CVE-2013-2078

Xen vulnerability CVE-2013-2078 affects Xen 4.0.2–4.0.4, 4.1.x and 4.2.x. Local PV guest users can trigger a hypervisor denial of service via certain bit combinations to XSETBV, per the CVE description. Connected advisories corroborate impact is related to CPU/XSAVE handling in the hypervisor; De...

CVE-2013-2078: Improper Input Validation

Xen 4.0.2 through 4.0.4, 4.1.x, and 4.2.x allows local PV guest users to cause a denial of service hypervisor crash via certain bit combinations to the XSETBV instruction...

OllyDbg / Immunity Debugger Crash

;Title : OllyDbg/Immunity Debugger - Crash POC ;Researcher : Souhail Hammou Dark-Puzzle ;Research Team : http://itsecurity.ma ;Facebook : http://www.facebook.com/dark.puzzle.sec ;Date : 29/07/2013 ;================================================================== .386 .model flat,stdcall option...

CVE-2013-1917

Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service hypervisor crash by triggering a GP fault, which is not properly handled by another IRET instruction...

CVE-2013-1917

Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service hypervisor crash by triggering a GP fault, which is not properly handled by another IRET instruction...

Debian Security Advisory DSA 2662-1 (xen - several vulnerabilities)

Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2013-1917 The SYSENTER instruction can be used by PV guests to accelerate system call processing. This instruction, however, leaves the EFLA...

Microsoft Internet Explorer 9.x <= Remote Stack Overflow PoC

Exploit for windows platform in category dos / poc ---------------------------------------------------------------------- Microsoft Internet Explorer 9.x Vendor: Microsoft Internet Explorer 9.x and below Description: The application is prone to a remote stack overflow vulnerability. Successful...

Vm86 - Syscall Task Switch Kernel Panic (Denial of Service) Privilege Escalation

Vm86 - Syscall Task Switch Kernel Panic Denial of Service Privilege Escalation Source: http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/ Introduction Problem description: The initial observation was, that the linux vm86 syscall, which allows to use the virtual-8086 mode from...

Virtual Machine Escape Exploit Targets Xen

Details of a dangerous virtual machine escape exploit were revealed Wednesday by French research outfit VUPEN Security. The attack exploits a recently reported vulnerability in Xen hypervisors and allows an attacker within a guest virtual machine to escape to the host and execute code. Virtual...

Intel CPU Vulnerability can provide control of your system to attacker

Intel CPU Vulnerability can provide control of your system to attacker The U.S. Computer Emergency Readiness Team US-CERT has disclosed a flaw in Intel chips that could allow hackers to gain control of Windows and other operating systems. The flaw has already been exploited on 64-bit versions of...

DEBIAN-CVE-2012-1138

FreeType before 2.4.9, as used in Mozilla Firefox Mobile before 10.0.4 and other products, allows remote attackers to cause a denial of service invalid heap read operation and memory corruption or possibly execute arbitrary code via vectors involving the MIRP instruction in a TrueType font...

CVE-2012-1138: Improper Restriction of Operations within the Bounds of a Memory Buffer

FreeType before 2.4.9, as used in Mozilla Firefox Mobile before 10.0.4 and other products, allows remote attackers to cause a denial of service invalid heap read operation and memory corruption or possibly execute arbitrary code via vectors involving the MIRP instruction in a TrueType font...

kernel: kvm: syscall instruction induced guest panic

The emsyscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 aka syscall opcode, which allows guest OS users to cause a denial of service guest OS crash via a crafted application, as demonstrated by an NASM file...

Medium: kernel

Issue Overview: A buffer overflow flaw was found in the way the Linux kernel's XFS file system implementation handled links with overly long path names. A local, unprivileged user could use this flaw to cause a denial of service or escalate their privileges by mounting a specially-crafted disk...

kernel, perf, python security update

CentOS Errata and Security Advisory CESA-2012:0350 Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring...

SuSE 10 Security Update : Xen (ZYPP Patch Number 7654)

A security bug was fixed in Xen - A bug was found in the way Xen handles CPUID instruction emulation during VM exits. An unprivileged guest user can potentially use this flaw to crash the guest. CVE-2011-1936 This issue only affected systems running on x86 architecture with Intel processor and VM...

kernel: xen: x86_emulate: fix SAHF emulation

Xen in the Linux kernel, when running a guest on a host without hardware assisted paging HAP, allows guest users to cause a denial of service invalid pointer dereference and hypervisor crash via the SAHF instruction...

RedHat Update for kernel RHSA-2011:1163-01

Check for the Version of kernel OpenVAS Vulnerability Test RedHat Update for kernel RHSA-2011:1163-01 Authors: System Generated Check Copyright: Copyright c 2011 Greenbone Networks GmbH, http://www.greenbone.net This program is free software; you can redistribute it and/or modify it under the ter...

Important: Red Hat Security Advisory: kernel security and bug fix update

Updated kernel packages that fix two security issues and three bugs are now available for Red Hat Enterprise Linux 5.6 Extended Update Support. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System CVSS base scores, which...

kernel: xen: svm: insufficiencies in handling emulated instructions during vm exits

The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service host crash by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread...