Apple macOS High Sierra AMD Out-of-Bounds Read Vulnerability

Apple iOS is an operating system for mobile devices developed by Apple, Inc. AMD is one of the components used in AMD products. A security vulnerability exists in the AMD component of Apple macOS High Sierra versions prior to 10.13.5. A local attacker can exploit this vulnerability with the help ...

MGASA-2018-0263 Updated kernel packages fix security vulnerabilities

This kernel update is based on the upstream 4.14.44 and fixes at least the following security issues: By mmaping a FUSE-backed file onto a process's memory containing command line arguments or environment strings, an attacker can cause utilities from psutils or procps such as ps, w or any other...

Updated kernel-tmb packages fix security vulnerabilities

This kernel-tmb update is based on the upstream 4.14.44 and fixes at least the following security issues: This update adds KPTI mitigation for Meltdown CVE-2017-5754 on 32bit x86. The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump bu...

SEVered Attack Extracts the Memory of AMD-Encrypted VMs

UPDATE Virtual machines that use AMD’s Secure Encrypted Virtualization SEV, a hardware-based encryption scheme, have been found to be vulnerable to the same malicious hypervisor attacks that can affect all processors. A successful attack can extract the full contents of their main memory in...

MGASA-2018-0260 Updated microcode packages fix security vulnerability

This update adds microcode fixes and mitigations for Spectre CVE-2017-5715 for the following: Intel Pentium Silver N/J5xxx, Celeron N/J4xxx Intel Xeon E5/E7 v4; Core i7-69xx/68xx Amd has also released their updated microcode for Fam15 and Fam17 cpus...

Updated microcode packages fix security vulnerability

This update adds microcode fixes and mitigations for Spectre CVE-2017-5715 for the following: Intel Pentium Silver N/J5xxx, Celeron N/J4xxx Intel Xeon E5/E7 v4; Core i7-69xx/68xx Amd has also released their updated microcode for Fam15 and Fam17 cpus...

Researchers Defeat AMD's SEV Virtual Machine Encryption

German security researchers claim to have found a new practical attack against virtual machines VMs protected using AMD's Secure Encrypted Virtualization SEV technology that could allow attackers to recover plaintext memory data from guest VMs. AMD's Secure Encrypted Virtualization SEV technology...

[SECURITY] [DSA 4210-1] xen security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4210-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff May 25, 2018 https://www.debian.org/security/faq -...

New Spectre (Variant 4) CPU Flaw Discovered—Intel, ARM, AMD Affected

Security researchers from Microsoft and Google have discovered a fourth variant of the data-leaking Meltdown-Spectre security flaws impacting modern CPUs in millions of computers, including those marketed by Apple. Variant 4 comes weeks after German computer magazine Heise reported about a set of...

New Spectre (Variant 4) CPU Flaw Discovered—Intel, ARM, AMD Affected

Security researchers from Microsoft and Google have discovered a fourth variant of the data-leaking Meltdown-Spectre security flaws impacting modern CPUs in millions of computers, including those marketed by Apple. Variant 4 comes weeks after German computer magazine Heise reported about a set of...

AMD / ARM / Intel - Speculative Execution Variant 4 Speculative Store Bypass

/ ======== Intro / Overview ======== After Michael Schwarz made some interesting observations, we started looking into variants other than the three already-known ones. I noticed that Intel's Optimization Manual says in section 2.4.4.5 "Memory Disambiguation": A load instruction micro-op may depe...

kernel security and bug fix update

2.6.32-696.30.1.OL6 - Update genkey bug 25599697 2.6.32-696.30.1 - x86 x86/kvm: fix CPUID7EDX word 18 mask Jan Stancek 1566893 1566899 CVE-2018-3639 2.6.32-696.29.1 - x86 x86/specctrl: Fix late microcode problem with AMD Waiman Long 1566893 1566899 CVE-2018-3639 - x86 x86/specctrl: Clean up entry...

AMD ARM Intel - Speculative Execution Variant 4 Speculative Store Bypass

AMD ARM Intel - Speculative Execution Variant 4 Speculative Store Bypass / ======== Intro / Overview ======== After Michael Schwarz made some interesting observations, we started looking into variants other than the three already-known ones. I noticed that Intel's Optimization Manual says in...

kernel security update

3.10.0-862.3.2.OL7 - Oracle Linux certificates Alexey Petrenko - Oracle Linux RHCK Module Signing Key was compiled into kernel [email protected] - Update x509.genkey bug 24817676 3.10.0-862.3.2 - x86 specctrl: Fix late microcode problem with AMD Waiman Long 1566904...

Speculative Store Bypass

ISSUE DESCRIPTION Contemporary high performance processors may use a technique commonly known as Memory Disambiguation, whereby speculative execution may proceed past unresolved stores. This opens a speculative sidechannel in which loads from an address which have had a recent store can observe a...

Microsoft Guidance for Speculative Store Bypass

Executive summary On January 3, 2018, Microsoft released an advisory and security updates related to a newly-discovered class of hardware vulnerabilities known as Spectre and Meltdown involving speculative execution side channels that affect AMD, ARM, and Intel CPUs to varying degrees. On May 21s...

Microsoft Guidance for Rogue System Register Read

Executive Summary On January 3, 2018, Microsoft released an advisory and security updates related to a newly discovered class of hardware vulnerabilities known as Spectre and Meltdown involving speculative execution side channels that affect AMD, ARM, and Intel CPUs to varying degrees. On May 21,...

KLA11253 Microsoft Advisory for Microsoft Windows

On January 3, 2018, Microsoft released an advisory and security updates related to a newly-discovered class of hardware vulnerabilities known as Spectre and Meltdown involving speculative execution side channels that affect AMD, ARM, and Intel CPUs to varying degrees. On May 21st, a new subclass ...

CPU hardware utilizing speculative execution may be vulnerable to cache side-channel attacks

Overview CPU hardware utilizing speculative execution may be vulnerable to cache timing side-channel analysis. Two vulnerabilities are identified, known as "Variant 3a" and "Variant 4". Description Speculative execution is a technique used by many modern processors to improve performance by...

What we’ve got here is failure to communicate: OS vendors misread CPU docs, create flaw

In a memorable scene from “Jumpin’ Jack Flash,” Whoopi Goldberg struggles to understand the lyrics of the eponymous song from the Rolling Stones, as she pleads: “Mick, Mick, Mick, speak English!” It appears that multiple operating system vendors had similar trouble interpreting Intel and AMD...