Xen Bad error path in GNTTABOP_map_grant DoS (XSA-316)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service vulnerability. Grant table operations are expected to return 0 for success, and a negative number for errors. Some misplaced brackets cause one error path to return 1...

Medium: kernel

Issue Overview: A stack buffer overflow issue was found in the getrawsocket routine of the Host kernel accelerator for virtio net vhost-net driver. It could occur while doing an ictolVHOSTNETSETBACKEND call, and retrieving socket name in a kernel stack variable via getrawsocket. A user able to...

The vulnerability of the libxl function in Xen hypervisors allows attackers to access confidential data, compromise its integrity, and cause service failures.

The vulnerability of the libxl function in Xen hypervisors is related to insufficient validation of input data. Exploiting this vulnerability allows attackers to access confidential data, compromise its integrity, and cause service failures...

Oracle VirtualBox xHCI Heap-based Buffer Overflow Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the xHCI...

Oracle VirtualBox vmsvga3dSetLightData Out-Of-Bounds Write Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the...

Oracle VirtualBox vmsvgaR3FifoUpdateCursor Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows local attackers to disclose sensitive information on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within...

Oracle VirtualBox SLiRP Networking Out-Of-Bounds Access Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Oracle VirtualBox. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of NAT. The issue results from the lack of proper validation of...

Oracle VirtualBox shader_glsl_get_register_name Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows local attackers to disclose sensitive information on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within...

Oracle VirtualBox VBoxVGA VBoxVHWASurfaceBase Use-After-Free Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the VBoxVGA...

Oracle VirtualBox xHCI Integer Overflow Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the xHCI...

Oracle VirtualBox Virtual USB Numeric Truncation Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the virtual...

Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2020-1396)

The remote host is missing an update for the Huawei EulerOS 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-only ifdescription...

Oracle VirtualBox xHCI Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows local attackers to disclose sensitive information on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within...

April 2020 Patch Tuesday – 113 Vulns, 19 Critical, Zero-Day Patches, SharePoint, Adobe ColdFusion

This month’s Microsoft Patch Tuesday addresses 113 vulnerabilities with 19 of them labeled as Critical. The 19 Critical vulnerabilities cover Adobe Font Manager Library 0-day, SharePoint, Hyper-V, Scripting Engines, Media Foundation, Microsoft Graphics, Windows Codecs, and Dynamics Business...

DEBIAN-CVE-2020-11739

An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service or possibly gain privileges because of missing memory barriers in read-write unlock paths. The read-write unlock paths don't contain a memory barrier. On Arm, this means a processor is allowed to...

DEBIAN-CVE-2020-11741

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users with active profiling to obtain sensitive information about other guests, cause a denial of service, or possibly gain privileges. For guests for which "active" profiling was enabled by the administrator, the xenopr...

CVE-2020-11742

An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of bad continuation handling in GNTTABOPcopy. Grant table operations are expected to return 0 for success, and a negative number for errors. The fix for CVE-2017-12135 introduced a path...

Citrix Hypervisor Multiple Security Updates

Description of Problem Several issues have been identified within Citrix Hypervisor, which could, if exploited, allow: privileged code in a PV guest VM to read a single uninitialized 4kB page of memory that may contain data left by a previous VM privileged code in a guest VM to cause the host to...

The vulnerability of Xen hypervisors arises from the simultaneous execution using a shared resource with incorrect synchronization. This allows attackers to gain access to confidential data, compromise its integrity, and cause service failures.

The vulnerability of Xen hypervisors is related to an error in the restart operations for volume change operations. Exploiting this vulnerability can allow a remote attacker to gain access to confidential data, compromise its integrity, and cause service failures...

The vulnerability of Xen hypervisors relates to the improper assignment of permissions for critical resources. This allows attackers to gain access to confidential data, compromise its integrity, and cause service failures.

The vulnerability of Xen hypervisors is related to the occurrence of exceptions that are handled without modifying the processor’s level. Some interrupts are inevitably included when an exception is generated. Exploiting this vulnerability can allow a remote attacker to access confidential data,...