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RHEL 7 : kernel (RHSA-2019:1170) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)

high Nessus Plugin ID 125039

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

An update for kernel is now available for Red Hat Enterprise Linux 7.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* A flaw was found in the implementation of the 'fill buffer', a mechanism used by modern CPUs when a cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page fault, the execution will continue speculatively with incorrect data from the fill buffer while the data is fetched from higher level caches. This response time can be measured to infer data in the fill buffer. (CVE-2018-12130)

* Modern Intel microprocessors implement hardware-level micro-optimizations to improve the performance of writing data back to CPU caches. The write operation is split into STA (STore Address) and STD (STore Data) sub-operations. These sub-operations allow the processor to hand-off address generation logic into these sub-operations for optimized writes. Both of these sub-operations write to a shared distributed processor structure called the 'processor store buffer'. As a result, an unprivileged attacker could use this flaw to read private data resident within the CPU's processor store buffer. (CVE-2018-12126)

* Microprocessors use a 'load port' subcomponent to perform load operations from memory or IO. During a load operation, the load port receives data from the memory or IO subsystem and then provides the data to the CPU registers and operations in the CPU's pipelines.
Stale load operations results are stored in the 'load port' table until overwritten by newer operations. Certain load-port operations triggered by an attacker can be used to reveal data about previous stale requests leaking data back to the attacker via a timing side-channel. (CVE-2018-12127)

* Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.
(CVE-2019-11091)

* kernel: Buffer overflow in firewire driver via crafted incoming packets (CVE-2016-8633)

* kernel: crypto: privilege escalation in skcipher_recvmsg function (CVE-2017-13215)

* Kernel: ipsec: xfrm: use-after-free leading to potential privilege escalation (CVE-2017-16939)

* kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c (CVE-2018-1068)

* kernel: Use-after-free due to race condition in AF_PACKET implementation (CVE-2018-18559)

* kernel: media: use-after-free in [tuner-xc2028] media driver (CVE-2016-7913)

* kernel: Out-of-bounds access via an XFRM_MSG_MIGRATE xfrm Netlink message (CVE-2017-11600)

* kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190)

* kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow (CVE-2017-17558)

* Kernel: KVM: DoS via write flood to I/O port 0x80 (CVE-2017-1000407)

* Kernel: FPU state information leakage via lazy FPU restore (CVE-2018-3665)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es) :

* rwsem in inconsistent state leading system to hung (BZ#1690321)

* efi_bgrt_init fails to ioremap error during boot (BZ#1692284)

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/cve-2017-13215

https://access.redhat.com/security/cve/cve-2017-16939

https://access.redhat.com/security/cve/cve-2017-17558

https://access.redhat.com/security/cve/cve-2017-1000407

https://access.redhat.com/security/cve/cve-2018-1068

https://access.redhat.com/security/cve/cve-2018-3665

https://access.redhat.com/security/cve/cve-2018-12126

https://access.redhat.com/security/cve/cve-2018-12127

https://access.redhat.com/security/cve/cve-2018-12130

https://access.redhat.com/security/cve/cve-2018-18559

https://access.redhat.com/security/cve/cve-2019-11091

https://access.redhat.com/security/vulnerabilities/mds

https://access.redhat.com/errata/RHSA-2019:1170

https://access.redhat.com/security/cve/cve-2016-7913

https://access.redhat.com/security/cve/cve-2016-8633

https://access.redhat.com/security/cve/cve-2017-11600

https://access.redhat.com/security/cve/cve-2017-12190

Plugin Details

Severity: High

ID: 125039

File Name: redhat-RHSA-2019-1170.nasl

Version: 1.9

Type: local

Agent: unix

Published: 5/14/2019

Updated: 12/5/2022

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2016-7913

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2018-18559

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-s390x, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-x86_64, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-tools-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:perf-debuginfo, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:python-perf-debuginfo, cpe:/o:redhat:enterprise_linux:7.4

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/14/2019

Vulnerability Publication Date: 11/16/2016

Reference Information

CVE: CVE-2016-7913, CVE-2016-8633, CVE-2017-1000407, CVE-2017-11600, CVE-2017-12190, CVE-2017-13215, CVE-2017-16939, CVE-2017-17558, CVE-2018-1068, CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2018-18559, CVE-2018-3665, CVE-2019-11091

IAVA: 2019-A-0166

RHSA: 2019:1170