Xen Project MSR_DEBUGCTL 'Branch Trace Store' DoS (XSA-269)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service vulnerability. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches we...

Ring 0 Army Knife: r0ak

r0ak is a Windows command-line utility that enables you to easily read, write, and execute kernel-mode code with some limitations from the command prompt, without requiring anything else other than Administrator privileges. Motivation The Windows kernel is a rich environment in which hundreds of...

SUSE-SU-2018:2482-1 Security update for xen

This update for xen fixes the following issues: This security issue was fixed: - CVE-2018-3646: Systems with microprocessors utilizing speculative execution and address translations may have allowed unauthorized disclosure of information residing in the L1 data cache to an attacker with local use...

RHEL 6 / 7 : rhev-hypervisor7 (RHSA-2018:2404)

The remote Redhat Enterprise Linux 6 / 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2018:2404 advisory. The rhev-hypervisor7 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualizati...

Design/Logic Flaw

An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG...

UBUNTU-CVE-2018-15468

An issue was discovered in Xen through 4.11.x. 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...

DEBIAN-CVE-2018-15469

An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG...

UBUNTU-CVE-2018-15469

An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG...

ALPINE-CVE-2018-15469

An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG...

DEBIAN-CVE-2018-15468

An issue was discovered in Xen through 4.11.x. 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...

Speculation Attack Against Intel's SGX

Another speculative-execution attack against Intel's SGX. At a high level, SGX is a new feature in modern Intel CPUs which allows computers to protect users' data even if the entire system falls under the attacker's control. While it was previously believed that SGX is resilient to speculative...

L1 Terminal Fault Side Channel Vulnerabilities - Lenovo Support US

No description provided...

PT-2018-3388 · Linux +4 · Linux Kernel +4

Name of the Vulnerable Software and Affected Versions: Xen versions prior to 4.11.x Linux kernel versions prior to 4.18.1 Description: The issue is related to the xenvif set hash mapping function in the Xen hypervisor, which is connected to an integer overflow when handling requests to the netbac...

MGASA-2018-0341 Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on the upstream 4.14.62 and fixes at least the following security issues: kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled...

MGASA-2018-0340 Updated kernel-tmb packages fix security vulnerabilities

This kernel-tmb update is based on the upstream 4.14.62 and fixes at least the following security issues: kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled...

Important: Red Hat Security Advisory: rhev-hypervisor7 security update

An update for rhev-hypervisor7 is now available for RHEV 3.X Hypervisor and Agents for Red Hat Enterprise Linux 6 and RHEV 3.X Hypervisor and Agents Extended Lifecycle Support for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. ...

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...

Use of v2 grant tables may cause crash on ARM

ISSUE DESCRIPTION ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG checks. IMPACT An unprivilege...

HPSBHF03590 rev. 2 - L1 Terminal Fault (L1TF)

Potential Security Impact Unauthorized exposure of privileged data from memory. Source: HP, HP Product Security Response Team PSRT, Intel Reported By: Intel VULNERABILITY SUMMARY A new speculative execution side channel variant has been discovered called L1 Terminal Fault L1TF. There are no repor...

VMSA-2018-0020:VMware vSphere, Workstation, and Fusion updates enable Hypervisor-Specific Mitigations for L1 Terminal Fault - VMM vulnerability.

VMSA-2018-0020 VMware vSphere, Workstation, and Fusion updates enable Hypervisor-Specific Mitigations for L1 Terminal Fault - VMM vulnerability. VMware Security Advisory VMware Security Advisory Advisory ID: VMSA-2018-0020 VMware Security Advisory Severity: Important VMware Security Advisory...