UBUNTU-CVE-2020-29571

An issue was discovered in Xen through 4.14.x. A bounds check common to most operation time functions specific to FIFO event channels depends on the CPU observing consistent state. While the producer side uses appropriately ordered writes, the consumer side isn't protected against re-ordered read...

Schneider Electric Modicon M340 Code Issue Vulnerability

The Schneider Electric Modicon M340 is a mid-range PLC Programmable Logic Controller for industrial processes and infrastructure from Schneider Electric France. A security vulnerability exists in the Modicon that could be exploited by an attacker to cause a denial of service on the device. The...

PlayStation: SMAP bypass

SMAP is a security feature on x86 CPUs, that forbids ring0 from reading/writing to ring3 pages, making it harder to exploit entire classes of vulnerabilities. There is a vulnerability in FreeBSD 12 that allows SMAP to be bypassed by userland. There is a very high probability that it affects the P...

Moderate: Red Hat Security Advisory: microcode_ctl security, bug fix, and enhancement update

An update for microcodectl is now available for Red at Enterprise Linux 7.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...

Moderate: Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update

An update for microcodectl is now available for Red Hat Enterprise Linux 7.4 Advances Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...

microcode_ctl security, bug fix, and enhancement update

2:2.1-73.2.0.1 - for Intel, do not trigger load if on-disk microcode is not an update Orabug: 30634727 - set earlymicrocode='no' in virtualized guests to avoid early load bugs Orabug: 30618736 - ensure late loading fixes are present on 4.1.12- and 4.14.35- - enable early and late load for 5.4.17-...

CVE-2020-12912

A flaw was found in the Linux kernel’s implementation of RAPL for AMD CPUs. This flaw allows a user with a local account to use the RAPL interface to gain information on the CPU execution state, resulting in an information leak of sensitive data across security boundaries. The highest threat from...

CVE-2020-15783

A vulnerability has been identified in SIMATIC S7-300 CPU family incl. related ET200 CPUs and SIPLUS variants All versions, SIMATIC TDC CPU555 All versions, SINUMERIK 840D sl All versions. Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port...

Moderate: Red Hat Security Advisory: microcode_ctl security, bug fix, and enhancement update

An update for microcodectl is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability fr...

Citrix Hypervisor Security Update

Description of Problem Two issues have been identified in Citrix Hypervisor that may, if exploited, allow privileged code in an HVM guest VM to compromise or crash the host. These issues only apply in specific configurations; furthermore, Citrix believes that there would be significant difficulty...

Security Bulletin: IBM Security QRadar Packet Capture is vulnerable to Intel Microarchitectural Data Sampling (MDS) Vulnerabilites (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091)

Summary A potential security vulnerability in CPUs may allow information disclosure. Vulnerability Details CVEID: CVE-2018-12126 Description: Microarchitectural Store Buffer Data Sampling MSBDS: Store buffers on some microprocessors utilizing speculative execution may allow an authenticated user ...

x86: Race condition in Xen mapping code

ISSUE DESCRIPTION The Xen code handling the updating of the hypervisor's own pagetables tries to use 2MiB and 1GiB superpages as much as possible to maximize TLB efficiency. Some of the operations for checking and coalescing superpages take non-negligible amount of time; to avoid potential lock...

Buffer overflow

Buffer overflow in BIOS firmware for 8th, 9th, 10th Generation IntelR CoreTM, IntelR CeleronR Processor 4000 & 5000 Series Processors may allow an authenticated user to potentially enable elevation of privilege or denial of service via adjacent access...

DEBIAN-CVE-2020-25604

An issue was discovered in Xen through 4.14.x. There is a race condition when migrating timers between x86 HVM vCPUs. When migrating timers of x86 HVM guests between its vCPUs, the locking model used allows for a second vCPU of the same guest also operating on the timers to release a lock that it...

Design/Logic Flaw

An issue was discovered in Xen through 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and incorrectly delivers it twice to the guest...

CVE-2020-25596

An issue was discovered in Xen through 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and incorrectly delivers it twice to the guest...

FreeBSD -- bhyve privilege escalation via VMCS access

Problem Description: AMD and Intel CPUs support hardware virtualization using specialized data structures that control various aspects of guest operation. These are the Virtual Machine Control Structure VMCS on Intel CPUs, and the Virtual Machine Control Block VMCB on AMD CPUs. Insufficient acces...

Security Bulletin: Vulnerability in side channel in Intel CPUs affect IBM Cloud Pak System (CVE-2019-11135)

Summary IBM Cloud Pak System when using Intel CPUs could allow a local authenticated attacker to obtain sensitive information. OS image for RedHat Enterprise Linux for Cloud Pak System is shipped as component for IBM Cloud Pak System. OS image for RedHat Enterprise Linux addressed vulnerability...

Missing Linux Kernel mitigations for 'TAA - TSX Asynchronous Abort' hardware vulnerabilities (INTEL-SA-00270)

The remote host is missing one or more known mitigations on Linux Kernel side for the referenced SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-onl...

Intel, ARM, IBM, AMD Processors Vulnerable to New Side-Channel Attacks

It turns out that the root cause behind several previously disclosed speculative execution attacks against modern processors, such as Meltdown and Foreshadow, was misattributed to 'prefetching effect,' resulting in hardware vendors releasing incomplete mitigations and countermeasures. Sharing its...