IC81837: SECURITY: DENIAL OF SERVICE SECURITY VULNERABILITY IN DB2'S XML FEATURE (CVE-2012-0712).

APAR status

• Closed as program error.

Error description

• There is a security vulnerability in the DB2's XML Feature which
  would allow an authenticated, malicious user to remotely
  cause a denial of service.  To exploit the vulnerability, the
  user would need to have valid security credentials, and CONNECT
  and CREATEIN privilege to the database.
  

Local fix

• The vulnerability could be mitigated by revoking CONNECT and
  CREATEIN privilege from public.
  
  REVOKE CONNECT ON DATABASE FROM PUBLIC
  REVOKE IMPLICIT_SCHEMA ON DATABASE FROM PUBLIC
  
  REVOKE CONNECT ON DATABASE FROM PUBLIC
  REVOKE IMPLICIT_SCHEMA ON DATABASE FROM PUBLIC
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All DB2 systems on all Linux, Unix and Windows platforms at  *
  * service levels Version 9.8 GA  through to Version 9.8 Fix    *
  * Pack 4.                                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 Version 9.8 Fix Pack 5.                       *
  ****************************************************************
  

Problem conclusion

• The complete fix for this problem first appears in DB2 Version
  9.8 Fix Pack 5 and all the subsequent Fix Packs.
  

Temporary fix

Comments

APAR Information

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

  IC80736

• 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

• R950 PSN

     UP

• R970 PSN

     UP

• R980 PSN

     UP