Security Bulletin: Under specialized conditions, IBM® Db2® is vulnerable to denial of service (CVE-2019-4101).

Summary

Db2 is vulnerable to a denial of service. Users that have both EXECUTE on PD_GET_DIAG_HIST and access to the diagnostic directory on the DB2 server can cause the instance to crash.

Vulnerability Details

CVEID: CVE-2019-4101 DESCRIPTION: DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) is vulnerable to a denial of service. Users that have both EXECUTE on PD_GET_DIAG_HIST and access to the diagnostic directory on the DB2 server can cause the instance to crash.
CVSS Base Score: 6.2
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/158091&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

All fix pack levels of IBM Db2 V10.1, V10.5, and V11.1 editions on all platforms are affected. Db2 V9.7 is not affected.

Remediation/Fixes

The recommended solution is to apply the appropriate fix for this vulnerability.

FIX:

The fix for Db2 V11.1 is in V11.1.4.5, available for download from Fix Central.

The fix for Db2 V10.5 is in V10.5.0.11, available for download from Fix Central.

Customers running any vulnerable fixpack level of an affected Program, V10.1 and V10.5, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent fixpack level for each impacted release: V10.1 FP6 and V10.5 FP10. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.

Images published before July 24, 2019 have an issue with db2iupdt. Customers that have downloaded a special build before July 24, 2019 should delete the image and re-download with the updated links below. Alternatively, see this technote for instructions on how to manually resolve the issue with older images: <http://www.ibm.com/support/docview.wss?uid=ibm10959065&gt;

AIX 64-bit
HP-UX 64-bit
Linux 32-bit, x86-32
Linux 64-bit, x86-64
Linux 64-bit, POWER™ big endian
Linux 64-bit, System z®, System z9® or zSeries®
Solaris 64-bit, SPARC
Solaris 64-bit, x86-64
Windows 32-bit, x86
Windows 64-bit, x86

V10.5 | FP11 | IT28251 |

<https://www.ibm.com/support/pages/node/3500079&gt;

V11.1 | FP5 | IT28255 | http://www.ibm.com/support/docview.wss?uid=ibm11115973

Workarounds and Mitigations

None.