IT27199: SECURITY: PRIVILEGE ESCALATION IN ROOT SETUID EXECUTABLE (CVE-2019-4094)

Db2 Version 11.1 Mod4 Fix Pack4 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 5 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 7 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• A vulnerability exists in a setuid root executable which loads
  libraries from an untrusted path in a privileged context. See
  Security Bulletin for details:
  https://www.ibm.com/support/docview.wss?uid=ibm10875860
  

Local fix

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.                                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 Version 11.1.4.4 iFix001.                     *
  ****************************************************************
  

Problem conclusion

• The complete fix for this problem first appears in DB2 Version
  11.1.4.4 iFix001 and all the subsequent Fix Packs.
  

Temporary fix

Comments

APAR Information

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

  IT27191

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

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

     UP