS bionic | 
                              
                               
                                Fixed 0.9.1.2-9+deb8u1ubuntu0.18.04.1 
                                
                               
                             |      
                          
                            
                          
                        
                      |
| 16.04 LTS xenial | 
                              
                               
                                Fixed 0.9.1.2-9+deb8u1ubuntu0.16.04.1~esm1 
                                
                                   
                             |      
                          
                            
                          
                        
                      |
| 14.04 LTS trusty | 
                              
                               
                                Fixed 0.9.1.2-9+deb8u1ubuntu0.14.04.1~esm1 
                                
                                   
                             |      
                          
                            
                          
                        
                      
Get expanded security coverage with Ubuntu Pro
Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.
Get Ubuntu Pro 30-day free trialSeverity score breakdown
| Parameter | Value | 
|---|---|
| Base score | 
                      
                      
                         | 
                  
| Attack vector | Network | 
| Attack complexity | Low | 
| Privileges required | None | 
| User interaction | None | 
| Scope | Unchanged | 
| Confidentiality | None | 
| Integrity impact | None | 
| Availability impact | High | 
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | 
References
Related Ubuntu Security Notices (USN)
- USN-5293-1
 - c3p0 vulnerability
 - 21 February 2022
 - USN-5293-2
 - c3p0 vulnerability
 - 22 February 2022
 - USN-7571-1
 - c3p0 vulnerability
 - 16 June 2025