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Security Bulletin: IBM® Db2® sensitive information exposure in the error log (CVE-2017-1434).

Security Bulletin


Summary

When a version check to upgrade Db2 to v11.x fails, the connection string is written in the clear in an error message to db2diag.log.

Vulnerability Details

CVEID: CVE-2017-1434
DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) under unusual circumstances, could expose highly sensitive information in the error log to a local user.
CVSS Base Score: 5.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/127806 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

All fix pack levels for server editions of IBM Db2 V11.1 on all platforms are affected.

Remediation/Fixes

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

FIX:

Customers running any vulnerable fixpack level of an affected Program, V11.1, 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: V11.1.2.2 FP2. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.
 

 
Release Fixed in fix pack APAR Download URL
V11.1.2.2 iFix001 IT21347 http://www-01.ibm.com/support/docview.wss?uid=swg24044133

 

Workarounds and Mitigations

When running the version check tool db2ckupgrade to upgrade Db2 to V11.x and providing the tool with the password to connect to Db2, if the upgrade fails, search the db2diag.log for the record with the connection string written in the clear and delete the record.

Sample record:


2017-04-19-14.31.51.488000-240 I31814496F2169 LEVEL: Error
PID : 1496 TID : 2236 PROC : db2ckupgrade.exe
INSTANCE: SERVER1 NODE : 000
HOSTNAME: NAME
EDUID : 2236
FUNCTION: <0>, <0>, <0>, probe:6541
MESSAGE : Could not get a exclusive connection
DATA #1 : SQLCA, PD_DB2_TYPE_SQLCA, 136 bytes
0x00000026293ADF30 : 0000 0000 0000 0000 0000 0000 7E8A FFFF ............~...
0x00000026293ADF40 : 0000 0000 0000 0000 0000 0000 0000 0000 ................
0x00000026293ADF50 : 0000 0000 0000 0000 0000 0000 0000 0000 ................
0x00000026293ADF60 : 0000 0000 0000 0000 0000 0000 0000 0000 ................
0x00000026293ADF70 : 0000 0000 0000 0000 0000 0000 0000 0000 ................
0x00000026293ADF80 : 0000 0000 0000 0000 0000 0000 0000 0000 ................
0x00000026293ADF90 : 0000 0000 0000 0000 0000 0000 0000 0000 ................
0x00000026293ADFA0 : 0000 0000 0000 0000 0000 0000 0000 0000 ................
0x00000026293ADFB0 : 0000 0000 0000 0000 ........
DATA #2 : String, 52 bytes
DSN=DB;UID=user;PWD=xxxxxxx;;MODE=EXCLUSIVE;

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Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

September 7, 2017: Original version published.
July 11, 2018: Updated V11.1 link.

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document information

More support for: DB2 for Linux, UNIX and Windows

Component: Install/Migrate/Upgrade - Database

Software version: 11.1

Operating system(s): AIX, HP-UX, Linux, Solaris, Windows

Software edition: Advanced Enterprise Server, Advanced Workgroup Server, Enterprise Server, Express, Express-C, Personal, Workgroup Server

Reference #: 2005740

Modified date: 17 August 2018