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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1147
               z/TPF is affected by an OpenSSL vulnerability
                               4 April 2019

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

Product:           IBM z/TPF
Publisher:         IBM
Operating System:  z/TPF
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-1559  

Reference:         ASB-2019.0088
                   ESB-2019.1103
                   ESB-2019.1085
                   ESB-2019.1078
                   ESB-2019.0913

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10878807

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

Security Bulletin: z/TPF is affected by an OpenSSL vulnerability

Document information

More support for: TPF

Component: z/TPF

Software version: 1.1

Operating system(s): z/TPF

Reference #: 0878807

Modified date: 03 April 2019

Summary

The z/TPF version of OpenSSL was updated to address the vulnerability
described by CVE-2019-1559.

Vulnerability Details

CVEID: CVE-2019-1559
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by the failure to immediately close the TCP connection
after the hosts encounter a zero-length record with valid padding. An attacker
could exploit this vulnerability using a 0-byte record padding-oracle attack
to decrypt traffic.
CVSS Base Score: 5.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
157514 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N)

Affected Products and Versions

z/TPF Enterprise Edition Version 1.1

Remediation/Fixes

+----------+----------------------+---------------+-------------------------------------+
|Product   |VRMF                  |APAR           |Remediation/First Fix                |
+----------+----------------------+---------------+-------------------------------------+
|          |                      |               |Apply the APAR, which is available   |
|          |                      |               |for download from the TPF Family     |
|z/TPF     |1.1                   |APAR PJ45693   |Product: Maintenance web page.       |
+----------+----------------------+---------------+-------------------------------------+

Workarounds and Mitigations

None.


Change History

03 April 2019: Original version published

*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.

- --------------------------END INCLUDED TEXT--------------------

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