Security Bulletin: IBM Netezza Host Management is affected by the vulnerabilities known as Intel Microarchitectural Data Sampling (MDS) and other Kernel vulnerabilities

Summary

IBM Netezza Host Management is affected by the vulnerabilities known as Intel Microarchitectural Data Sampling (MDS). There are Microarchitectural (hardware) implementation issues that could allow an unprivileged local attacker to bypass conventional memory security restrictions in order to gain read access to privileged memory that would otherwise be inaccessible.

Vulnerability Details

CVEID: CVE-2019-11091 DESCRIPTION: Intel Microprocessor could allow a local authenticated attacker to obtain sensitive information, caused by a Microarchitectural Data Sampling Uncacheable Memory (MDSUM) vulnerability that allows uncacheable memory on some microprocessors utilizing speculative execution. An attacker could exploit this vulnerability using a side-channel attack to obtain data that is being processed in the CPU by other apps. Note: This is called the Zombieload attack.
CVSS Base Score: 3.8
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160993&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N)

CVEID: CVE-2018-12130 DESCRIPTION: Intel Microprocessor could allow a local authenticated attacker to obtain sensitive information, caused by a Microarchitectural Data Sampling (MDS) vulnerability that fills buffers on some microprocessors utilizing speculative execution. An attacker could exploit this vulnerability using a side-channel attack to obtain data that is being processed in the CPU by other apps. Note: This is called the Zombieload attack.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160992&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

CVEID: CVE-2018-12127 DESCRIPTION: Intel Microprocessor could allow a local authenticated attacker to obtain sensitive information, caused by a Microarchitectural Data Sampling (MDS) vulnerability that fills buffers on some microprocessors utilizing speculative execution. An attacker could exploit this vulnerability using a side-channel attack to obtain data that is being processed in the CPU by other apps. Note: This is called the Zombieload attack.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160991&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

CVEID: CVE-2018-12126 DESCRIPTION: Intel Microprocessor could allow a local authenticated attacker to obtain sensitive information, caused by a Microarchitectural Data Sampling (MDS) vulnerability that stores buffers on some microprocessors utilizing speculative execution. An attacker could exploit this vulnerability using a side-channel attack to obtain data that is being processed in the CPU by other apps. Note: This is called the Zombieload attack.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160990&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

CVEID: CVE-2019-11478 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by an issue with fragmenting the TCP retransmission queue when processing TCP Selective Acknowledgement (SACK) capabilities. By sending specially-crafted SACKs requests, a remote attacker could exploit this vulnerability to cause an excess of system resource usage.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/162664&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:N/I:N/A:H)

CVEID: CVE-2019-11477 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by an integer overflow when processing TCP Selective Acknowledgement (SACK) capabilities. By sending specially-crafted SACKs requests, a remote attacker could exploit this vulnerability to cause a kernel panic condition.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/162662&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:N/I:N/A:H)

CVEID: CVE-2019-11479 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by a flaw when processing minimum segment size (MSS). By sending specially-crafted MSS traffic, a remote attacker could exploit this vulnerability to cause excess usage of system resources.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/162665&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:N/I:N/A:H)

CVEID: CVE-2019-3896 DESCRIPTION: Linux Kernel could allow a local authenticated attacker to gain elevated privileges on the system, caused by a double free flaw in the idr_remove_all function in in lib/idr.c. By sending a specially-crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges or cause the system to crash.
CVSS Base Score: 7.8
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/162709&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

• IBM Netezza Host Management 5.4.9.0 - 5.4.24.0

Remediation/Fixes

To resolve the reported CVEs for Red Hat Enterprise Linux (RHEL) on following platforms :

PureData System for Analytics N3001
PureData System for Analytics N200x

Update to the following IBM Netezza Host Management release :

Customers who have enrolled for the IBM Netezza PDA OS Security upgrade program can avail the fixes detailed above through following monthly upgrade patch:

The Netezza Host Management software contains the latest RHEL updates for the operating systems certified for use on IBM Netezza/PureData System for Analytics appliances. IBM recommends upgrading to the latest Netezza Host Management version to ensure that your hosts have the latest fixes, security changes, and operating system updates. IBM Support can assist you with planning for the Netezza Host Management and operating system upgrades to your appliances.

For more details on IBM Netezza Host Management security patching:

• Red Hat Enterprise Linux (RHEL) Security Patching for IBM PureData System for Analytics appliances

Workarounds and Mitigations

None