Security Bulletin: IBM® Db2® is vulnerable to denial of service (CVE-2020-4135).

Summary

Db2 is vulnerable to a denial of service. Db2 could allow an attacker to send specially crafted packets to the Db2 server to cause excessive memory usage and cause Db2 to terminate abnormally.

Vulnerability Details

CVEID:CVE-2020-4135
**DESCRIPTION:**IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow an unauthenticated user to send specially crafted packets to cause a denial of service from excessive memory usage.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/173806 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/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 V9.7, V10.1, V10.5, V11.1, and V11.5 editions on all platforms are affected.

Remediation/Fixes

Customers running any vulnerable fixpack level of an affected Program, V9.7, V10.1, V10.5, V11.1, V11.5 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: V9.7 FP11, V10.1 FP6, V10.5 FP10, V11.1 FP5 V11.5 GA. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.

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

V10.1| TBD| IT31522| Special Build for V10.1 FP6:

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| TBD| IT31517| Special Build for V10.5 FP10:

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, POWER™ little 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
Inspur

V11.1|

v11.1.4FP6

| IT31521|

Build for v11.1.4FP6

<https://www.ibm.com/support/pages/node/6427871&gt;

V11.5| TBD| IT31520| Special Build for V11.5 GA:

AIX 64-bit
Linux 32-bit, x86-32
Linux 64-bit, x86-64
Linux 64-bit, POWER™ little endian
Linux 64-bit, System z®, System z9® or zSeries®
Windows 32-bit, x86
Windows 64-bit, x86

Note: Windows 32-bit and 64-bit links for Db2 V9.7 and V10.1 will be published by March, 2020.

Workarounds and Mitigations

None