Security Bulletin: Multiple vulnerabilities in IBM Java SDK and IBM Java Runtime affect IBM i

Summary

There are multiple vulnerabilities in IBM® SDK Java™ Technology Edition and IBM® Runtime Environment Java™ used by IBM i. IBM i 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 additional Java vulnerabilities are applicable to your code. For a complete list of vulnerabilities, refer to the “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)

CVEID: CVE-2019-4473 DESCRIPTION: Multiple binaries in IBM SDK, Java Technology Edition on the AIX platform use insecure absolute RPATHs, which may facilitate code injection and privilege elevation by local users.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/163984 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-2019-11771 DESCRIPTION: Eclipse OpenJ9 could allow a local attacker to gain elevated privileges on the system, caused by the inclusion of unused RPATHS in AIX builds. An attacker could exploit this vulnerability to inject code and gain elevated privileges on the system.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/163989 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

Releases 7.4, 7.3, 7.2 and 7.1 of IBM i are affected.

Remediation/Fixes

The issue can be fixed by applying a PTF to the IBM i Operating System.

Releases 7.4, 7.3, 7.2 and 7.1 of IBM i are supported and will be fixed.
Please see the Java document at this URL for the latest Java information for IBM i:
<https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/IBM i Technology Updates/page/Java on IBM i&gt;

The IBM i Group PTF numbers containing the fix for these CVEs follow. Future Group PTFs for Java will also contain the fixes for these CVEs.

Release 7.4 – SF99665 level 4
Release 7.3 – SF99725 level 15
Release 7.2 – SF99716 level 23
Release 7.1 – SF99572 level 38

Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

None