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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.2929
   Jul 2018 CPU affects DB2 Recovery Expert for Linux, Unix and Windows
                               6 August 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Db2 Recovery Expert
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
                   Windows
Impact/Access:     Access Privileged Data          -- Remote/Unauthenticated      
                   Execute Arbitrary Code/Commands -- Existing Account            
                   Increased Privileges            -- Existing Account            
                   Create Arbitrary Files          -- Remote with User Interaction
                   Denial of Service               -- Remote/Unauthenticated      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-12539 CVE-2018-2952 CVE-2018-1656
                   CVE-2017-3736 CVE-2017-3732 CVE-2016-0705

Reference:         ESB-2019.0077.2
                   ESB-2016.0543.2

Original Bulletin: 
   https://www.ibm.com/support/docview.wss?uid=ibm10964590

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: IBM SDK, Java Technology Edition Quarterly CPU - Jul 2018 -
Includes Oracle Jul 2018 CPU affects DB2 Recovery Expert for Linux, Unix and
Windows

Document information
Component: --
Software version: 5.1.0
Operating system(s): AIX, HP-UX, Linux, Solaris, Windows
Modified date: 02 August 2019

Summary

There are multiple vulnerabilities in IBM SDK Java Technology Edition,
Version 6, Version 7 ,version 8, that is used by DB2 Recovery Expert for Linux,
Unix and Windows. These issues were disclosed as part of the IBM Java SDK
updates in July 2018.

Vulnerability Details

CVEID: CVE-2016-0705
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a
double-free error when parsing DSA private keys. An attacker could exploit this
vulnerability to corrupt memory and cause a denial of service.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
111140 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2017-3736
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by a carry propagation flaw in the x86_64 Montgomery
squaring function bn_sqrx8x_internal(). An attacker with online access to an
unpatched system could exploit this vulnerability to obtain information about
the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
134397 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-2017-3732
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by a carry propagating bug in the x86_64 Montgomery
squaring procedure. An attacker could exploit this vulnerability to obtain
information about the private key.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
121313 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2018-2952
DESCRIPTION: An unspecified vulnerability in Oracle Java SE related to the Java
SE, Java SE Embedded, JRockit Concurrency component could allow an
unauthenticated attacker to cause a denial of service resulting in a low
availability impact using unknown attack vectors.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
146815 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2018-1656
DESCRIPTION: The IBM Java Runtime Environment's Diagnostic Tooling Framework
for Java (DTFJ) does not protect against path traversal attacks when extracting
compressed dump files.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
144882 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N)

CVEID: CVE-2018-12539
DESCRIPTION: Eclipse OpenJ9 could allow a local attacker to gain elevated
privileges on the system, caused by the failure to restrict the use of Java
Attach API to connect to an Eclipse OpenJ9 or IBM JVM on the same machine and
use Attach API operations to only the process owner. An attacker could exploit
this vulnerability to execute untrusted native code and gain elevated
privileges on the system.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
148389 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

DB2 Recovery Expert for LUW  5.1
DB2 Recovery Expert for LUW  5.1 Interim Fix 1 (IF1)
DB2 Recovery Expert for LUW  5.1.0.1 (also called 5.1 Fix Pack 1)
DB2 Recovery Expert for LUW  5.1.0.1 IF1
DB2 Recovery Expert for LUW  5.1.0.1 IF2
DB2 Recovery Expert for LUW  5.1.0.2 (also called 5.1 Fix Pack 2)
DB2 Recovery Expert for LUW  5.1.0.2 IF1

Remediation/Fixes

+-----------------------------------------------------------------+
|Product |VRMF    |Remediation/First Fix                          |
|--------+--------+-----------------------------------------------|
|DB2     |        |                                               |
|Recovery|        |https://www.ibm.com/support/fixcentral/swg/    |
|Expert  |        |selectFixes?parent=                            |
|for     |        |ibm%7EInformation%20Management&product=ibm/    |
|Linux,  |had been|Information+Management/                        |
|Unix and|fixed in|DB2+Recovery+Expert+for+Linux+UNIX+and+Windows&|
|Windows |V5.1.0.3|release=All&platform=All&function=all          |
+-----------------------------------------------------------------+

Workarounds and Mitigations

There are no workarounds except to replace to the latest JRE.
To solve the problem without updating the entire Recovery Expert product, the
user can replace the existing JRE that is installed into the product
installation tree in the jre directory with a newer JRE that includes the
security fixes.

Instructions to replace the IBM JRE for DB2 Recovery Expert for Linux, UNIX and
Windows

1. Identify the version and platform of your DB2 Recovery Expert installation.
2. See the table below to find the IBM JRE download link that matches your
product version and platform. If you cannot find a JRE download link for your
product version and platform, contact IBM Technical Support and refer to this
tech-note
3. Download the zip file (for example: ibm-java-jre-x.x-x.x-linux-x86_64.tgz)
and extract it to a folder on a local file system (for example: /tmp/
ibm-jre-x.x-x.x).
4. Stop the DB2 Recovery Expert server using the stop.sh command (for example:
/opt/ibm/RE/stop.sh).
5. Back-up and then delete the contents of the jre folder from your product
installation directory (for example: /opt/ibm/RE/jre).
6. Copy the contents of the jre folder from the latest IBM JRE that you
downloaded in Step 3 (for example: /tmp/ibm-jre-x.x-x.x/jre/) to the jre
folder in your product installation directory (for example: /opt/ibm/RE/jre/).*
7. Ensure that the file permissions for the new JRE files and folders match the
file permissions for the original JRE files and folders. If necessary, set 775
recursively.
8. Restart the DB2 Recovery Expert server using the start.sh command (for
example: /opt/ibm/RE/start.sh).

* NOTE: You must repeat from Step 6 again any time you install an APAR or
upgrade to an affected version of DB2 Recovery Expert.

Acknowledgement

None

Change History

28 Nov 2018

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