Security Bulletin: IBM® DB2® LUW on AIX and Linux Affected by vulnerabilities in zlib (CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843).

Summary

IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) is affected by vulnerabilities in zlib.

Vulnerability Details

CVEID: CVE-2016-9840 DESCRIPTION: zlib is vulnerable to a denial of service, caused by an out-of-bounds pointer arithmetic in inftrees.c. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120508 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9841 DESCRIPTION: zlib is vulnerable to a denial of service, caused by an out-of-bounds pointer arithmetic in inftrees.c. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120509 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9842 DESCRIPTION: zlib is vulnerable to a denial of service, caused by an undefined left shift of negative number. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120510 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9843 DESCRIPTION: zlib is vulnerable to a denial of service, caused by a big-endian out-of-bounds pointer. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120511 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

Affected Products and Versions

All fix pack levels and editions of IBM DB2 V9.7, V10.1, V10.5 and V11.1 on all platforms are affected.

Remediation/Fixes

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

FIX:

The fix for DB2 V11.1.1 is in V11.1.2 FP2, available for download from Fix Central.

Customers running any vulnerable fixpack level of an affected Program, V9.7, 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: DB2 V9.7 FP11, V10.1 FP6 and V10.5 FP8. 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 | IT20564 | 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 | FP9 | IT20565 | <http://www-01.ibm.com/support/docview.wss?uid=swg24044110&gt;
  V11.1.2 | FP2 | IT20566 | <http://www-01.ibm.com/support/docview.wss?uid=swg24043789&gt;

Workarounds and Mitigations

None.