OracleVM 3.2 : xen (OVMSA-2013-0072)

The remote OracleVM system is missing necessary patches to address critical security updates : - x86: check segment descriptor read result in 64-bit OUTS emulation When emulating such an operation from a 64-bit context CS has long mode set, and the data segment is overridden to FS/GS, the result ...

Ubuntu 12.04 LTS : linux vulnerabilities (USN-2417-1)

Nadav Amit reported that the KVM Kernel Virtual Machine mishandles noncanonical addresses when emulating instructions that change the rip Instruction Pointer. A guest user with access to I/O or the MMIO can use this flaw to cause a denial of service system crash of the guest. CVE-2014-3647 A flaw...

TPKT Server Detection

Binary data 3555.prm...

Updated kernel packages fix security vulnerabilities

This kernel update is based on upstream -longterm 3.10.60 and fixes the following security issues: The WRMSR processing functionality in the KVM subsystem in the Linux kernel through 3.17.2 does not properly handle the writing of a non- canonical address to a model-specific register, which allows...

Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling

ISSUE DESCRIPTION An error handling path in the processing of MMUMACHPHYSUPDATE failed to drop a page reference which was acquired in an earlier processing step. IMPACT Malicious or buggy stub domain kernels or tool stacks otherwise living outside of Domain0 can mount a denial of service attack...

DEBIAN-CVE-2014-8594

The dommuupdate function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service NULL pointer dereference by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging...

CVE-2014-8594

The dommuupdate function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service NULL pointer dereference by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging...

CVE-2014-8594

The dommuupdate function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service NULL pointer dereference by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging...

CVE-2014-8594

The dommuupdate function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service NULL pointer dereference by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging...

UBUNTU-CVE-2014-8595

arch/x86/x86emulate/x86emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service crash via a crafted 1 CALL, 2 JMP, 3 RETF, 4 LCALL, 5 LJMP, or 6 LRET far branch instruction...

Null pointer dereference

The dommuupdate function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service NULL pointer dereference by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging...

CVE-2014-8594

CVE-2014-8594 affects Xen 4.x up to 4.4.x (Xen hypervisor) where do_mmu_update in arch/x86/mm.c does not properly restrict updates to PV page tables. This enables remote PV guests to trigger a denial of service via a NULL pointer dereference by leveraging hardware emulation services for HVM guest...

Missing privilege level checks in x86 emulation of far branches

ISSUE DESCRIPTION The emulation of far branch instructions CALL, JMP, and RETF in Intel assembly syntax, LCALL, LJMP, and LRET in AT&T assembly syntax incompletely performs privilege checks. However these instructions are not usually handled by the emulator. Exceptions to this are - when a memory...

Insufficient restrictions on certain MMU update hypercalls

ISSUE DESCRIPTION MMU update operations targeting page tables are intended to be used on PV guests only. The lack of a respective check made it possible for such operations to access certain function pointers which remain NULL when the target guest is using Hardware Assisted Paging HAP. IMPACT...

CVE-2014-8951

Technical details (affected product, component, root cause, versions, or remediation) are not publicly provided in the supplied documents. Monitor for updates.

CVE-2014-8951

Unspecified vulnerability in Check Point Security Gateway R75, R76, R77, and R77.10, when UserCheck is enabled and the 1 Application Control, 2 URL Filtering, 3 DLP, 4 Threat Emulation, 5 Anti-Bot, or 6 Anti-Virus blade is used, allows remote attackers to cause a denial of service fwk0 process...

RHEL 6 : kernel (RHSA-2014:1843)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2014:1843 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. A race condition flaw was found in the way the Linux...

kernel: kvm: PIT timer race condition

A race condition flaw was found in the way the Linux kernel's KVM subsystem handled PIT Programmable Interval Timer emulation. A guest user who has access to the PIT I/O ports could use this flaw to crash the host...

DEBIAN-CVE-2014-3647

arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service guest OS crash via a crafted application...

Race condition

Race condition in the kvmmigratepittimer function in arch/x86/kvm/i8254.c in the KVM subsystem in the Linux kernel through 3.17.2 allows guest OS users to cause a denial of service host OS crash by leveraging incorrect PIT emulation...