Vulnerability in libvirt - Denial of Service
Summary
DLA-1315-1: libvirt - security update. Affects libvirt versions < 0.9.12.3-1+deb7u3. Fixed in 0.9.12.3-1+deb7u3. How to fix ↓
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Background
libvirt is a virtualization API that provides a consistent interface for managing various virtualization technologies, such as KVM, QEMU, Xen, and more. It allows users to create, configure, and manage virtual machines and virtual networks. The libvirt package is used by Debian 7 Wheezy. However, a vulnerability has been discovered in libvirt that can lead to a denial of service (DoS) attack by exhausting memory resources.
Vulnerability Detail
The vulnerability in libvirt arises from a lack of restriction for the amount of data read by the QEMU Monitor socket. An attacker can exploit this flaw to send a large amount of data to the socket, causing the libvirt process to consume excessive memory resources. This can result in a DoS condition, rendering the affected system unresponsive or causing it to crash. The vulnerability has been assigned the CVE identifiers CVE-2018-1064 and CVE-2018-5748.
How To Fix
Minimum fixed version
0.9.12.3-1+deb7u3
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libvirtTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. The recommended solution is to apply the security update and upgrade the libvirt package.
Conclusion
The vulnerability in libvirt can be exploited to cause a denial of service (DoS) attack by exhausting memory resources. To mitigate this vulnerability, it is crucial to upgrade the libvirt package to the recommended version. For further support and assistance in vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for libvirt →
FAQ
libvirt is a virtualization API that provides a consistent interface for managing various virtualization technologies.
The vulnerability can lead to a denial of service (DoS) attack by exhausting memory resources, potentially rendering the affected system unresponsive or causing it to crash.
To fix this vulnerability, you need to upgrade the libvirt package to version 0.9.12.3-1+deb7u3 or later.
There is no specific workaround mentioned for this vulnerability. It is recommended to apply the security update.
You can find more information about Debian LTS security advisories, including how to apply updates and frequently asked questions, at https://wiki.debian.org/LTS.
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