IBM Support

IT45793: TLS BAD LENGTH ERROR WHEN USING TLS VERSION 1.3 AND SESSION CACHING.

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APAR status

  • Closed as program error.

Error description

  • TLS "bad length" error may occur on Datapower when using TLS
v1.3 and session caching.

example:


20231012T143743.858Z [apiconnect][0x8120002f][ssl][error]
ssl-client(some-name): tid(85612279)[1.2.3.4]
gtid(d0cd9361552804b7041b1f73):

TLS library error: error:1409E10F:SSL
routines:ssl3_write_bytes:bad length

Local fix

  • Disable TLS session caching.

Problem summary

  • DataPower might encounter a bad length error from a TLS1.3
client using session caching.

Problem conclusion

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT45793
    • 

  • Reported component name
    DATAPOWER
    • 

  • Reported component ID
    DP1234567
    • 

  • Reported release
    A0X
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2024-03-22
    • 

  • Closed date
    2024-06-21
    • 

  • Last modified date
    2024-06-21
    • 





    

  • 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


    








      
              
                            

              

              [{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SS9H2Y","label":"IBM DataPower Gateways"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"A0X","Line of Business":{"code":"LOB67","label":"IT Automation \u0026 App Modernization"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            22 June 2024
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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