Denial of service

The Network Block Device NBD server in Quick Emulator QEMU before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from...

CVE-2017-15119

The Network Block Device NBD server in Quick Emulator QEMU before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from...

CVE-2017-15119

The Network Block Device NBD server in Quick Emulator QEMU before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from...

CVE-2017-15119

CVE-2017-15119 affects the NBD server in Quick Emulator (QEMU). The NBD server can be DoSed if a client sends oversized option requests, causing the server to spend CPU time reading up to 4 GB per request and potentially starving other requests. This vulnerability is described as occurring in QEM...

CVE-2017-15119

The Network Block Device NBD server in Quick Emulator QEMU before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from...

Authentication flaw

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process...

CVE-2017-7539

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process...

CVE-2017-7539

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process...

CVE-2017-7539

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process...

CVE-2017-7539

CVE-2017-7539 affects QEMU’s NBD server: an assertion-failure during initial connection negotiation can crash qemu-nbd, enabling a remote DoS. Affected product: QEMU/NBD server prior to 2.10.1. Root cause: I/O coroutine in the initial negotiation is undefined. Impact: Denial of service via server...

CVE-2017-7539

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process...

CVE-2017-7539

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process...

Debian DSA-4213-1 : qemu - security update (Spectre)

Several vulnerabilities were discovered in qemu, a fast processor emulator. - CVE-2017-15038 Tuomas Tynkkynen discovered an information leak in 9pfs. - CVE-2017-15119 Eric Blake discovered that the NBD server insufficiently restricts large option requests, resulting in denial of service. -...

Moderate: Red Hat Security Advisory: qemu-kvm-rhev security and bug fix update

An update for qemu-kvm-rhev is now available for Red Hat OpenStack Platform 10.0 Newton, Red Hat OpenStack Platform 11.0 Ocata, Red Hat OpenStack Platform 12.0 Pike, Red Hat OpenStack Platform 8.0 Liberty, and Red Hat OpenStack Platform 9.0 Mitaka. Red Hat Product Security has rated this update a...

nbd-info NSE Script

Displays protocol and block device information from NBD servers. The Network Block Device protocol is used to publish block devices over TCP. This script connects to an NBD server and attempts to pull down a list of exported block devices and their details For additional information: Script...

Ubuntu 14.04 LTS / 16.04 LTS : QEMU regression (USN-3575-2)

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-3575-2 advisory. USN-3575-1 fixed vulnerabilities in QEMU. The fix for CVE-2017-11334 caused a regression in Xen environments. This update removes the problematic fix...

Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-3575-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3575-1 advisory. It was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash...

[SECURITY] Fedora 27 Update: dracut-046-8.git20180105.fc27

dracut contains tools to create a bootable initramfs for 2.6 Linux kernels. Unlike existing implementations, dracut does hard-code as little as possible into the initramfs. dracut contains various modules which are driven by the event-based udev. Having root on MD, DM, LVM2, LUKS is supported as...

[SECURITY] Fedora 26 Update: dracut-046-8.git20180105.fc26

dracut contains tools to create a bootable initramfs for 2.6 Linux kernels. Unlike existing implementations, dracut does hard-code as little as possible into the initramfs. dracut contains various modules which are driven by the event-based udev. Having root on MD, DM, LVM2, LUKS is supported as...

Qemu: qemu-nbd: server breaks with SIGPIPE upon client abort

Quick Emulator QEMU built with the Network Block Device NBD Server support is vulnerable to a crash via a SIGPIPE signal. The crash can occur if a client aborts a connection due to any failure during negotiation or read operation. A remote user/process could use this flaw to crash the qemu-nbd...