A design flaw issue was found in the Red Hat OpenStack Platform director use of TripleO to enable libvirtd based live-migration. Libvirtd is deployed by default (by director) listening on 0.0.0.0 (all interfaces) with no-authentication or encryption. Anyone able to make a TCP connection to any compute host IP address, including 127.0.0.1, other loopback interface addresses, or in some cases possibly addresses that have been exposed beyond the management interface, could use this to open a virsh session to the libvirtd instance and gain control of virtual machine instances or possibly take over the host.
A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.
Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrusbitbltcputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.
A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.
A vulnerability was found in openstack-ironic-inspector all versions excluding 5.0.2, 6.0.3, 7.2.4, 8.0.3 and 8.2.1. A SQL-injection vulnerability was found in openstack-ironic-inspector's nodecache.findnode(). This function makes a SQL query using unfiltered data from a server reporting inspection results (by a POST to the /v1/continue endpoint). Because the API is unauthenticated, the flaw could be exploited by an attacker with access to the network on which ironic-inspector is listening. Because of how ironic-inspector uses the query results, it is unlikely that data could be obtained. However, the attacker could pass malicious data and create a denial of service.
Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host.
A flaw was found in openstack-tripleo-common as shipped with Red Hat Openstack Enterprise 10 and 11. The sudoers file as installed with OSP's openstack-tripleo-common package is much too permissive. It contains several lines for the mistral user that have wildcards that allow directory traversal with '..' and it grants full passwordless root access to the validations user.
A flaw was found in Ansible Engine, all versions 2.7.x, 2.8.x and 2.9.x prior to 2.7.17, 2.8.11, and 2.9.7 respectively, when using ansiblefacts as a subkey of itself and promoting it to a variable when inject is enabled, overwriting the ansiblefacts after the clean. An attacker could take advantage of this by altering the ansiblefacts, such as ansiblehosts, users and any other key data which would lead into privilege escalation or code injection.
Memory leak in the audio/audio.c in QEMU (aka Quick Emulator) allows remote attackers to cause a denial of service (memory consumption) by repeatedly starting and stopping audio capture.
Heap-based buffer overflow in Cirrus CLGD 54xx VGA Emulator in Quick Emulator (Qemu) 2.8 and earlier allows local guest OS users to execute arbitrary code or cause a denial of service (crash) via vectors related to a VNC client updating its display after a VGA operation.
An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.
A vulnerability was found in ceilometer before version 12.0.0.0rc1. An Information Exposure in ceilometer-agent prints sensitive configuration data to log files without DEBUG logging being activated.
A vulnerability was found in openstack-cinder releases up to and including Queens, allowing newly created volumes in certain storage volume configurations to contain previous data. It specifically affects ScaleIO volumes using thin volumes and zero padding. This could lead to leakage of sensitive information between tenants.
A flaw was found in all dpdk version 17.x.x before 17.11.8, 16.x.x before 16.11.10, 18.x.x before 18.11.4 and 19.x.x before 19.08.1 where a malicious master, or a container with access to vhostuser socket, can send specially crafted VRINGSETNUM messages, resulting in a memory leak including file descriptors. This flaw could lead to a denial of service condition.
puppet-tripleo before versions 5.5.0, 6.2.0 is vulnerable to an access-control flaw in the IPtables rules management, which allowed the creation of TCP/UDP rules with empty port values. If SSL is enabled, a malicious user could use these open ports to gain access to unauthorized resources.
An authenticated user may receive all the roles assigned to the user's project regardless of the federation mapping when there are rules in which group-based assignments are not used. For example, by requesting an admin user to get a role in their project, the user may be granted the admin privileges for new scoped tokens. All setups using the Keystone federation with projects auto-provisioning and no group based assignments rules are affected.
Affected versions: 10.0.0, 10.0.1, 11.0.0
Qemu emulator built with the Task Priority Register(TPR) optimizations for 32-bit Windows guests, is vulnerable to a information leakage issue. It could occur while accessing Task Priority Register(TPR).
A privileged user/process inside guest could use this issue to leak host memory bytes.
Upstream patch: --------------- -> https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01118.html
Reference: ---------- -> http://www.openwall.com/lists/oss-security/2016/04/14/3
Quick emulator (Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to a divide by zero issue. It could occur while copying VGA data when cirrus graphics mode was set to be VGA. A privileged user inside guest could use this flaw to crash the Qemu process instance on the host, resulting in DoS.
Quick Emulator (Qemu) built with the USB redirector usb-guest support is vulnerable to a memory leakage flaw. It could occur while destroying the USB redirector in 'usbredirhandledestroy'. A guest user/process could use this issue to leak host memory, resulting in DoS for a host.
Memory leak in the keyboard input event handlers support in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption) by rapidly generating large keyboard events.
Quick Emulator (Qemu) built with the USB EHCI Emulation support is vulnerable to a memory leakage issue. It could occur while processing packet data in 'ehciinittransfer'. A guest user/process could use this issue to leak host memory, resulting in DoS for a host.
puppet-swift before versions 8.2.1, 9.4.4 is vulnerable to an information-disclosure in Red Hat OpenStack Platform director's installation of Object Storage (swift). During installation, the Puppet script responsible for deploying the service incorrectly removes and recreates the proxy-server.conf file with world-readable permissions.
It was found that a non privileged tenant can add a router interface to a shared / external network's subnet with an IP address outside the subnet's allocation pool. This can result in a Denial of Service.
Upstream issue:
https://bugs.launchpad.net/neutron/+bug/1757482
Upstream patch:
https://git.openstack.org/cgit/openstack/neutron/commit/?id=54aa6e81cb17b33ce4d5d469cc11dec2869c762d
An off-by-one error was found in the SCSI Device emulation in QEMU. It could occur in hw/scsi/scsi-disk.c:modesensepage() while processing MODE SELECT commands if 'page' was set to MODEPAGEALLS (0x3f). Specifically, 'page' was used to index the stack-allocated 'modesensevalid' buffer (size=0x3f), causing an off-by-one error when trying to access the last element. A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.
Quick Emulator(Qemu) built with the USB xHCI controller emulation support is vulnerable to an infinite loop issue. It could occur while processing USB command ring in 'xhciringfetch'.
A privileged user/process inside guest could use this issue to crash the Qemu process on the host leading to DoS.
Upstream patch -------------- -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg01265.html
Quick emulator(Qemu) built with the virtio framework is vulnerable to a null pointer dereference flaw. It could occur if the guest was to set the I/O descriptor buffer length to a large value.
A privileged user inside guest could use this flaw to crash the Qemu instance on the host resulting in DoS.
Upstream fix: ------------- -> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.html
Reference: ---------- -> http://www.openwall.com/lists/oss-security/2016/09/16/4
Quick Emulator(Qemu) built with the 16550A UART emulation support is vulnerable to a divide by zero issue. It could occur while updating serial device parameters in 'serialupdateparameters'.
A privileged guest user could use this flaw to crash the Qemu process instance on the host, resulting in DoS.
Upstream patch: --------------- -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02461.html
Quick Emulator(Qemu) built with the RTL8139 ethernet controller emulation support is vulnerable to an infinite loop issue. It could occur while transmitting packets in C+ mode of operation.
A privileged user inside guest could use this flaw to consume excessive CPU cycles on the host, resulting in DoS situation.
Upstream patch: --------------- -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg05495.html
Reference: ---------- -> http://www.openwall.com/lists/oss-security/2016/10/24/5
Memory leak in the usbxhciexit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device.
Quick Emulator(Qemu) built with the Intel HDA controller emulation support is vulnerable to an infinite loop issue. It could occur while processing the DMA buffer stream while doing data transfer in 'intelhdaxfer'.
A privileged user inside guest could use this flaw to consume excessive CPU cycles on the host, resulting in DoS.
Upstream patch -------------- -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg04717.html