SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:1703-1)

qemu was updated to fix 29 security issues. These security issues were fixed : - CVE-2016-4439: Avoid OOB access in 53C9X emulation bsc980711 - CVE-2016-4441: Avoid OOB access in 53C9X emulation bsc980723 - CVE-2016-4952: Avoid OOB access in Vmware PV SCSI emulation bsc981266 - CVE-2015-8817: Avo...

The vulnerability of the Linux operating system allows a malicious individual to trigger a service failure, increase their privileges, or execute arbitrary code.

Overfilling the buffer in the completeemulatedmmio function allows the user of the host operating system to execute any code in the host operating system...

Comodo AntiVirus - Forwards Emulated API Calls to the Real API During Scans

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=769 Comodo Antivirus includes a x86 emulator that is used to unpack and monitor obfuscated executables, this is common practice among antivirus products. The idea is that emulators can run the code safely for a short time, giving t...

qemu: Heap overflow vulnerability in ne2000_receive() function

A heap buffer overflow flaw was found in the way QEMU's NE2000 NIC emulation implementation handled certain packets received over the network. A privileged user inside a guest could use this flaw to crash the QEMU instance denial of service or potentially execute arbitrary code on the host...

xen-tools -- libxl fails to honour readonly flag on disks with qemu-xen

The Xen Project reports: Callers of libxl can specify that a disk should be read-only to the guest. However, there is no code in libxl to pass this information to qemu-xen the upstream-based qemu; and indeed there is no way in qemu to make a disk read-only. The vulnerability is exploitable only v...

Ubuntu 14.04 LTS : QEMU vulnerabilities (USN-2724-1)

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2724-1 advisory. It was discovered that QEMU incorrectly handled a PRDT with zero complete sectors in the IDE functionality. A malicious guest could possibly use this iss...

CVE-2015-5166

Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice...

CVE-2015-5166: Undefined Security Weakness

Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice...

Use after free in QEMU/Xen block unplug protocol

ISSUE DESCRIPTION When unplugging an emulated block device the device was not fully unplugged, meaning a second unplug attempt would attempt to unplug the device a second time using a previously freed pointer. IMPACT An HVM guest which has access to an emulated IDE disk device may be able to...

qemu, xen-tools -- use-after-free in QEMU/Xen block unplug protocol

The Xen Project reports: When unplugging an emulated block device the device was not fully unplugged, meaning a second unplug attempt would attempt to unplug the device a second time using a previously freed pointer. An HVM guest which has access to an emulated IDE disk device may be able to...

Xen Patches VM Escape Flaw

The Xen Project has patched a serious vulnerability that could allow an attacker in a guest virtual machine to escape and gain the ability to run arbitrary code on the host machine. The vulnerability is in the QEMU open source machine emulator that ships as part of the Xen hypervisor. The problem...

QEMU heap overflow flaw while processing certain ATAPI commands.

ISSUE DESCRIPTION The QEMU security team has predisclosed the following advisory: A heap overflow flaw was found in the way QEMU's IDE subsystem handled I/O buffer access while processing certain ATAPI commands. A privileged guest user in a guest with CDROM drive enabled could potentially use thi...

D-Link Cookie Command Execution

This module requires Metasploit: http://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework require 'msf/core' class Metasploit3 'D-Link Cookie Command Execution', 'Description' = %q This module exploits an anonymous remote upload and code execution vulnerabilit...

Debian DLA-249-1 : qemu-kvm security update (Venom)

A vulnerability was discovered in the qemu virtualisation solution : CVE-2015-3456 Jason Geffner discovered a buffer overflow in the emulated floppy disk drive, resulting in the potential execution of arbitrary code. Despite the end-of-life of qemu-kvm support in the old-oldstable distribution...

Debian DLA-248-1 : qemu security update (Venom)

A vulnerability was discovered in the qemu virtualisation solution : CVE-2015-3456 Jason Geffner discovered a buffer overflow in the emulated floppy disk drive, resulting in the potential execution of arbitrary code. Despite the end-of-life of qemu support in the old-oldstable distribution...

Heap overflow in QEMU PCNET controller, allowing guest->host escape

ISSUE DESCRIPTION The QEMU security team has predisclosed the following advisory: pcnettransmit loads a transmit-frame descriptor from the guest into the /tmd/ local variable to recover a length field, a status field and a guest-physical location of the associated frame buffer. If the status fiel...

Fedora 22 : xen-4.5.0-9.fc22 (2015-8194) (Venom)

Privilege escalation via emulated floppy disk drive XSA-133, CVE-2015-3456 1221153 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without...

Fedora 21 : xen-4.4.2-4.fc21 (2015-8270) (Venom)

Privilege escalation via emulated floppy disk drive XSA-133, CVE-2015-3456 1221153 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without...

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 update for xen (important)

Xen was updated to 4.3.4 to fix multiple vulnerabities and non-security bugs. The following vulnerabilities were fixed: - Long latency MMIO mapping operations are not preemptible XSA-125 CVE-2015-2752 bnc922705 - Unmediated PCI command register access in qemu XSA-126 CVE-2015-2756 bnc922706 -...