IBM Support

IT34966: SECURITY: DB2 EXTERNAL TABLE CREATION IS VULNERABLE TO RACE CONDITION ATTACK (CVE-2020-4885)

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APAR status

  • Closed as program error.

Error description

  • The procedure of  DB2 external table creation is vulnerable to
    race condition of symbol link. Any local user on the system
    could exploit this vulnerability to change the configuration of
    DB2.
    See Security Bulletin for details:
    https://www.ibm.com/support/pages/node/6466363
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All DB2 systems on all Linux, Unix and Windows platforms at  *
    * service levels Version 11.5 GA to 11.5.5                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 Version 11.5.6. See Security Bulletin for     *
    * details.                                                     *
    ****************************************************************
    

Problem conclusion

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

Temporary fix

Comments

APAR Information

  • APAR number

    IT34966

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B50

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-11-17

  • Closed date

    2021-06-22

  • Last modified date

    2021-06-23

  • 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

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.5"}]

Document Information

Modified date:
24 June 2021