Libvirt: denial of service in xml parsing

A flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user provided XML files was performed before the ACL checks. A malicious user with limited permissions could exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting in a denial-of-service condition.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

不加限制或调节的资源分配

libvirt 安全漏洞

libvirt是libvirt开源的一个用于实现Linux虚拟化功能的Linux API。它支持各种Hypervisor，包括Xen和KVM，以及QEMU和用于其他操作系统的一些虚拟产品。 libvirt存在安全漏洞，该漏洞源于XML文件处理过程中ACL检查前执行解析，可能导致恶意用户通过特制XML文件使主机内存过度消耗，进而导致拒绝服务。

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