xen-kernel -- information leak in legacy x86 FPU/XMM initialization

The Xen Project reports: When XSAVE/XRSTOR are not in use by Xen to manage guest extended register state, the initial values in the FPU stack and XMM registers seen by the guest upon first use are those left there by the previous user of those registers. A malicious domain may be able to leverage...

SuperScan 4.1 - Windows Enumeration Hostname/IP/URL Field SEH Overflow Exploit

Exploit for windows platform in category dos / poc !/usr/bin/env python -- coding: utf-8 -- Exploit Title : SuperScan 4.1 Windows Enumeration Hostname/IP/URL Field SEH Overflow Crash PoC Discovery by : Luis Martínez Email : email protected Discovery Date : 18/11/2015 Vendor Homepage :...

kernel: kvm: insufficient sysenter emulation when invoked from 16-bit code

It was found that the Linux kernel KVM subsystem's sysenter instruction emulation was not sufficient. An unprivileged guest user could use this flaw to escalate their privileges by tricking the hypervisor to emulate a SYSENTER instruction in 16-bit mode, if the guest OS did not initialize the...

SuperScan 4.1 - Windows Enumeration HostnameIPURL Field Overflow (SEH)

SuperScan 4.1 - Windows Enumeration HostnameIPURL Field Overflow SEH !/usr/bin/env python -- coding: utf-8 -- Exploit Title : SuperScan 4.1 Windows Enumeration Hostname/IP/URL Field SEH Overflow Crash PoC Discovery by : Luis Martínez Email : [email protected] Discovery Date : 18/11/2015...

The vulnerability of the Mac OS X operating system, which allows a hacker to trigger a service failure

The vulnerability of the EFI component in the Mac OS X operating system is related to errors in specifying the range of protected registers. Exploiting this vulnerability can allow a malicious actor to trigger a service failure through a specially crafted application...

Linux Kernel (x86) - Memory Sinkhole Privilege Escalation

Linux Kernel x86 - Memory Sinkhole Privilege Escalation ; memory sinkhole proof of concept ; hijack ring -2 execution through the apic overlay attack. ; deployed in ring 0 ; the SMBASE register of the core under attack TARGETSMBASE equ 0x1f5ef800 ; the location of the attack GDT. ; this is...

Ubuntu: Security Advisory (USN-2613-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2015 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-2614-1: Linux kernel vulnerabilities

Vincent Tondellier discovered an integer overflow in the Linux kernel's netfilter connection tracking accounting of loaded extensions. An attacker on the local area network LAN could potential exploit this flaw to cause a denial of service system crash of targeted system. CVE-2014-9715 Jan Beulic...

SUSE SLED12 / SLES12 Security Update : Security Update for Linux Kernel (SUSE-SU-2015:0658-1)

The SUSE Linux Enterprise Server 12 kernel was updated to 3.12.39 to receive various security and bugfixes. Following security bugs were fixed : - CVE-2015-0777: The XEN usb backend could leak information to the guest system due to copying uninitialized memory. - CVE-2015-2150: Xen and the Linux...

libvirt / qemu security vulnerabilities

Crash on PCI registers, IDE controller and Physical Region Descriptor Table decoder. Code execution...

Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2015-3036)

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-3036 advisory. - crypto: aesni - fix memory usage in GCM decryption Stephan Mueller Orabug: 21077389 CVE-2015-3331 - xen/pciback: Don't disable PCICOMMAND on PCI...

USN-2608-1: QEMU vulnerabilities

Jason Geffner discovered that QEMU incorrectly handled the virtual floppy driver. This issue is known as VENOM. A malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the QEMU process. In the default installation, wh...

Ubuntu 14.04 LTS : QEMU vulnerabilities (USN-2608-1)

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2608-1 advisory. Jason Geffner discovered that QEMU incorrectly handled the virtual floppy driver. This issue is known as VENOM. A malicious guest could use this issue to...

Ubuntu 14.04 LTS : Linux kernel (Utopic HWE) vulnerabilities (USN-2589-1)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2589-1 advisory. Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest use...

Ubuntu 14.10 : linux vulnerabilities (USN-2590-1)

Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service host crash. CVE-2015-2150 A stack overflow was discovered in the the microcode loader for...

Updated kernel package fixes security vulnerabilities

This kernel update is based on upstream -longterm 3.14.39 and fixes the following security issues: It was found that the Linux kernel's Infiniband subsystem did not properly sanitize input parameters while registering memory regions from user space via the uverbs API. A local user with access to ...

USN-2590-1: Linux kernel vulnerabilities

Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service host crash. CVE-2015-2150 A stack overflow was discovered in the the microcode loader for...

USN-2589-1: Linux kernel (Utopic HWE) vulnerabilities

Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service host crash. CVE-2015-2150 A stack overflow was discovered in the the microcode loader for...

From zero to start to learn the Win32 platform buffer overflow（Part1）-bug warning-the black bar safety net

Buffer overflow is a common and we often heard of software security vulnerabilities, buffer overflow, i.e. that the data is too much to write into the memory or buffer, when a buffer within the write data is full, if you continue to write data, the data will overflow into other buffer, it will...

CVE-2015-2756

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and then accessing...