[SECURITY] [DSA 4274-1] xen security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4274-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff August 16, 2018 https://www.debian.org/security/faq -...

Debian: Security Advisory (DSA-4274-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2018 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-only ifdescription...

Intel CPUs Undermined By Fresh Speculative Execution Flaws

UPDATE Three new speculative execution design flaws in Intel CPUs were disclosed today, this time impacting Intel’s Software Guard Extensions SGX technology, its OS and system management mode SMM and hypervisor software. The three vulnerabilities would allow attacks on Intel Core and Xeon...

x86: Incorrect MSR_DEBUGCTL handling lets guests enable BTS

ISSUE DESCRIPTION The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the core. As a result, it must...

Overcommitting pCPUs on individual XenServer VMs

Citrix recommends that you do not run a VM with more virtual CPUs vCPUs than the number physical CPUs pCPUs available on the XenServer host. The number of pCPUs available to XenServer can change even after the installation of VMs. For example, through actual hardware changes, changes in the BIOS...

Security Bulletin: IBM Security Identity Governance and Intelligence has released a fixpack in response to the vulnerabilities known as Spectre and Meltdown

Summary IBM has released the following fixpack for IBM Security Identity Governance and Intelligence in response to CVE-2017-5753 and CVE-2017-5754 Vulnerability Details CVEID: CVE-2017-5753 DESCRIPTION: Intel Haswell Xeon, AMD PRO and ARM Cortex A57 CPUs could allow a local authenticated attacke...

DEBIAN-CVE-2018-12891

An issue was discovered in Xen through 4.10.x. Certain PV MMU operations may take a long time to process. For that reason Xen explicitly checks for the need to preempt the current vCPU at certain points. A few rarely taken code paths did bypass such checks. By suitably enforcing the conditions...

Important: Red Hat Security Advisory: libvirt security and bug fix update

An update for libvirt 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...

openSUSE Security Update : the Linux Kernel (openSUSE-2018-656) (Spectre)

The openSUSE Leap 42.3 was updated to 4.4.138 to receive various security and bugfixes. The following security bugs were fixed : - CVE-2018-3639: Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes...

Debian DSA-4232-1 : xen - security update

This update provides mitigations for the 'lazy FPU' vulnerability affecting a range of Intel CPUs, which could result in leaking CPU register states belonging to another vCPU previously scheduled on the same CPU. For additional information please refer to...

OpenBSD Disables Intel Hyper-Threading to Prevent Spectre-Class Attacks

Security-oriented BSD operating system OpenBSD has decided to disable support for Intel's hyper-threading performance-boosting feature, citing security concerns over Spectre-style timing attacks. Introduced in 2002, Hyper-threading is Intel's implementation of Simultaneous Multi-Threading SMT tha...

[SECURITY] [DSA 4232-1] xen security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4232-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 20, 2018 https://www.debian.org/security/faq -...

Security Bulletin: IBM Information Server on Cloud is affected by the vulnerabilities known as Spectre and Meltdown.

Summary IBM Information Server on Cloud is affected by the vulnerabilities known as Spectre and Meltdown, which can enable CPU data cache timing to be abused to bypass conventional memory security restrictions to gain access to privileged memory that should be inaccessible. Vulnerability Details...

Microsoft Guidance for Lazy FP State Restore

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 June 13...

KLA11291 Microsoft Guidance for Lazy Floating Point State Restore

Speculative store bypass vulnerability in Microsoft Windows systems can be exploited to bypass security restrictions. 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...

KLA11891 Microsoft Advisory for Microsoft Products (ESU)

Microsoft released an advisory and security updates related to a newly-discovered class of hardware vulnerabilities known as Spectre and Meltdown. An additional vulnerability involving side channel speculative execution has been announced and assigned CVE-2018-3665. An attacker locally could caus...

U.S. Builds World's Fastest Supercomputer – Summit

China no longer owns the fastest supercomputer in the world; It is the United States now. Though China still has more supercomputers on the Top 500 list, the USA takes the crown of "world's fastest supercomputer" from China after IBM and the U.S. Department of Energy's Oak Ridge National Laborato...

openSUSE Security Update : glibc (openSUSE-2018-600)

This update for glibc fixes the following issues : This security issue was fixed : - Fixed an buffer overwrite issue in memcpy for Knights Landing CPUs boo1092877, CVE-2018-11237 %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were...

Security update for glibc (moderate)

This update for glibc fixes the following issues: This security issue was fixed: - Fixed an buffer overwrite issue in memcpy for Knights Landing CPUs boo1092877, CVE-2018-11237...

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...