x86: populate-on-demand balloon size inaccuracy can crash guests

ISSUE DESCRIPTION The design of the memory populate-on-demand PoD system requires that a guest's memory ballooning driver reach its memory reduction target. The target is not entirely well-defined in terms of the information visible to the appropriate parts of the system, so some unknown set of...

arm: Race between domain destruction and memory allocation decrease

ISSUE DESCRIPTION While freeing the memory associated with a domain during domain destruction Xen could race with a toolstack domain reducing the amount of memory associated with that same domain via the XENMEMdecreasereservation. In the case where this race is hit the host will crash. The race i...

x86: some pmu and profiling hypercalls log without rate limiting

ISSUE DESCRIPTION HYPERCALLxenoprofop and HYPERVISORxenpmuop log some errors and attempts at invalid operations. These log messages are not rate-limited, even though they can be triggered by guests. IMPACT A malicious guest could cause repeated logging to the hypervisor console, leading to a Deni...

x86: Uncontrolled creation of large page mappings by PV guests

ISSUE DESCRIPTION The code to validate level 2 page table entries is bypassed when certain conditions are satisfied. This means that a PV guest can create writeable mappings using super page mappings. Such writeable mappings can violate Xen intended invariants for pages which Xen is supposed to...

Android libstagefright - Integer Overflow Remote Code Execution

Exploit for Android platform in category remote exploits !/usr/bin/python2 import cherrypy import os import pwnlib.asm as asm import pwnlib.elf as elf import sys import struct with open'shellcode.bin', 'rb' as tmp: shellcode = tmp.read while lenshellcode % 4 != 0: shellcode += '\x00' heap groomin...

Google Android - libstagefright Integer Overflow Remote Code Execution

Google Android - libstagefright Integer Overflow Remote Code Execution !/usr/bin/python2 import cherrypy import os import pwnlib.asm as asm import pwnlib.elf as elf import sys import struct with open'shellcode.bin', 'rb' as tmp: shellcode = tmp.read while lenshellcode % 4 != 0: shellcode += '\x00...

Android Shellcode Telnetd with Parameters

/ Title: Android/ARM - telnetd with three parameters and an environment variable Date: 2015-07-31 Tested on: Android Emulator and Samsung Note 10.1 Android version 4.1.2 Author: Steven Padilla - email: email protected Organization: Tresys LLC Vendor HomePage: www.tresys.com Version: 1.0 Android A...

Android Shellcode Telnetd with Parameters

Android Shellcode Telnetd with Parameters. Shellcode exploit for android platform / Title: Android/ARM - telnetd with three parameters and an environment variable Date: 2015-07-31 Tested on: Android Emulator and Samsung Note 10.1 Android version 4.1.2 Author: Steven Padilla - email:...

DEBIAN-CVE-2015-6654

The xenmemaddtophysmapone function in arch/arm/mm.c in Xen 4.5.x, 4.4.x, and earlier does not limit the number of printk console messages when reporting a failure to retrieve a reference on a foreign page, which allows remote domains to cause a denial of service by leveraging permissions to map t...

Denial of service

The xenmemaddtophysmapone function in arch/arm/mm.c in Xen 4.5.x, 4.4.x, and earlier does not limit the number of printk console messages when reporting a failure to retrieve a reference on a foreign page, which allows remote domains to cause a denial of service by leveraging permissions to map t...

UBUNTU-CVE-2015-6654

The xenmemaddtophysmapone function in arch/arm/mm.c in Xen 4.5.x, 4.4.x, and earlier does not limit the number of printk console messages when reporting a failure to retrieve a reference on a foreign page, which allows remote domains to cause a denial of service by leveraging permissions to map t...

Debian Security Advisory DSA 3348-1 (qemu - security update)

Several vulnerabilities were discovered in qemu, a fast processor emulator. CVE-2015-3214 Matt Tait of Google OpenVAS Vulnerability Test $Id: deb3348.nasl 6609 2017-07-07 12:05:59Z cfischer $ Auto-generated from advisory DSA 3348-1 using nvtgen 1.0 Script version: 1.0 Author: Greenbone Networks...

printk is not rate-limited in xenmem_add_to_physmap_one

ISSUE DESCRIPTION XENMAPSPACEgmfnforeign dumps the p2m, on ARM, when it fails to get a reference on the foreign page. However, dumpp2mlookup does not use rate-limited printk. A malicious infrastructure domain, which is allowed to map memory of a foreign guest, would be able to flood the Xen...

RaspBSD – FreeBSD distribution for Raspberry Pi

Raspberry Pi is gaining new heights by rapidly maturing as; after Microsoft made Windows 10 IoT core supporting the Raspberry Pi 2, now a new version FreeBSD operating system is also deployable on Raspberry Pi devices, called RaspBSD. FreeBSD Berkeley Software Distribution is an open source...

PT-2016-4070 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 4.1 Description: The issue allows local users to gain privileges or cause a denial of service due to invalid pointer dereference. This occurs through vectors involving events that are mishandled during a span of...

Kali Linux 2.0 - The Best Penetration Testing Distribution

So, what’s new in Kali 2.0? There’s a new 4.0 kernel, now based on Debian Jessie, improved hardware and wireless driver coverage, support for a variety of Desktop Environments gnome, kde, xfce, mate, e17, lxde, i3wm, updated desktop environment and tools – and the list goes on. Kali Linux is Now ...

Kali Linux 2.0 Released — Download Most Powerful Penetration Testing Platform

Offensive Security, the creators of Swiss army knife for Security researchers, Penetration testers and Hackers have finally released the much awaited and most powerful version of Kali Linux 2.0. Kali Linux 2.0 Codename ‘Kali Sana’, an open-source penetration testing platform brings hundreds of...

mbedTLS/PolarSSL -- multiple vulnerabilities

ARM Limited reports: In order to strengthen the minimum requirements for connections and to protect against the Logjam attack, the minimum size of Diffie-Hellman parameters accepted by the client has been increased to 1024 bits. In addition the default size for the Diffie-Hellman parameters on th...

Use after free in QEMU/Xen block unplug protocol

ISSUE DESCRIPTION When unplugging an emulated block device the device was not fully unplugged, meaning a second unplug attempt would attempt to unplug the device a second time using a previously freed pointer. IMPACT An HVM guest which has access to an emulated IDE disk device may be able to...

Xen Patches VM Escape Flaw

The Xen Project has patched a serious vulnerability that could allow an attacker in a guest virtual machine to escape and gain the ability to run arbitrary code on the host machine. The vulnerability is in the QEMU open source machine emulator that ships as part of the Xen hypervisor. The problem...