APAR status
Closed as program error.
Error description
Error Message: Low key length Diffie-Helman groups can be easily broken. But there is no way to specify the DH keysize in Java 7 and before. Java 8 does have jdk.tls.ephemeralDHKeySize which can be set. . Stack Trace: N/A .
Local fix
Problem summary
No support of customizing DH keysize when using JSSE in Java 7 and before
Problem conclusion
The JSSE code in Java 7 and before is enhanced to allow setting jdk.tls.ephemeralDHKeySize as in Java 8 to customize DH keysize. The affected jar is "ibmjsseprovider2.jar". The build level of this jar for the affected releases is "20150910" . This APAR will be fixed in the following Java Releases: 6 SR16 FP15 (6.0.16.15) 5.0 SR16 FP14 (5.0.16.14) 6 R1 SR8 FP15 (6.1.8.15) 7 R1 SR3 FP20 (7.1.3.20) 7 SR9 FP20 (7.0.9.20) . Contact your IBM Product's Service Team for these Service Refreshes and Fix Packs. For those running stand-alone, information about the available Service Refreshes and Fix Packs can be found at: https://www.ibm.com/developerworks/java/jdk/
Temporary fix
Comments
APAR Information
APAR number
IV78753
Reported component name
SECURITY
Reported component ID
620700125
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-11-11
Closed date
2015-11-11
Last modified date
2015-11-11
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
R600 PSY
UP
R260 PSY
UP
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Document Information
Modified date:
07 December 2020