Security Bulletin: Multiple Vulnerabilities in Java affect the IBM FlashSystem models 840 and 900

Summary

There are vulnerabilities in Java to which the IBM FlashSystem™ 840 and FlashSystem 900 are susceptible (CVE-2018-2783, CVE-2018-1517, CVE-2018-12539, CVE-2018-3180, and CVE-2018-12547). An exploit of CVE-2018-12547 could make the system susceptible to a buffer overflow which could allow a remote attacker to execute arbitrary code on the system or cause an application crash. An exploit of CVE-2018-2783 or CVE-2018-3180 could allow an attacker to impact confidentiality, integrity, and availability. An exploit of CVE-2018-1517 could allow an attacker to inflict a denial-of-service attack. Finally, an exploit of CVE-2018-12539 could allow execute untrusted native code and gain elevated privileges on the system.

Vulnerability Details

CVEID: CVE-2018-12547 DESCRIPTION: Eclipse OpenJ9 is vulnerable to a buffer overflow, caused by improper bounds checking by the jio_snprintf() and jio_vsnprintf() functions. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 9.8
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/157512&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

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&gt; 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-2018-2783 DESCRIPTION: An unspecified vulnerability in Oracle Java SE related to the Java SE, Java SE Embedded, JRockit Security component could allow an unauthenticated attacker to cause high confidentiality impact, high integrity impact, and no availability impact.
CVSS Base Score: 7.4
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/141939&gt; 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:H/A:N)

CVEID: CVE-2018-1517 DESCRIPTION: A flaw in the java.math component in IBM SDK, Java Technology Edition may allow an attacker to inflict a denial-of-service attack with specially crafted String data.
CVSS Base Score: 5.9
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/141681&gt; 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:H)

CVEID: CVE-2018-3180 DESCRIPTION: An unspecified vulnerability in Oracle Java SE related to the Java SE, Java SE Embedded, JRockit JSSE component could allow an unauthenticated attacker to cause low confidentiality impact, low integrity impact, and low availability impact.
CVSS Base Score: 5.6
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/151497&gt; 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

FlashSystem 840 machine type and models (MTMs) affected include 9840-AE1 and 9843-AE1.
FlashSystem 900 MTMs affected include 9843-UF3, 9840-AE2, 9843-AE2, 9840-AE3, and 9843-AE3.

Supported code versions which are affected

• VRMFs prior to 1.5.2.5
• VRMFs prior to 1.6.1.0

Remediation/Fixes

MTMs

| VRMF | APAR | Remediation/First Fix
—|—|—|—
FlashSystem****840 MTM:
9840-AE1 &9843-AE1

**FlashSystem 900 MTMs:**9843-UF3, 9840-AE2, 9843-AE2, 9840-AE3, & 9843-AE3 |

Code fixes are now available, the minimum VRMF containing the fix depends on the code stream:_ _
__Fixed Code VRMF __
1.6 stream: 1.6.1.0

1.5 stream: 1.5.2.5

| N/A | FlashSystem 840 fixesand FlashSystem 900 fixes****are available @ IBM’s Fix Central

Workarounds and Mitigations

Upgrade to a remediated code level.