[asterisk-security] AST-2017-011: Memory leak in pjsip session resource

[Asterisk Security Team]

               Asterisk Project Security Advisory - AST-2017-011

         Product        Asterisk                                              
         Summary        Memory leak in pjsip session resource                 
    Nature of Advisory  Memory leak                                           
      Susceptibility    Remote Sessions                                       
         Severity       Minor                                                 
      Exploits Known    No                                                    
       Reported On      October 15, 2017                                      
       Reported By      Correy Farrell                                        
        Posted On       
     Last Updated On    October 19, 2017                                      
     Advisory Contact   kharwell AT digium DOT com                            
         CVE Name       

    Description  A memory leak occurs when an Asterisk pjsip session object   
                 is created and that call gets rejected before the session    
                 itself is fully established. When this happens the session   
                 object never gets destroyed.                                 

    Resolution  Asterisk now releases the session object and all associated   
                memory when a call gets rejected.                             

                               Affected Versions       
                         Product                       Release  
                                                       Series   
                  Asterisk Open Source                  13.x    13.5.0+       
                  Asterisk Open Source                  14.x    All Releases  
                  Asterisk Open Source                  15.x    All Releases  
                   Certified Asterisk                   13.13   All Releases  

                                  Corrected In
          Product                              Release                        
    Asterisk Open Source               13.18.1, 14.7.1, 15.1.1                
     Certified Asterisk                      13.13-cert7                      

                                     Patches                          
                                SVN URL                               Revision  
   http://downloads.asterisk.org/pub/security/AST-2017-011-13.diff    Asterisk  
                                                                      13        
   http://downloads.asterisk.org/pub/security/AST-2017-011-14.diff    Asterisk  
                                                                      14        
   http://downloads.asterisk.org/pub/security/AST-2017-011-15.diff    Asterisk  
                                                                      15        
   http://downloads.asterisk.org/pub/security/AST-2017-011-13.13.diff Certified 
                                                                      Asterisk  
                                                                      13.13     

    Links  https://issues.asterisk.org/jira/browse/ASTERISK-27345             

    Asterisk Project Security Advisories are posted at                        
    http://www.asterisk.org/security                                          
                                                                              
    This document may be superseded by later versions; if so, the latest      
    version will be posted at                                                 
    http://downloads.digium.com/pub/security/AST-2017-011.pdf and             
    http://downloads.digium.com/pub/security/AST-2017-011.html                

                                Revision History
                     Date                       Editor       Revisions Made   
    October 19, 2017                         Kevin Harwell  Initial Revision  

               Asterisk Project Security Advisory - AST-2017-011
              Copyright (c) 2017 Digium, Inc. All Rights Reserved.
  Permission is hereby granted to distribute and publish this advisory in its
                           original, unaltered form.