The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state data structure which allows guest OS users to cause a denial of service (host OS crash or hang) by attempting to read the /dev/port file.

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Linux Linux kernel version at least v4.8 onwards, probably well before contains a Insufficient input validation vulnerability in bnx2x network card driver that can result in DoS: Network card firmware assertion takes card off-line. This attack appear to be exploitable via An attacker on a must pass a very large, specially crafted packet to the bnx2x card. This can be done from an untrusted guest VM..

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CVE-2020-26105

In cPanel before 88.0.3, insecure chkservd test credentials are used on a templated VM SEC-554...

CVE-2020-26103

In cPanel before 88.0.3, an insecure site password is used for Mailman on a templated VM SEC-551...

CVE-2020-26102

In cPanel before 88.0.3, an insecure auth policy API key is used by Dovecot on a templated VM SEC-550...

CVE-2020-26101

In cPanel before 88.0.3, insecure RNDC credentials are used for BIND on a templated VM SEC-549...

Denial Of Service (DoS)

xen is vulnerable to denial of service DoS. An issue was discovered in Xen through 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and...

VMware Workstation 15.x < 15.5.7 Multiple Vulnerabilities (VMSA-2020-0020)

The version of VMware Workstation installed on the remote host is 15.x. It is, therefore, affected by the following vulnerabilities: - Multiple out-of-bounds read vulnerabilities in Cortado ThinPrint components JPEG2000 parser, EMR STRETCHDIBITS parser, and EMF Parser. A malicious actor with norm...

ALPINE-CVE-2020-25598

An issue was discovered in Xen 4.14.x. There is a missing unlock in the XENMEMacquireresource error path. The RCU Read, Copy, Update mechanism is a synchronisation primitive. A buggy error path in the XENMEMacquireresource exits without releasing an RCU reference, which is conceptually similar to...

UBUNTU-CVE-2020-25596

An issue was discovered in Xen through 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and incorrectly delivers it twice to the guest...

Maze Ransomware Adopts Ragnar Locker Virtual-Machine Approach

The operators of the Maze ransomware have added a fresh trick to their bag of badness: Distributing ransomware payloads via virtual machines VM. It’s a “radical” approach, according to researchers, meant to help the ransomware get around endpoint defense. That’s according to researchers with Soph...

Facebook HHVM Data Forgery Issue Vulnerability

Facebook HHVM aka HipHop Virtual Machine is a virtual machine from Facebook that significantly improves the performance of loading dynamic pages in PHP. A data forgery issue vulnerability exists in Facebook HHVM versions prior to 3.9.5, 3.10.0 through 3.12.3, and 3.13.0 through 3.14.1, which stem...

CVE-2020-0306

In LLVM, there is a possible ineffective stack cookie placement due to stack frame double reservation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID:...

Windows Hyper-V VM Enumeration

This module will check if the target machine is a Hyper-V host and, if it is, will return a list of all of the VMs running on the host, as well as stats such as their state, version, CPU Usage, uptime, and status. Module Options msf use post/windows/gather/enumhypervvms msf postenumhypervvms show...

CVE-2020-25490

Lack of cryptographic signature verification in the Sqreen PHP agent daemon before 1.16.0 makes it easier for remote attackers to inject rules for execution inside the virtual machine...

CVE-2020-25490

Lack of cryptographic signature verification in the Sqreen PHP agent daemon before 1.16.0 makes it easier for remote attackers to inject rules for execution inside the virtual machine...

CVE-2020-3990

VMware Workstation 15.x and Horizon Client for Windows 5.x before 5.4.4 contain an information disclosure vulnerability due to an integer overflow issue in Cortado ThinPrint component. A malicious actor with normal access to a virtual machine may be able to exploit this issue to leak memory from...

CVE-2020-3990

VMware Workstation 15.x and Horizon Client for Windows 5.x before 5.4.4 contain an information disclosure vulnerability due to an integer overflow issue in Cortado ThinPrint component. A malicious actor with normal access to a virtual machine may be able to exploit this issue to leak memory from...

Integer overflow

VMware Workstation 15.x and Horizon Client for Windows 5.x before 5.4.4 contain an information disclosure vulnerability due to an integer overflow issue in Cortado ThinPrint component. A malicious actor with normal access to a virtual machine may be able to exploit this issue to leak memory from...

CVE-2020-3990

VMware Workstation (15.x) and Horizon Client for Windows (5.x prior to 5.4.4) are affected by CVE-2020-3990 due to an integer overflow in Cortado ThinPrint. A local attacker with access to a guest VM can exploit this to disclose memory from the TPView process, only if virtual printing is enabled ...