The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel packages installed that are affected by multiple vulnerabilities:

  - 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 CPUs 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)

  - 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)

  - 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)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:2553 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    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 CPUs 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)

    * QEMU: device_tree: heap buffer overflow while loading device tree blob (CVE-2018-20815)

    * QEMU: rtl8139: integer overflow leads to buffer overflow (CVE-2018-17958)

    * QEMU: net: ignore packets with large size (CVE-2018-17963)

    * QEMU: scsi-generic: possible OOB access while handling inquiry request (CVE-2019-6501)

    * QEMU: slirp: information leakage in tcp_emu() due to uninitialized stack variables (CVE-2019-9824)

    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.

    Additional Changes:

    This update also fixes several bugs and adds various enhancements. Documentation for these changes is     available from the Release Notes document linked to in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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)

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)

The virConnectGetDomainCapabilities() libvirt API accepts an 'emulatorbin' argument to specify the program providing emulation for a domain. Since v1.2.19, libvirt will execute that program to probe the domain's capabilities. Read-only clients could specify an arbitrary path for this argument, causing libvirtd to execute a crafted executable with its own privileges. (CVE-2019-10167)

It was discovered that libvirtd would permit readonly clients to use the virDomainManagedSaveDefineXML() API, which would permit them to modify managed save state files. If a managed save had already been created by a privileged user, a local attacker could modify this file such that libvirtd would execute an arbitrary program when the domain was resumed. (CVE-2019-10166)

A vulnerability was found in libvirt >= 4.1.0 in the virtlockd-admin.socket and virtlogd-admin.socket systemd units. A missing SocketMode configuration parameter allows any user on the host to connect using virtlockd-admin-sock or virtlogd-admin-sock and perform administrative tasks against the virtlockd and virtlogd daemons.(CVE-2019-10132)

The virConnectBaselineHypervisorCPU() and virConnectCompareHypervisorCPU() libvirt APIs accept an 'emulator' argument to specify the program providing emulation for a domain.
Since v1.2.19, libvirt will execute that program to probe the domain's capabilities. Read-only clients could specify an arbitrary path for this argument, causing libvirtd to execute a crafted executable with its own privileges. (CVE-2019-10168)

It was discovered that libvirtd would permit read-only clients to use the virDomainSaveImageGetXMLDesc() API, specifying an arbitrary path which would be accessed with the permissions of the libvirtd process.
An attacker with access to the libvirtd socket could use this to probe the existence of arbitrary files, cause denial of service or cause libvirtd to execute arbitrary programs. (CVE-2019-10161)

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 CPUs 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)

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)

The remote host is running a version of RancherOS prior to v1.5.2, hences is exposed to an Information Disclosure Vulnerability. 

Microarchitectural Data Sampling (MDS) is a family of side channel attacks on internal buffers in Intel CPUs.
(CVE-2018-12126, CVE-2018-12130, CVE-2018-12127, CVE-2019-11091)

An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.

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.

Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM.

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 aEUR~load portaEURtm 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 CPUaEURtms 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)

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.

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4640 advisory.

    - x86: Document CVE-2018-12126 CVE-2018-12130 CVE-2018-12127 CVE-2019-11091 as       fixed (Mark Kanda)  [Orabug: 29744956]  {CVE-2018-12126} {CVE-2018-12127}       {CVE-2018-12130} {CVE-2019-11091}
    - Document CVE-2019-8934 and CVE-2019-5008 as fixed (Mark Kanda)  [Orabug: 29715605]  {CVE-2019-5008}     {CVE-2019-8934}
    - device_tree.c: Don't use load_image() (Peter Maydell)  [Orabug: 29715527]  {CVE-2018-20815}
    - slirp: check sscanf result when emulating ident (William Bowling)  [Orabug: 29715525]  {CVE-2019-9824}
    - i2c-ddc: fix oob read (Gerd Hoffmann)  [Orabug: 29715520]  {CVE-2019-3812}
    - scsi-generic: avoid possible out-of-bounds access to r->buf (Paolo Bonzini)  [Orabug: 29259700]     {CVE-2019-6501}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4630 advisory.

    - x86: Document CVE-2018-12126 CVE-2018-12130 CVE-2018-12127 CVE-2019-11091 as       fixed (Mark Kanda)  [Orabug: 29744956]  {CVE-2018-12126} {CVE-2018-12127}       {CVE-2018-12130} {CVE-2019-11091}
    - Document CVE-2019-8934 and CVE-2019-5008 as fixed (Mark Kanda)  [Orabug: 29715605]  {CVE-2019-5008}     {CVE-2019-8934}
    - device_tree.c: Don't use load_image() (Peter Maydell)  [Orabug: 29715527]  {CVE-2018-20815}
    - slirp: check sscanf result when emulating ident (William Bowling)  [Orabug: 29715525]  {CVE-2019-9824}
    - i2c-ddc: fix oob read (Gerd Hoffmann)  [Orabug: 29715520]  {CVE-2019-3812}
    - scsi-generic: avoid possible out-of-bounds access to r->buf (Paolo Bonzini)  [Orabug: 29259700]     {CVE-2019-6501}
    - slirp: check data length while emulating ident function (Prasad J Pandit)  [Orabug: 29715755]     {CVE-2019-6778}
    - usb-mtp: use O_NOFOLLOW and O_CLOEXEC. (Gerd Hoffmann)  [Orabug: 29216656]  {CVE-2018-16872}
    - pvrdma: add uar_read routine (Prasad J Pandit)  [Orabug: 29216658]  {CVE-2018-20191}
    - pvrdma: release ring object in case of an error (Prasad J Pandit)  [Orabug: 29216659]  {CVE-2018-20126}
    - pvrdma: check number of pages when creating rings (Prasad J Pandit)  [Orabug: 29216666]     {CVE-2018-20125}
    - pvrdma: check return value from pvrdma_idx_ring_has_ routines (Prasad J Pandit)  [Orabug: 29216672]     {CVE-2018-20216}
    - rdma: remove unused VENDOR_ERR_NO_SGE macro (Prasad J Pandit)  [Orabug: 29216678]  {CVE-2018-20124}
    - rdma: check num_sge does not exceed MAX_SGE (Prasad J Pandit)  [Orabug: 29216678]  {CVE-2018-20124}
    - Document various CVEs as fixed (Mark Kanda)  [Orabug: 29212424]  {CVE-2017-10806} {CVE-2017-11334}     {CVE-2017-12809} {CVE-2017-13672} {CVE-2017-13673} {CVE-2017-13711} {CVE-2017-14167} {CVE-2017-15038}     {CVE-2017-15119} {CVE-2017-15124} {CVE-2017-15268} {CVE-2017-15289} {CVE-2017-16845} {CVE-2017-17381}     {CVE-2017-18030} {CVE-2017-18043} {CVE-2017-2630} {CVE-2017-2633} {CVE-2017-5715} {CVE-2017-5753}     {CVE-2017-5754} {CVE-2017-7471} {CVE-2017-7493} {CVE-2017-8112} {CVE-2017-8309} {CVE-2017-8379}     {CVE-2017-8380} {CVE-2017-9503} {CVE-2018-10839} {CVE-2018-11806} {CVE-2018-12617} {CVE-2018-15746}     {CVE-2018-16847} {CVE-2018-16867} {CVE-2018-17958} {CVE-2018-17962} {CVE-2018-17963} {CVE-2018-18849}     {CVE-2018-19364} {CVE-2018-19489} {CVE-2018-3639} {CVE-2018-5683} {CVE-2018-7550} {CVE-2018-7858}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1199 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    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 CPUs 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)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2019-3882:06 advisory.

    [Security Fix]
    - Microarchitectural Store Buffer Data Sampling (MSBDS):
       Store Buffer

      (CVE-2018-12126)
    - Microarchitectural Load Port Data Sampling (MLDPDS):
       Load Port

      (CVE-2018-12127)
    - Microarchitectural Fill Buffer Data Sampling (MFBDS):
       Fill Buffer

      (CVE-2018-12130)
    - Microarchitectural Data Sampling Uncacheable Memory (MDSUM):
       Uncacheable Memory

      (CVE-2019-11091)     CVEJVNhttp://jvndb.jvn.jp/

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
127287	NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0078)	Nessus	NewStart CGSL Local Security Checks	2019/8/12	2025/2/24	medium
128205	RHEL 7 : qemu-kvm-rhev (RHSA-2019:2553)	Nessus	Red Hat Local Security Checks	2019/8/27	2024/11/7	critical
128288	Amazon Linux 2 : libvirt (ALAS-2019-1274) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)	Nessus	Amazon Linux Local Security Checks	2019/8/28	2024/5/27	high
132256	RancherOS < 1.5.2 Intel Microarchitectural Data Sampling Local Information Disclosure	Nessus	Misc.	2019/12/19	2025/2/21	medium
144533	Virtuozzo 6 : qemu-guest-agent / qemu-img / qemu-kvm / etc (VZLSA-2019-1181)	Nessus	Virtuozzo Local Security Checks	2020/12/22	2025/2/20	medium
180647	Oracle Linux 7 : qemu (ELSA-2019-4640)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/11/1	critical
180724	Oracle Linux 7 : qemu (ELSA-2019-4630)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2025/2/19	medium
193984	RHEL 7 : qemu-kvm-rhev (RHSA-2019:1199)	Nessus	Red Hat Local Security Checks	2024/4/27	2025/2/19	medium
288901	MiracleLinux 7 : libvirt-4.5.0-10.el7.9 (AXSA:2019-3882:06)	Nessus	Miracle Linux Local Security Checks	2026/1/16	2026/1/17	medium

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