ESB-2019.0663 - IBM z/TPF: Multiple vulnerabilities 2019-03-04

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0663
           Security Bulletin: z/TPF is affected by GNU C library
                          (glibc) vulnerabilities
                               4 March 2019

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

Product:           IBM z/TPF
Publisher:         IBM
Operating System:  z/TPF
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-9761 CVE-2011-1071 

Reference:         ESB-2018.1013
                   ESB-2017.1881
                   ESB-2017.1253
                   ESB-2017.0753

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10874268

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Security Bulletin: z/TPF is affected by GNU C library (glibc) vulnerabilities

Document information

More support for: TPF

Component: z/TPF

Software version: 1.1

Operating system(s): z/TPF

Reference #: 0872656

Modified date: 01 March 2019

Summary

The GNU C library (glibc) provided with the z/TPF system was updated to
address the vulnerabilities described by CVE-2011-1071 and CVE-2014-9761.

Vulnerability Details

CVEID: CVE-2011-1071
DESCRIPTION: GNU C Library could allow a remote attacker to execute arbitrary
code on the system, caused by an error in the fnmatch() function. By
persuading the application into using the function, a remote attacker could
exploit this vulnerability to corrupt the stack and execute arbitrary code on
the system.
CVSS Base Score: 6.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
65671 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVEID: CVE-2014-9761
DESCRIPTION: GNU C Library (glibc) is vulnerable to a stack-based buffer
overflow, caused by improper bounds checking by the nan function. By sending
an overly long string, a remote attacker could overflow a buffer and execute
arbitrary code on the system or cause the application to crash.
CVSS Base Score: 5.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
111085 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:L/A:L)

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 PJ45634   |Product: Maintenance web page.       |
+----------+----------------------+---------------+-------------------------------------+

Workarounds and Mitigations

None.


Change History

1 March 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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