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AUSCERT External Security Bulletin Redistribution
ESB-2019.3822
Security Bulletin: Multiple vulnerabilities in IBM Java
Runtime affect z/TPF
14 October 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM z/TPF
Publisher: IBM
Operating System: z/TPF
Impact/Access: Increased Privileges -- Existing Account
Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11775 CVE-2019-11772 CVE-2019-7317
CVE-2019-2816 CVE-2019-2786 CVE-2019-2769
CVE-2019-2766 CVE-2019-2762
Reference: ASB-2019.0212
ESB-2019.3810
ESB-2019.3745
ESB-2019.3742
Original Bulletin:
https://www.ibm.com/support/pages/node/1073582
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect z/TPF
Document Information
Product : TPF
Component : z/TPF
Software version : 1.1
Operating system(s): z/TPF
Reference # : 1073582
Modified date : 11 October 2019
Summary
There are multiple vulnerabilities in IBM(R) Runtime Environment Java(TM) Version 8
used by the z/TPF system. z/TPF has addressed the applicable CVEs.
Vulnerability Details
If you run your own Java code using the IBM Java Runtime delivered with this
product, you should evaluate your code to determine whether the complete list
of vulnerabilities are applicable to your code. For a complete list of
vulnerabilities please refer to the link for "IBM Java SDK Security Bulletin"
located in the "References" section for more information.
CVEID: CVE-2019-7317
DESCRIPTION: libpng is vulnerable to a denial of service, caused by a
use-after-free in png image free in png.c. By persuading a victim to open a
specially-crafted file, a remote attacker could exploit this vulnerability to
cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
156548 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
CVEID: CVE-2019-2769
DESCRIPTION: An unspecified vulnerability related to the Java SE Utilities
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: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
163832 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2019-2762
DESCRIPTION: An unspecified vulnerability related to the Java SE Utilities
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: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
163826 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2019-2816
DESCRIPTION: An unspecified vulnerability related to the Java SE Networking
component could allow an unauthenticated attacker to cause low confidentiality
impact, low integrity impact, and no availability impact.
CVSS Base Score: 4.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
163878 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:N)
CVEID: CVE-2019-2786
DESCRIPTION: An unspecified vulnerability related to the Java SE Security
component could allow an unauthenticated attacker to obtain sensitive
information resulting in a low confidentiality impact using unknown attack
vectors.
CVSS Base Score: 3.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
163849 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N)
CVEID: CVE-2019-2766
DESCRIPTION: An unspecified vulnerability related to the Java SE Networking
component could allow an unauthenticated attacker to obtain sensitive
information resulting in a low confidentiality impact using unknown attack
vectors.
CVSS Base Score: 3.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
163829 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N)
CVEID: CVE-2019-11772
DESCRIPTION: Eclipse OpenJ9 could allow a local attacker to gain elevated
privileges on the system, caused by an out-of-bounds write in the
String.getBytes method. An attacker could exploit this vulnerability to
corrupt memory and write to any 32-bit address or beyond the end of a byte
array within Java code run under a SecurityManager.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
163990 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)
CVEID: CVE-2019-11775
DESCRIPTION: Eclipse OpenJ9 could allow a local attacker to gain elevated
privileges on the system, caused by an error where the loop versioner fails to
privatize a value that is pulled out of the loop by versioning. An attacker
could exploit this vulnerability to corrupt memory and trigger an
out-of-array-bounds and perform invalid actions.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
164479 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
z/TPF Enterprise Edition Version 1.1
Remediation/Fixes
+---------+------------+-------------+---------------------------------------+
|Product |VRMF |APAR |Remediation/First Fix |
+---------+------------+-------------+---------------------------------------+
| | | |Download and install the |
| | | |PJ45880_ibm-java-jre-8.0-5.40 package |
| | | |from the IBM 64-bit Runtime Environment|
| | | |for z/TPF, Java Technology Edition, |
|z/TPF |1.1 |PJ45880 |Version 8 download page. |
+---------+------------+-------------+---------------------------------------+
Workarounds and Mitigations
None
Change History
11 October 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.
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