Security Bulletin: Vulnerabilities in the GSKit component of IBM® DB2® LUW (CVE-2016-0201, CVE-2015-7420 & CVE-2015-7421)

Summary

Vulnerabilities have been addressed in the GSKit component of IBM DB2 LUW.

Vulnerability Details

CVEID: CVE-2016-0201 DESCRIPTION: IBM GSKit could allow a remote attacker to obtain sensitive information, caused by a MD5 collision. An attacker could exploit this vulnerability to obtain authentication credentials.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109310 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2015-7420**
DESCRIPTION:** A vulnerability in GSKit could allow a remote attacker to obtain sensitive information. The GSKit PRNG state is duplicated during a fork() system call operation which results in a period of time where child processes may generate identical PRNG output to the parent.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107694 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2015-7421**
DESCRIPTION:** A vulnerability in GSKit could allow a remote attacker to obtain sensitive information. The internal ICC PRNG pool state is duplicated during a fork() system call operation which results in a period of time where child processes may generate identical PRNG output to the parent. This may allow possible attacks related to predicable state which an attacker could exploit.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107695 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

Customers who have Secure Sockets Layer (SSL) support enabled in their DB2 database system are affected. SSL support is not enabled in DB2 by default.

All fix pack levels of IBM DB2 V9.7, V10.1 and V10.5 editions listed below and running on AIX, Linux, HP, Solaris or Windows are affected.

IBM® DB2® Express Edition
IBM® DB2® Workgroup Server Edition
IBM® DB2® Enterprise Server Edition
IBM® DB2® Advanced Enterprise Server Edition
IBM® DB2® Advanced Workgroup Server Edition
IBM® DB2® Connect™ Application Server Edition
IBM® DB2® Connect™ Enterprise Edition
IBM® DB2® Connect™ Unlimited Edition for System i®
IBM® DB2® Connect™ Unlimited Edition for System z®

The DB2 Connect products mentioned are affected only if a local database has been created.

IBM® DB2® pureScale™ Feature for Enterprise Server Edition, V9.8, running on AIX or Linux is affected.

Remediation/Fixes

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

FIX:
The fix for DB2 and DB2 Connect release V10.1 is in V10.1 FP6 and V10.5 is in V10.5 FP8, available for download from Fix Central.

Customers running any vulnerable fixpack level of an affected Program, V9.7 and V9.8 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 and DB2 V9.8 FP5. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.

Refer to the following chart to determine how to proceed to obtain a needed fixpack or special build.

Workarounds and Mitigations

None