RedHat Update for xen RHSA-2012:1236-01

The remote host is missing an update for the SPDX-FileCopyrightText: 2012 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 scriptxrefname:"URL",...

RedHat Update for xen RHSA-2012:1236-01

Check for the Version of xen OpenVAS Vulnerability Test RedHat Update for xen RHSA-2012:1236-01 Authors: System Generated Check Copyright: Copyright c 2012 Greenbone Networks GmbH, http://www.greenbone.net This program is free software; you can redistribute it and/or modify it under the terms of...

Scientific Linux Security Update : xen on SL5.x i386/x86_64 (20120905)

The xen packages contain administration tools and the xend service for managing the kernel-xen kernel for virtualization on Red Hat Enterprise Linux. A flaw was found in the way QEMU handled VT100 terminal escape sequences when emulating certain character devices. A guest user with privileges to...

qemu: VT100 emulation vulnerability

Qemu, as used in Xen 4.0, 4.1 and possibly other products, when emulating certain devices with a virtual console backend, allows local OS guest users to gain privileges via a crafted escape VT100 sequence that triggers the overwrite of a "device model's address space."...

XENMEM_populate_physmap DoS vulnerability

ISSUE DESCRIPTION XENMEMpopulatephysmap can be called with invalid flags. By calling it with MEMFpopulateondemand flag set, a BUG can be triggered if a translating paging mode is not being used. IMPACT A malicious guest kernel can crash the host. VULNERABLE SYSTEMS All Xen systems running PV...

hypercall set_debugreg vulnerability

ISSUE DESCRIPTION setdebugreg allows writes to reserved bits of the DR7 debug control register on x86-64. IMPACT A malicious guest can cause the host to crash, leading to a DoS. If the vulnerable hypervisor is run on future hardware, the impact of the vulnerability might be widened depending on t...

HVM guest destroy p2m teardown host DoS vulnerability

ISSUE DESCRIPTION An HVM guest is able to manipulate its physical address space such that tearing down the guest takes an extended period amount of time searching for shared pages. This causes the domain 0 VCPU which tears down the domain to be blocked in the destroy hypercall. This causes that...

Scientific Linux Security Update : kvm on SL5.4 i386/x86_64

The x86 emulator implementation was missing a check for the Current Privilege Level CPL and I/O Privilege Level IOPL. A user in a guest could leverage these flaws to cause a denial of service guest crash or possibly escalate their privileges within that guest. CVE-2010-0298, CVE-2010-0306 A flaw...

Scientific Linux Security Update : xen on SL5.x i386/x86_64

Note: Troy Dawson has tested this update on a machine hosting both paravirtualized and fully virtualized machines, both 32 bit and 64 bit. He did the update while all the machines were running, none of them had any problems. He also tried stopping, starting, and rebooting several of the machines...

Scientific Linux Security Update : kernel on SL6.x i386/x86_64

Security issues : - Using PCI passthrough without interrupt remapping support allowed KVM guests to generate MSI interrupts and thus potentially inject traps. A privileged guest user could use this flaw to crash the host or possibly escalate their privileges on the host. The fix for this issue ca...

Scientific Linux Security Update : xen on SL5.x i386/x86_64

CVE-2009-3525 Xen: PyGrub missing support for password configuration command The pyGrub boot loader did not honor the 'password' option in the grub.conf file for para-virtualized guests. Users with access to a guest's console could use this flaw to bypass intended access restrictions and boot the...

Fedora 15 : xen-4.1.2-6.fc15 (2012-1539)

Fix buffer overflow in e1000 emulation for HVM guests CVE-2012-0029, Start building xen's ocaml, fix a crash and turn a backtrace into an ordinary error Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempt...

qemu-dm Local Privilege Escalation Vulnerability

ISSUE DESCRIPTION Heap-based buffer overflow in the processtxdesc function in the e1000 emulation allows the guest to cause a denial of service QEMU crash and possibly execute arbitrary code via crafted legacy mode packets. Upstream qemu has already released an advisory hence there is no embargo...

Low: Red Hat Bug Fix Advisory: libvirt bug fix and enhancement update

Updated libvirt packages that fix multiple bugs and add two enhancements are now available for Red Hat Enterprise Linux 6. The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. These updated libvirt packages include...

PT-2013-1400 · Xen +1 · Xen +1

Name of the Vulnerable Software and Affected Versions: Xen versions 3.3 and earlier Description: The issue is related to an off-by-one error in the addr ok macro, which can be exploited by local 64-bit PV guest administrators to cause a denial of service, resulting in a host crash. This can be...

Xen <= 3.3 DoS due to incorrect virtual address validation

ISSUE DESCRIPTION The x8664 addrok macro intends to ensure that the checked address is either in the positive half of the 48-bit virtual address space, or above the Xen-reserved area. However, the current shift count is off-by-one, allowing full access to the "negative half" too, via certain...

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

Updated kernel packages that fix several security issues, various bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System CVSS base scores,...

CentOS Update for xen CESA-2009:1472 centos5 i386

Check for the Version of xen OpenVAS Vulnerability Test CentOS Update for xen CESA-2009:1472 centos5 i386 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...

CentOS Update for rgmanager CESA-2009:1339 centos5 i386

Check for the Version of rgmanager OpenVAS Vulnerability Test CentOS Update for rgmanager CESA-2009:1339 centos5 i386 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 ...

CentOS Update for xen CESA-2009:1472 centos5 i386

The remote host is missing an update for the SPDX-FileCopyrightText: 2011 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 scriptxrefname:"URL",...