Debian DSA-3262-1 : xen - security update (Venom)

Jason Geffner discovered a buffer overflow in the emulated floppy disk drive, resulting in the potential execution of arbitrary code. This only affects HVM guests. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from Debia...

[SECURITY] [DSA 3262-1] xen security update

------------------------------------------------------------------------- Debian Security Advisory DSA-3262-1 [email protected] http://www.debian.org/security/ Moritz Muehlenhoff May 18, 2015 http://www.debian.org/security/faq -...

DSA-3262-1 xen - security update

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CentOS 5 : xen (CESA-2015:1002) (Venom)

Updated xen packages that fix one security issue are now available for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available from t...

Information leak through XEN_DOMCTL_gettscinfo

ISSUE DESCRIPTION The handler for XENDOMCTLgettscinfo failed to initialize a padding field subsequently copied to guest memory. A similar bug existed in XENSYSCTLgetdomaininfolist, which is addressed by the patches provided here even though that operation was declared by XSA-77 not to provide...

Unmediated PCI command register access in qemu

ISSUE DESCRIPTION HVM guests are currently permitted to modify the memory and I/O decode bits in the PCI command register of devices passed through to them. Unless the device is an SR-IOV virtual function, after disabling one or both of these bits subsequent accesses to the MMIO or I/O port range...

xen-tools -- Unmediated PCI command register access in qemu

The Xen Project reports: HVM guests are currently permitted to modify the memory and I/O decode bits in the PCI command register of devices passed through to them. Unless the device is an SR-IOV virtual function, after disabling one or both of these bits subsequent accesses to the MMIO or I/O por...

xen-kernel and xen-tools -- Long latency MMIO mapping operations are not preemptible

The Xen Project reports: The XENDOMCTLmemorymapping hypercall allows long running operations without implementing preemption. This hypercall is used by the device model as part of the emulation associated with configuration of PCI devices passed through to HVM guests and is therefore indirectly...

Scientific Linux Security Update : virt-who on SL7.x (noarch) (20150305)

It was discovered that the /etc/sysconfig/virt-who configuration file, which may contain hypervisor authentication credentials, was world- readable. A local user could use this flaw to obtain authentication credentials from this file. CVE-2014-0189 The virt-who package has been upgraded to upstre...

DEBIAN-CVE-2015-2151

The x86 emulator in Xen 3.2.x through 4.5.x does not properly ignore segment overrides for instructions with register operands, which allows local guest users to obtain sensitive information, cause a denial of service memory corruption, or possibly execute arbitrary code via unspecified vectors...

DEBIAN-CVE-2015-2045

The HYPERVISORxenversion hypercall in Xen 3.2.x through 4.5.x does not properly initialize data structures, which allows local guest users to obtain sensitive information via unspecified vectors...

Information leak via internal x86 system device emulation

ISSUE DESCRIPTION Emulation routines in the hypervisor dealing with certain system devices check whether the access size by the guest is a supported one. When the access size is unsupported these routines failed to set the data to be returned to the guest for read accesses, so that hypervisor sta...

Xen External X86 System Device Emulation Information Disclosure Vulnerability

Xen is an open source virtual machine. Xen has a security vulnerability that allows a malicious HVM Guest to simulate reading sensitive data from other Guests via an external X86 system setting...

[SECURITY] Fedora 21 Update: virt-who-0.8-11.fc21

Agent that collects information about virtual guests present in the system and report them to the subscription manager...

CVE-2015-1563

The ARM GIC distributor virtualization in Xen 4.4.x and 4.5.x allows local guests to cause a denial of service by causing a large number messages to be logged...

DEBIAN-CVE-2014-6268

The evtchnfifosetpending function in Xen 4.4.x allows local guest users to cause a denial of service host crash via vectors involving an uninitialized FIFO-based event channel control block when 1 binding or 2 moving an event to a different VCPU...

[USN-2441-1] Linux kernel vulnerabilities

========================================================================== Ubuntu Security Notice USN-2441-1 December 12, 2014 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: -...

USN-2448-2: Linux kernel regression

USN-2448-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression TCP Throughput drops to zero for several drivers after upgrading. This update fixes the problem. We apologize for the inconvenience. Original advisory details: An information leak in the Linux kernel was discover...

DEBIAN-CVE-2014-9065

common/spinlock.c in Xen 4.4.x and earlier does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service write denial or NMI watchdog timeout and host crash via a large number of read requests, a different vulnerability to CVE-2014-9066...

UBUNTU-CVE-2014-9065

common/spinlock.c in Xen 4.4.x and earlier does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service write denial or NMI watchdog timeout and host crash via a large number of read requests, a different vulnerability to CVE-2014-9066...