CVE-2014-8136

Las funciones (1) qemuDomainMigratePerform y (2) qemuDomainMigrateFinish2 en qemu/qemu_driver.c en libvirt no desbloquea el dominio cuando una comprobación de ACL falla, lo que permite a usuarios locales provocar una denegación de servicio a través de vectores sin especificar.

It was found that QEMU's qemuDomainMigratePerform() and qemuDomainMigrateFinish2() functions did not correctly perform a domain unlock on a failed ACL check. A remote attacker able to establish a connection to libvirtd could use this flaw to lock a domain of a more privileged user, causing a denial of service.

The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. It was found that QEMU's qemuDomainMigratePerform() and qemuDomainMigrateFinish2() functions did not correctly perform a domain unlock on a failed ACL check. A remote attacker able to establish a connection to libvirtd could use this flaw to lock a domain of a more privileged user, causing a denial of service. It was discovered that the virDomainSnapshotGetXMLDesc() and virDomainSaveImageGetXMLDesc() functions did not sufficiently limit the usage of the VIR_DOMAIN_XML_SECURE flag when fine-grained ACLs were enabled. A remote attacker able to establish a connection to libvirtd could use this flaw to obtain certain sensitive information from the domain XML file.