UBUNTU-CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

UBUNTU-CVE-2020-25600

An issue was discovered in Xen through 4.14.x. Out of bounds event channels are available to 32-bit x86 domains. The so called 2-level event channel model imposes different limits on the number of usable event channels for 32-bit x86 domains vs 64-bit or Arm either bitness ones. 32-bit x86 domain...

DEBIAN-CVE-2020-25595

An issue was discovered in Xen through 4.14.x. The PCI passthrough code improperly uses register data. Code paths in Xen's MSI handling have been identified that act on unsanitized values read back from device hardware registers. While devices strictly compliant with PCI specifications shouldn't ...

Moderate: Red Hat Security Advisory: Red Hat Virtualization security, bug fix, and enhancement update

An update is now available for Red Hat Virtualization Engine 4.4. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE...

RHEL 8 : Red Hat Virtualization (RHSA-2020:3807)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3807 advisory. The org.ovirt.engine-root is a core component of oVirt. The following packages have been upgraded to a later upstream version:...

FreeBSD : FreeBSD -- bhyve privilege escalation via VMCS access (2c5b9cd7-f7e6-11ea-88f8-901b0ef719ab)

AMD and Intel CPUs support hardware virtualization using specialized data structures that control various aspects of guest operation. These are the Virtual Machine Control Structure VMCS on Intel CPUs, and the Virtual Machine Control Block VMCB on AMD CPUs. Insufficient access controls allow root...

FreeBSD-SA-20:29.bhyve_svm

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:29.bhyvesvm Security Advisory The FreeBSD Project Topic: bhyve SVM guest escape Category: core Module: bhyve Announced: 2020-09-15 Credits: Maxime Villard...

FreeBSD -- bhyve privilege escalation via VMCS access

Problem Description: AMD and Intel CPUs support hardware virtualization using specialized data structures that control various aspects of guest operation. These are the Virtual Machine Control Structure VMCS on Intel CPUs, and the Virtual Machine Control Block VMCB on AMD CPUs. Insufficient acces...

FreeBSD-SA-20:28.bhyve_vmcs

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:28.bhyvevmcs Security Advisory The FreeBSD Project Topic: bhyve privilege escalation via VMCS access Category: core Module: bhyve Announced: 2020-09-15...

FreeBSD -- bhyve SVM guest escape

Problem Description: A number of AMD virtualization instructions operate on host physical addresses, are not subject to nested page table translation, and guest use of these instructions was not trapped. Impact: From kernel mode a malicious guest can write to arbitrary host memory with some...

The vulnerability of Cisco Enterprise NFV Infrastructure Software (NFVIS) relates to incorrect path name restrictions for access-limited directories, allowing a perpetrator to re-record arbitrary files in the operating system of the vulnerable device.

The vulnerability of Cisco Enterprise NFV Infrastructure Software NFVIS is related to incorrect restrictions on the path name to the restricted directory. Exploiting this vulnerability could allow a malicious actor to re-record any files in the operating system of the vulnerable device remotely...

EulerOS Virtualization for ARM 64 3.0.2.0 : glibc (EulerOS-SA-2020-1956)

According to the versions of the glibc packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - An out-of-bounds write vulnerability was found in glibc when handling signal trampolines on PowerPC. The backtrace...

EulerOS Virtualization for ARM 64 3.0.2.0 : perl (EulerOS-SA-2020-1967)

According to the versions of the perl packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - Perl before 5.30.3 has an integer overflow related to mishandling of a 'PLregkindOPn == NOTHING' situation. A crafted...

EulerOS Virtualization for ARM 64 3.0.2.0 : nmap (EulerOS-SA-2020-1979)

According to the version of the nmap package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - Nmap through 7.70, when the -sV option is used, allows remote attackers to cause a denial of service stack consumption and...

EulerOS Virtualization for ARM 64 3.0.2.0 : vim (EulerOS-SA-2020-1957)

According to the version of the vim packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - A flaw was found in vim in the restricted mode, where all commands that make use of external shells are disabled. However, i...

EulerOS Virtualization for ARM 64 3.0.2.0 : python (EulerOS-SA-2020-1951)

According to the version of the python packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when...

EulerOS Virtualization for ARM 64 3.0.2.0 : python-ecdsa (EulerOS-SA-2020-1977)

According to the version of the python-ecdsa package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - A flaw was found in python-ecdsa, where it did not correctly verify whether signatures used DER encoding. Without th...

EulerOS Virtualization for ARM 64 3.0.2.0 : pcre (EulerOS-SA-2020-1950)

According to the version of the pcre packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - libpcre in PCRE before 8.44 allows an integer overflow via a large number after a ?C substring.CVE-2020-14155 Note that...

EulerOS Virtualization for ARM 64 3.0.2.0 : cups (EulerOS-SA-2020-1974)

According to the version of the cups package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - There is a buffer error vulnerability in Apple cups. The vulnerability is due to the improper verification of data boundarie...

EulerOS Virtualization for ARM 64 3.0.2.0 : grub2 (EulerOS-SA-2020-1965)

According to the version of the grub2 packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB...