Design/Logic Flaw

An issue was discovered in Xen through 4.13.x, allowing Intel guest OS users to gain privileges or cause a denial of service because of non-atomic modification of a live EPT PTE. When mapping guest EPT nested paging tables, Xen would in some circumstances use a series of non-atomic bitfield write...

insufficient cache write-back under VT-d

ISSUE DESCRIPTION When page tables are shared between IOMMU and CPU, changes to them require flushing of both TLBs. Furthermore, IOMMUs may be non-coherent, and hence prior to flushing IOMMU TLBs CPU cached also needs writing back to memory after changes were made. Such writing back of cached dat...

HPSBHF03673 rev. 4 - AMD® SMM Callout Privilege Escalation

Potential Security Impact Execution of Arbitrary Code Source: AMD Reported By: AMD VULNERABILITY SUMMARY A potential security vulnerability in AMD® software technology has been identified that, in the case of privileged physical or administrative access, an attacker could potentially manipulate...

AMD: Fixes For High-Severity SMM Callout Flaws Upcoming

Three high-severity vulnerabilities have been disclosed in AMD’s client and embedded processors that came out between 2016 and 2019. An attacker with physical or privileged access to certain AMD powered systems could exploit the flaws to execute arbitrary code or take control of the firmware. AMD...

PT-2020-13321

Name of the Vulnerable Software and Affected Versions AMD processors affected versions not specified Description The issue is related to improper handling of pointers in the System Management Mode SMM handling code, which may allow a privileged attacker with physical or administrative access to...

Monero: Misconfiguration in build environment allows DLL preloading attack

Summary: monero-wallet-gui.exe tries to dynamically load some dynamic link librariesDLL which are not present in the applications directory, so LoadLibraryA system-call will search other directories such as Windows root and %PATH% for them. An attacker can gain arbitrary code execution if he/she...

CentOS: Security Advisory for microcode_ctl (CESA-2020:2433)

The remote host is missing an update for the Copyright C 2020 Greenbone Networks GmbH 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-or-later This program is free software; you can...

microcode_ctl security update

CentOS Errata and Security Advisory CESA-2020:2433 An update for microcodectl is now available for Red Hat Enterprise Linux 6. 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...

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 6. 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...

New Noise-Resilient Attack On Intel and AMD CPUs Makes Flush-based Attacks Effective

Modern Intel and AMD processors are susceptible to a new form of side-channel attack that makes flush-based cache attacks resilient to system noise, newly published research shared with The Hacker News has revealed. The findings are from a paper "DABANGG: Time for Fearless Flush based Cache...

New Noise-Resilient Attack On Intel and AMD CPUs Makes Flush-based Attacks Effective

Modern Intel and AMD processors are susceptible to a new form of side-channel attack that makes flush-based cache attacks resilient to system noise, newly published research shared with The Hacker News has revealed. The findings are from a paper "DABANGG: Time for Fearless Flush based Cache...

AMD OverDrive has an unspecified vulnerability

AMD OverDrive is a tool from AMD USA that supports the management and configuration of CPU, GPU and RAM overclocking settings. A security vulnerability in the AODDriver2.sys file in AMD OverDrive, which stems from not properly filtering the MSR registers, can be exploited by an attacker to execut...

Unspecified Vulnerability in AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility

AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility is a hardware diagnostics and overclocking utility from AMD. A security vulnerability in the atillk64.sys file in AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility version 5.11.9.0, which originates from not properl...

CVE-2019-7247

An issue was discovered in AODDriver2.sys in AMD OverDrive. The vulnerable driver exposes a wrmsr instruction via IOCTL 0x81112ee0 and does not properly filter the Model Specific Register MSR. Allowing arbitrary MSR writes can lead to Ring-0 code execution and escalation of privileges...

CVE-2019-7246

An issue was discovered in atillk64.sys in AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility 5.11.9.0. The vulnerable driver exposes a wrmsr instruction and does not properly filter the Model Specific Register MSR. Allowing arbitrary MSR writes can lead to Ring-0 code execution an...

Privilege escalation

An issue was discovered in atillk64.sys in AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility 5.11.9.0. The vulnerable driver exposes a wrmsr instruction and does not properly filter the Model Specific Register MSR. Allowing arbitrary MSR writes can lead to Ring-0 code execution an...

Privilege escalation

An issue was discovered in AODDriver2.sys in AMD OverDrive. The vulnerable driver exposes a wrmsr instruction via IOCTL 0x81112ee0 and does not properly filter the Model Specific Register MSR. Allowing arbitrary MSR writes can lead to Ring-0 code execution and escalation of privileges...

CVE-2019-7246

An issue was discovered in atillk64.sys in AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility 5.11.9.0. The vulnerable driver exposes a wrmsr instruction and does not properly filter the Model Specific Register MSR. Allowing arbitrary MSR writes can lead to Ring-0 code execution an...

CVE-2019-7246

The CVE-2019-7246 entry concerns the AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility driver atillk64.sys (version 5.11.9.0). The vulnerability arises from improper filtering of Model Specific Registers (MSR) and exposure of a wrmsr instruction, allowing arbitrary MSR writes that...

CVE-2019-7247

CVE-2019-7247 affects AMD OverDrive’s AODDriver2.sys. The driver exposes wrmsr via IOCTL 0x81112ee0 and fails to properly filter MSRs, enabling arbitrary MSR writes that can lead to Ring-0 code execution and privilege escalation. Documents from Red Hat and other sources corroborate the same flaw....