IT29425: SECURITY: CERTAIN DB2 COMMANDS MAY LEAD TO INFORMATION DISCLOSURE WHEN AUTO_REVAL IS SET TO DEFERRED_FORCE (CVE-2019-4438)

APAR status

• Closed as program error.

Error description

• Certain Db2 commands may lead to information disclosure
  when AUTO_REVAL database configuration parameter is set to
  DEFERRED_FORCE.
  See security bulletin for details:
  https://www.ibm.com/support/pages/node/1117203
  

Local fix

• Unset AUTO_REVAL in order to mitigate this vulnerability.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All DB2 systems on all Linux, Unix and Windows platforms at  *
  * service levels Version 11.1 GA  through to Version 11.1 Fix  *
  * Pack 4 iFix001.                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 Version 11.1.4.5. See Security Bulletin for   *
  * details.                                                     *
  ****************************************************************
  

Problem conclusion

• The complete fix for this problem first appears in DB2 Version
  11.1.4.5 and all the subsequent Fix Packs.
  

Temporary fix

Comments

APAR Information

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

  IT29412

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

  IT30744

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

     UP