Security Bulletin: IBM® DB2® LUW is affected by the JSON-C vulnerability (CVE-2013-6371)

Summary

IBM® DB2® LUW is affected by a denial of service vulnerability in JavaScript Object Notation (JSON-C), caused by an error in the hash function during string parsing. A remote, unauthorized user could exploit this vulnerability to consume all available CPU resources.

Vulnerability Details

CVE ID: CVE-2013-6371

DESCRIPTION:
DB2 is affected by a denial of service vulnerability in JSON-C, caused by an error in the hash function during string parsing. A remote, unauthorized user could exploit this vulnerability to consume all available CPU resources.

JSON support is disabled by default at the DB2 server. If you do not use JSON in DB2, you are not affected.

CVSS:
CVSS Base Score: 5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/92541&gt; for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Affected Products and Versions

IBM DB2 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.

Note: JSON support was first introduced in DB2 V10.5 FP1 and hence DB2 V9.5, V9.7, V9.8 and V10.1 are not affected.
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Remediation/Fixes

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

The fix for DB2 and DB2 Connect release V10.5 is in V10.5 FP4, available for download from Fix Central.

Download the fix pack from the following:

Contact Technical Support:

In the United States and Canada dial 1-800-IBM-SERV
View the support contacts for other countries outside of the United States.
Electronically open a Service Request with DB2 Technical Support.

Note:_ IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole discretion. Information regarding potential future products is intended to outline our general product direction and it should not be relied on in making a purchasing decision. The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any material, code or functionality. Information about potential future products may not be incorporated into any contract. The development, release, and timing of any future features or functionality described for our products remains at our sole discretion._

Workarounds and Mitigations

None