IBM Support

IT36963: ECC CERTIFICATES FAIL TO BE RECOGNIZED WHEN ONLY TLSV1.3 CIPHER SUITES ARE AVAILABLE

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 

APAR status

  • Closed as program error.

Error description

  • DataPower fails to recognize ECC style certificates when only
TLSv1.3 cipher suites are used in a TLS Server Profile.

TLSv1.3 Specific suites:
AES_256_GCM_SHA384 (TLSv1.3)
CHACHA20_POLY1305_SHA256 (TLSv1.3)
AES_128_GCM_SHA256 (TLSv1.3)

Local fix

  • Adding a TLSv1.2 cipher suite that supports ECC certificates
(ECDSA) in the list of approved CipherSuites will allow the
Certificate to be recognized.
Example:
ECDHE_ECDSA_WITH_AES_256_GCM_SHA384

Problem summary

  • A server or client profile with TLS 1.3 enabled and using an ECC
certificate incorrectly required an ECDSA cipher.

Problem conclusion

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT36963
    • 

  • Reported component name
    DATAPOWER
    • 

  • Reported component ID
    DP1234567
    • 

  • Reported release
    A0X
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2021-05-19
    • 

  • Closed date
    2021-08-03
    • 

  • Last modified date
    2021-08-03
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    • 



Fix information


    

  • Fixed component name
    DATAPOWER
    • 

  • Fixed component ID
    DP1234567
    • 



Applicable component levels


    








      
              
                            

              

              [{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS9H2Y","label":"IBM DataPower Gateways"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"A0X"}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            04 August 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
Page Feedback