PI23733: RATIONAL DEVELOPER FOR SYSTEM Z (RDZ) ALLOWS LOGIN WITH REVOKED CERTIFICATES

9.0.1.4: UI28242 PTF for Rational Developer for System z Host Options
UI37287 PTF for Rational Developer for System z Host Options
9.0.1.5: UI37834 PTF for Rational Developer for System z Host Options
9.0.1.6: UI47123 PTF for Rational Developer for System z Host
Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• In RDz v9.0.0, the user has created a user certificate with
  HostIdMappings certificate extension defined to RACF.  The
  client can login  using this certificate instead of userid and
  password.
  
  If the admin revokes the certificate, and adds to the CRL, it is
  expected that the client will not be able to login. However,
  there is no check for the revocation and the login is
  successful.
  
  This is a  potential security exposure.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: 01.All RDz users who login by certificates   *
  ****************************************************************
  * PROBLEM DESCRIPTION: 01.User can login using revoked         *
  *                         certificate                          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  01.A user can login using a revoked certificate via "Remote
     daemon" z/OS connection with certificate authentication
     method.
  

Problem conclusion

• 01.The code is updated to check the CRL on a LDAP server in a
     remote daemon connection.
  

Temporary fix

Comments

APAR Information

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

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

Modules/Macros

•    FEKFZOS
  

Fix information

• Fixed component name

  RD/Z HOST

• Fixed component ID

  5724T0723

Applicable component levels

• R900 PSY UI28242

     UP15/06/08 I 1000

Fix is available

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