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AST-2014-018: AMI permission escalation through DB dialplan function



               Asterisk Project Security Advisory - AST-2014-018

         Product        Asterisk                                              
         Summary        AMI permission escalation through DB dialplan         
                        function                                              
    Nature of Advisory  Permission Escalation                                 
      Susceptibility    Remote Authenticated Sessions                         
         Severity       Minor                                                 
      Exploits Known    No                                                    
       Reported On      November 17, 2014                                     
       Reported By      Gareth Palmer                                         
        Posted On       20 November, 2014                                     
     Last Updated On    November 20, 2014                                     
     Advisory Contact   Kevin Harwell <kharwell AT digium DOT com>            
         CVE Name       Pending                                               

    Description  The DB dialplan function when executed from an external      
                 protocol (for instance AMI), could result in a privilege     
                 escalation.                                                  

    Resolution  Asterisk now inhibits the  DB function from being executed    
                from an external interface if the live_dangerously option is  
                set to no.                                                    

                               Affected Versions       
                         Product                       Release  
                                                       Series   
                   Certified Asterisk                    1.8    All versions  
                   Certified Asterisk                   11.6    All versions  
                  Asterisk Open Source                  1.8.x   All versions  
                  Asterisk Open Source                  11.x    All versions  
                  Asterisk Open Source                  12.x    All versions  
                  Asterisk Open Source                  13.x    All versions  

                                  Corrected In
          Product                              Release                        
    Asterisk Open Source           1.8.32.1,11.14.1, 12.7.1, 13.0.1           
     Certified Asterisk                1.8.28-cert3,11.6-cert8                

                                      Patches                          
                                 SVN URL                               Revision  
   http://downloads.asterisk.org/pub/security/AST-2014-018-1.8.28.diff Certified 
                                                                       Asterisk  
                                                                       1.8       
   http://downloads.asterisk.org/pub/security/AST-2014-018-11.6.diff   Certified 
                                                                       Asterisk  
                                                                       11.6      
   http://downloads.asterisk.org/pub/security/AST-2014-018-1.8.diff    Asterisk  
                                                                       1.8       
   http://downloads.asterisk.org/pub/security/AST-2014-018-11.diff     Asterisk  
                                                                       11        
   http://downloads.asterisk.org/pub/security/AST-2014-018-12.diff     Asterisk  
                                                                       12        
   http://downloads.asterisk.org/pub/security/AST-2014-018-13.diff     Asterisk  
                                                                       13        

    Links  https://issues.asterisk.org/jira/browse/ASTERISK-24534             

    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-2014-018.pdf and             
    http://downloads.digium.com/pub/security/AST-2014-018.html                

                                Revision History
          Date            Editor                  Revisions Made              
    November 18, 2014  Kevin Harwell  Initial advisory created                

               Asterisk Project Security Advisory - AST-2014-018
              Copyright (c) 2014 Digium, Inc. All Rights Reserved.
  Permission is hereby granted to distribute and publish this advisory in its
                           original, unaltered form.