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CVSS: 6.8EPSS: 2%CPEs: 110EXPL: 0

Multiple race conditions in the (1) virDomainBlockStats, (2) virDomainGetBlockInf, (3) qemuDomainBlockJobImpl, and (4) virDomainGetBlockIoTune functions in libvirt before 1.2.1 do not properly verify that the disk is attached, which allows remote read-only attackers to cause a denial of service (libvirtd crash) via the virDomainDetachDeviceFlags command. Múltiples condiciones de carrera en las funciones (1) virDomainBlockStats, (2) virDomainGetBlockInf, (3) qemuDomainBlockJobImpl y (4) virDomainGetBlockIoTune en libvirt anteriores a 1.2.1 no verifica correctamente que el disco esté conectado, lo cual permite a atacantes remotos con permisos de sólo lectura causar denegación de servicio (caída de libvirtd) a través del comando virDomainDetachDeviceFlags. • http://libvirt.org/news.html http://lists.opensuse.org/opensuse-updates/2014-02/msg00060.html http://lists.opensuse.org/opensuse-updates/2014-02/msg00062.html http://rhn.redhat.com/errata/RHSA-2014-0103.html http://secunia.com/advisories/56186 http://secunia.com/advisories/56446 http://secunia.com/advisories/60895 http://security.gentoo.org/glsa/glsa-201412-04.xml http://www.debian.org/security/2014/dsa-2846 http://www.ubuntu.com/usn/USN-2093-1 https://bugzilla • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVSS: 3.3EPSS: 2%CPEs: 110EXPL: 1

Race condition in the virNetServerClientStartKeepAlive function in libvirt before 1.2.1 allows remote attackers to cause a denial of service (libvirtd crash) by closing a connection before a keepalive response is sent. Condición de carrera en la función virNetServerClientStartKeepAlive en libvirt anteriores a 1.2.1 permite a atacantes remotos causar denegación de servicio (caída de libvirtd) mediante el cierre de conexiones antes de que una respuesta keepalive sea enviada. • https://github.com/tagatac/libvirt-CVE-2014-1447 http://libvirt.org/news.html http://lists.opensuse.org/opensuse-updates/2014-02/msg00060.html http://lists.opensuse.org/opensuse-updates/2014-02/msg00062.html http://rhn.redhat.com/errata/RHSA-2014-0103.html http://secunia.com/advisories/56321 http://secunia.com/advisories/56446 http://secunia.com/advisories/60895 http://security.gentoo.org/glsa/glsa-201412-04.xml http://www.debian.org/security/2014/dsa-2846 http:// • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVSS: 2.1EPSS: 0%CPEs: 14EXPL: 0

The lxcDomainGetMemoryParameters method in lxc/lxc_driver.c in libvirt 1.0.5 through 1.2.0 does not properly check the status of LXC guests when reading memory tunables, which allows local users to cause a denial of service (NULL pointer dereference and libvirtd crash) via a guest in the shutdown status, as demonstrated by the "virsh memtune" command. El método lxcDomainGetMemoryParameters en lxc/lxc_driver.c en libvirt 1.0.5 a 1.2.0 no comprueba correctamente el estado de invitados LXC cuando lee configuraciones de memoria, lo cual permite a usuarios locales causar denegación de servicio (referencia a puntero a NULL y caída de libvirtd) a través de un invitado en el estado de apagado, como se demuestra con el comando "virsh memtune". • http://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=f8c1cb90213508c4f32549023b0572ed774e48aa http://lists.opensuse.org/opensuse-updates/2014-01/msg00004.html http://osvdb.org/101485 http://secunia.com/advisories/56245 http://secunia.com/advisories/60895 http://security.gentoo.org/glsa/glsa-201412-04.xml http://www.ubuntu.com/usn/USN-2093-1 https://www.redhat.com/archives/libvir-list/2013-December/msg01170.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 7.2EPSS: 0%CPEs: 2EXPL: 0

virt-login-shell in libvirt 1.1.2 through 1.1.3 allows local users to overwrite arbitrary files and possibly gain privileges via unspecified environment variables or command-line arguments. virt-login-shell en libvirt v1.1.2 hasta v1.1.3 permite a usuarios locales sobreescribir ficheros aleatorios y posiblemente obtener privilegios a través de variables de entorno no especificadas o argumentos de línea de comandos. • http://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=3e2f27e13b94f7302ad948bcacb5e02c859a25fc http://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=8c3586ea755c40d5e01b22cb7b5c1e668cdec994 http://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=b7fcc799ad5d8f3e55b89b94e599903e3c092467 http://lists.fedoraproject.org/pipermail/package-announce/2013-November/121370.html http://secunia.com/advisories/60895 http://security.gentoo.org/glsa/glsa-201412-04.xml http://wiki.libvirt.org/page/Maintenance_Releases https://bugzilla.redh • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 8.5EPSS: 0%CPEs: 4EXPL: 0

The virConnectDomainXMLToNative API function in libvirt 1.1.0 through 1.1.3 checks for the connect:read permission instead of the connect:write permission, which allows attackers to gain domain:write privileges and execute Qemu binaries via crafted XML. NOTE: some of these details are obtained from third party information. La función de la API virConnectDomainXMLToNative en libvirt versiones 1.1.0 hasta 1.1.3, comprueba el permiso connect:read en lugar del permiso connect:write, que permite a los atacantes conseguir privilegios domain:write y ejecutar archivos binarios de Qemu por medio de un XML diseñado. NOTA: algunos de estos detalles se obtienen a partir de información de terceros. • http://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=57687fd6bf7f6e1b3662c52f3f26c06ab19dc96c http://secunia.com/advisories/55210 http://secunia.com/advisories/60895 http://security.gentoo.org/glsa/glsa-201412-04.xml http://wiki.libvirt.org/page/Maintenance_Releases http://www.securitytracker.com/id/1029241 http://www.ubuntu.com/usn/USN-2026-1 https://bugzilla.redhat.com/show_bug.cgi?id=1015259 • CWE-264: Permissions, Privileges, and Access Controls •