IBM Support

IV49906: DHKEYAGREEMENT NEED STRIP LEADING ZEROS FOR TLSPREMASTERSECRET

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APAR status

  • Closed as program error.

Error description

  • Error Message: 1 out 256 SSL/TLS handshakes with DH/DHE cipher
suites to fail (when the leading byte happens, by chance, to be
zero).
.
Stack Trace: N/A
.
N/A

Local fix

  • Disable DH cipher suites.

Problem summary

  • There is no check for leading zeros when generating keys to be
used for pre_master_secret.

Problem conclusion

  • This defect will be fixed in:
7.0.0 SR6
6.0.1 SR7
6.0.0 SR15
.
Avoid using keys that having leading zeros as pre_master_secret.
The associated Austin CMVC defect is 113950.
The associated Hursley CMVC defect is 200028.
Platform affected: All platforms.
JVMs affected: 6.0 7.0.
Jars affected: ibmjceprovider.jar ibmpkcs11impl.jar.
The fix will be available in  60_SR15, 626_SR7, 70_SR6.
The build date is 20130906 for ibmjceprovider.jar and 20130913
for ibmpkcs11impl.jar.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV49906
    • 

  • Reported component name
    SECURITY
    • 

  • Reported component ID
    620700125
    • 

  • Reported release
    260
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2013-09-23
    • 

  • Closed date
    2013-09-23
    • 

  • Last modified date
    2013-09-23
    • 





    

  • 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
    SECURITY
    • 

  • Fixed component ID
    620700125
    • 



Applicable component levels


    

  • R260  PSY
       UP
    • 

  • R600  PSY
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            07 December 2020
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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