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CentOS Update for libvirt CESA-2011:1019 centos5 x86_64

Information

Severity

Severity

Medium

Family

Family

CentOS Local Security Checks

CVSSv2 Base

CVSSv2 Base

4.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

9 years ago

Modified

Modified

3 years ago

Summary

The remote host is missing an update for the 'libvirt' package(s) announced via the referenced advisory.

Insight

Insight

The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. An integer overflow flaw was found in libvirtd's RPC call handling. An attacker able to establish read-only connections to libvirtd could trigger this flaw by calling virDomainGetVcpus() with specially-crafted parameters, causing libvirtd to crash. (CVE-2011-2511) This update fixes the following bugs: * libvirt was rebased from version 0.6.3 to version 0.8.2 in Red Hat Enterprise Linux 5.6. A code audit found a minor API change that effected error messages seen by libvirt 0.8.2 clients talking to libvirt 0.7.1 0.7.7 (0.7.x) servers. A libvirt 0.7.x server could send VIR_ERR_BUILD_FIREWALL errors where a libvirt 0.8.2 client expected VIR_ERR_CONFIG_UNSUPPORTED errors. In other circumstances, a libvirt 0.8.2 client saw a 'Timed out during operation' message where it should see an 'Invalid network filter' error. This update adds a backported patch that allows libvirt 0.8.2 clients to interoperate with the API as used by libvirt 0.7.x servers, ensuring correct error messages are sent. (BZ#665075) * libvirt could crash if the maximum number of open file descriptors (_SC_OPEN_MAX) grew larger than the FD_SETSIZE value because it accessed file descriptors outside the bounds of the set. With this update the maximum number of open file descriptors can no longer grow larger than the FD_SETSIZE value. (BZ#665549) * A libvirt race condition was found. An array in the libvirt event handlers was accessed with a lock temporarily released. In rare cases, if one thread attempted to access this array but a second thread reallocated the array before the first thread reacquired a lock, it could lead to the first thread attempting to access freed memory, potentially causing libvirt to crash. With this update libvirt no longer refers to the old array and, consequently, behaves as expected. (BZ#671569) * Guests connected to a passthrough NIC would kernel panic if a system_reset signal was sent through the QEMU monitor. With this update you can reset such guests as expected. (BZ#689880) * When using the Xen kernel, the rpmbuild command failed on the xencapstest test. With this update you can run rpmbuild successfully when using the Xen kernel. (BZ#690459) * When a disk was hot unplugged, 'ret >= 0' was passed to the qemuAuditDisk calls in disk hotunplug operations before ret was, in fact, set to 0. As well, the error path jumped to the 'cleanup&q ... Description truncated, please see the referenced URL(s) for more information.

Affected Software

Affected Software

libvirt on CentOS 5

Solution

Solution

Please install the updated packages.

Common Vulnerabilities and Exposures (CVE)

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sudo snap install multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

3. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. If you don’t have it already, install Brew. Then, to install Multipass simply execute:

brew install --cask multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

2. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. Download the installer for Windows

Note: You need Windows 10 Pro/Enterprise/Education v 1803 or later, or any Windows 10 with VirtualBox

2. Ensure your network is private

Make sure your local network is designated as private, otherwise Windows prevents Multipass from starting.

3. Run the installer

You need to allow the installer to gain Administrator privileges.

4. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04

5. Log into the multipass instance

multipass shell mageni

6. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash