| ID | 
        
          CVE-2021-42717
         | 
      
      
          | Sažetak | 
        ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4. | 
      
      
          | Reference | 
        
          
         | 
      
      
        | CVSS | 
        
          
              | Base:           | 5.0 |  
              | Impact:         | 2.9 |  
              | Exploitability: | 10.0 |  
           
         | 
      
    
        | Pristup | 
        
        
            | Vektor | Složenost | Autentikacija |  
            
            | NETWORK | 
            LOW | 
            NONE | 
             
         
         | 
    
      
        | Impact | 
        
        
            | Povjerljivost | Cjelovitost | Dostupnost |  
            
            | NONE | 
            NONE | 
            PARTIAL | 
             
         
         | 
    
    
        | CVSS vektor | 
        AV:N/AC:L/Au:N/C:N/I:N/A:P | 
      
      
          | Zadnje važnije ažuriranje | 
          
            03-07-2025 - 20:59 | 
          
      
      
          | Objavljeno | 
          
            07-12-2021 - 22:15 |