CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

Code injection

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2021-3308

CVE-2021-3308 affects the Xen hypervisor (notably Xen 4.12.3–4.12.4 and 4.13.1–4.14.x). An x86 HVM guest with PCI passthrough can reboot with MSI/MSI-X enabled to exhaust all IDT vectors, leaking MSI(-X) entries and causing a DoS for PCI devices across guests or the host. The issue is triggered b...

CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2020-4766

IBM MQ Internet Pass-Thru 2.1 and 9.2 could allow a remote user to cause a denial of service by sending malformed MQ data requests which would consume all available resources. IBM X-Force ID: 188093...

IRQ vector leak on x86

ISSUE DESCRIPTION An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors used by the MSI-X entries that the guest might had enabled, a...

IBM MQ Internet Pass-Thru 资源管理错误漏洞

IBM MQ Internet Pass-Thru is an American IBM product used to support the realization of messaging between remote sites on the Internet. The product is an extended functionality component of IBM MQ that acts as a protocol channel or proxy for establishing protocols during interactions, making it...

App Layering Recipe for NVIDIA GPU

Overview vSphere supports several ways to use NVIDIA graphics cards to provide GPU functionality to virtual machines. These include: Virtual Shared Graphics Acceleration vSGA Virtual Dedicated Graphics Acceleration vDGA Virtual Shared Pass-Through Graphics Acceleration vGPU These will be explaine...

Apache Airflow Webserver 安全漏洞

Apache Airflow is the United States Apache Apache Foundation's set of open source platform for creating, managing and monitoring workflow. The platform is scalable and dynamic monitoring and other characteristics. A security vulnerability exists in Apache Airflow Webserver versions prior to 1.10....

CVE-2020-29567

An issue was discovered in Xen 4.14.x. When moving IRQs between CPUs to distribute the load of IRQ handling, IRQ vectors are dynamically allocated and de-allocated on the relevant CPUs. De-allocation has to happen when certain constraints are met. If these conditions are not met when first checke...

CVE-2020-28086

pass through 1.7.3 has a possibility of using a password for an unintended resource. For exploitation to occur, the user must do a git pull, decrypt a password, and log into a remote service with the password. If an attacker controls the central Git server or one of the other members' machines, a...

CVE-2020-28086

The CVE-2020-28086 issue affects pass through 1.7.3, where a mismatch allows decrypting the wrong password from a Git-managed password store. Exploitation requires the attacker to control the central Git server (or other members’ machines) and at least one service in the password store, then rena...

Vulnerability fixed in Citrix Hypervisor

A vulnerability has been fixed in Citrix Hypervisor. The vulnerability allows a malicious party capable of running code with elevated privileges on a guest VM able to execute execute arbitrary code with elevated privileges on the host. This vulnerability can only be exploited if a host...

IPTInstaller 4.0.9 Unquoted Service Path

Exploit Title: IPTInstaller 4.0.9 - 'PassThru Service' Unquoted Service Path Exploit Author : SamAlucard Exploit Date: 2020-11-08 Vendor : HTC Version : IPTInstaller 4.0.9 Vendor Homepage : https://www.htc.com/latam/ Tested on OS: Windows 7 Pro Analyze PoC : ============== C:\Users\DSAZ230sc qc...

Session State Monitor Tool - XenApp/XenDesktop

Where to download ? Certain legacy Citrix tools are now available on request only. Please submit the request here - https://forms.gle/obA39PEz5qpDiSPq8 Once we verify your request, we will provide access to the download location. Description The Session State Monitor Utility actively monitors...

IPTInstaller 4.0.9 - 'PassThru Service' Unquoted Service Path

Exploit Title: IPTInstaller 4.0.9 - 'PassThru Service' Unquoted Service Path Exploit Author : SamAlucard Exploit Date: 2020-11-08 Vendor : HTC Version : IPTInstaller 4.0.9 Vendor Homepage : https://www.htc.com/latam/ Tested on OS: Windows 7 Pro Analyze PoC : ============== C:\Users\DSAZ230sc qc...

Detecting Microsoft 365 and Azure Active Directory Backdoors

Mandiant has seen an uptick in incidents involving Microsoft 365 M365 and Azure Active Directory Azure AD. Most of these incidents are the result of a phishing email coercing a user to enter their credentials used for accessing M365 into a phishing site. Other incidents have been a result of...

Vulnerabilities fixed in Xen

Xen developers have fixed vulnerabilities in the hypervisor. The vulnerability with reference CVE-2020-25604 makes it possible for a local malicious person who can migrate timers between vCPU-s to cause a denial-of-service. The vulnerability with attribute CVE-2020-25595 allows a local malicious...