CVE-2019-18425

An issue was discovered in Xen through 4.12.x allowing 32-bit PV guest OS users to gain guest OS privileges by installing and using descriptors. There is missing descriptor table limit checking in x86 PV emulation. When emulating certain PV guest operations, descriptor table accesses are performe...

DEBIAN-CVE-2019-18425

An issue was discovered in Xen through 4.12.x allowing 32-bit PV guest OS users to gain guest OS privileges by installing and using descriptors. There is missing descriptor table limit checking in x86 PV emulation. When emulating certain PV guest operations, descriptor table accesses are performe...

ALPINE-CVE-2019-18425

An issue was discovered in Xen through 4.12.x allowing 32-bit PV guest OS users to gain guest OS privileges by installing and using descriptors. There is missing descriptor table limit checking in x86 PV emulation. When emulating certain PV guest operations, descriptor table accesses are performe...

UBUNTU-CVE-2019-18425

An issue was discovered in Xen through 4.12.x allowing 32-bit PV guest OS users to gain guest OS privileges by installing and using descriptors. There is missing descriptor table limit checking in x86 PV emulation. When emulating certain PV guest operations, descriptor table accesses are performe...

CVE-2019-18425

An issue was discovered in Xen through 4.12.x allowing 32-bit PV guest OS users to gain guest OS privileges by installing and using descriptors. There is missing descriptor table limit checking in x86 PV emulation. When emulating certain PV guest operations, descriptor table accesses are performe...

CVE-2019-18425

An issue was discovered in Xen through 4.12.x allowing 32-bit PV guest OS users to gain guest OS privileges by installing and using descriptors. There is missing descriptor table limit checking in x86 PV emulation. When emulating certain PV guest operations, descriptor table accesses are performe...

CVE-2019-18425

An issue was discovered in Xen through 4.12.x allowing 32-bit PV guest OS users to gain guest OS privileges by installing and using descriptors. There is missing descriptor table limit checking in x86 PV emulation. When emulating certain PV guest operations, descriptor table accesses are performe...

CVE-2019-18425

CVE-2019-18425 affects Xen across 3.2+ and enables privilege escalation in 32-bit PV guests due to missing descriptor table limit checks in x86 PV emulation. The vulnerability is limited to 32-bit PV guest user mode; HVM/PVH/64-bit PV guests and ARM are not affected. Exploitation would let a gues...

missing descriptor table limit checking in x86 PV emulation

ISSUE DESCRIPTION When emulating certain PV guest operations, descriptor table accesses are performed by the emulating code. Such accesses should respect the guest specified limits, unless otherwise guaranteed to fail in such a case. Without this, emulation of 32-bit guest user mode calls through...

PT-2019-4839 · Xen +1 · Xen +1

Name of the Vulnerable Software and Affected Versions: Xen versions 3.2 through 4.12.x Description: The issue is related to an error in the x86 PV emulation of the Xen hypervisor, specifically a missing check for the descriptor table limit. This could allow a remote attacker to access confidentia...

CVE-2018-10853

A flaw was found in the way Linux kernel KVM hypervisor emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilegeCPL level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside...

CVE-2018-17958

An integer overflow issue was found in the RTL8139 NIC emulation in QEMU. It could occur while receiving packets over the network if the size value is greater than INTMAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process,...

box.js - A Tool For Studying JavaScript Malware

A utility to analyze malicious JavaScript. Installation Simply install box-js from npm: npm install box-js --global Usage Looking to use box-js with Cuckoo? Use cuckoo-package.py as an analysis package. Let's say you have a sample called sample.js: to analyze it, simply run box-js sample.js Chanc...

The story of Adobe Reader symbols

Posted by Mateusz Jurczyk, Project Zero Modern day security analysis of client applications is often hindered by the inaccessibility of their source code and other aids such as debug symbols. As a result, it is necessary to perform completely black-box reverse engineering of the software, in orde...

Flare-Emu - Powered by IDA Pro and the Unicorn emulation framework that provides scriptable emulation features for the x86, x86_64, ARM, and ARM64 architectures to reverse engineers

flare-emu marries IDA Pro’s binary analysis capabilities with Unicorn’s emulation framework to provide the user with an easy to use and flexible interface for scripting emulation tasks. It is designed to handle all the housekeeping of setting up a flexible and robust emulator for its supported...

Firmware Analysis Toolkit - Toolkit To Emulate Firmware And Analyse It For Security Vulnerabilities

FAT is a toolkit built in order to help security researchers analyze and identify vulnerabilities in IoT and embedded device firmware. This is built in order to use for the "Offensive IoT Exploitation " training conducted by Attify. Download AttifyOS Note: As of now, it is simply a script to...

UBUNTU-CVE-2019-12068

In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 fixed, when executing script in lsiexecutescript, the LSI scsi adapter emulator advances 's-dsp' index to read next opcode. This can lead to an infinite loop if the nex...

QEMU: slirp: heap buffer overflow in tcp_emu()

A heap buffer overflow issue was found in the SLiRP networking implementation of the QEMU emulator. It occurs in tcpemu routine while emulating the Identification protocol and copying message data to a socket buffer. A user or process could use this flaw to crash the QEMU process on the host...

QEMU: pcnet: integer overflow leads to buffer overflow

An integer overflow issue was found in the AMD PC-Net II NIC emulation in QEMU. It could occur while receiving packets, if the size value was greater than INTMAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process resulting i...

CVE-2019-5609

The CVE-2019-5609 issue affects FreeBSD with the bhyve e1000 device: when TCP segmentation offload is requested for a transmitted packet, the guest can influence the size of an on‑stack buffer, enabling potential memory corruption in the bhyve host process. Affected versions include FreeBSD 12.0-...