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CVSS: 5.5EPSS: 0%CPEs: 6EXPL: 0

CVE-2020-13253

https://notcve.org/view.php?id=CVE-2020-13253

sd_wp_addr in hw/sd/sd.c in QEMU 4.2.0 uses an unvalidated address, which leads to an out-of-bounds read during sdhci_write() operations. A guest OS user can crash the QEMU process. En la función sd_wp_addr en el archivo hw/sd/sd.c en QEMU versión 4.2.0, utiliza una dirección no comprobada, lo que conlleva a una lectura fuera de límites durante las operaciones sdhci_write(). Un usuario del Sistema Operativo invitado puede bloquear el proceso QEMU. • http://www.openwall.com/lists/oss-security/2020/05/27/2 https://bugzilla.redhat.com/show_bug.cgi?id=1838546 https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg05835.html https://security.gentoo.org/glsa/202011-09 https://usn.ubuntu.com/4467-1 • CWE-125: Out-of-bounds Read •

CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0

CVE-2020-10702

https://notcve.org/view.php?id=CVE-2020-10702

A flaw was found in QEMU in the implementation of the Pointer Authentication (PAuth) support for ARM introduced in version 4.0 and fixed in version 5.0.0. A general failure of the signature generation process caused every PAuth-enforced pointer to be signed with the same signature. A local attacker could obtain the signature of a protected pointer and abuse this flaw to bypass PAuth protection for all programs running on QEMU. Se encontró un fallo en QEMU en la implementación del soporte Pointer Authentication (PAuth) para ARM introducido en la versión 4.0 y corregido en la versión 5.0.0. Un fallo general del proceso de generación de firmas causó que cada puntero aplicado por PAuth se firmara con la misma firma. • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10702 https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de0b1bae6461f67243282555475f88b2384a1eb9 https://security.netapp.com/advisory/ntap-20200724-0007 • CWE-325: Missing Cryptographic Step •

CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0

CVE-2020-10717

https://notcve.org/view.php?id=CVE-2020-10717

A potential DoS flaw was found in the virtio-fs shared file system daemon (virtiofsd) implementation of the QEMU version >= v5.0. Virtio-fs is meant to share a host file system directory with a guest via virtio-fs device. If the guest opens the maximum number of file descriptors under the shared directory, a denial of service may occur. This flaw allows a guest user/process to cause this denial of service on the host. Se encontró un fallo potencial de DoS en la implementación del demonio del sistema de archivos compartido virtio-fs (virtiofsd) de QEMU versiones anteriores a la versión v5.0. • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10717 https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg00141.html https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg00143.html https://security.gentoo.org/glsa/202011-09 https://www.openwall.com/lists/oss-security/2020/05/04/1 • CWE-770: Allocation of Resources Without Limits or Throttling •

CVSS: 3.3EPSS: 0%CPEs: 1EXPL: 0

CVE-2020-11869

https://notcve.org/view.php?id=CVE-2020-11869

An integer overflow was found in QEMU 4.0.1 through 4.2.0 in the way it implemented ATI VGA emulation. This flaw occurs in the ati_2d_blt() routine in hw/display/ati-2d.c while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service. Se encontró un desbordamiento de enteros en QEMU versiones 4.0.1 hasta 4.2.0, en la manera en que implementó la emulación ATI VGA. Este error se produce en la rutina ati_2d_blt() en el archivo hw/display/ati-2d.c mientras se manejan operaciones de escritura MMIO por medio de la devolución de llamada de ati_mm_write(). • http://www.openwall.com/lists/oss-security/2020/04/24/2 https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ac2071c3791b67fc7af78b8ceb320c01ca1b5df7 https://usn.ubuntu.com/4372-1 • CWE-190: Integer Overflow or Wraparound •

CVSS: 6.8EPSS: 0%CPEs: 1EXPL: 0

CVE-2020-11102

https://notcve.org/view.php?id=CVE-2020-11102

hw/net/tulip.c in QEMU 4.2.0 has a buffer overflow during the copying of tx/rx buffers because the frame size is not validated against the r/w data length. El archivo hw/net/tulip.c en QEMU versión 4.2.0, presenta un desbordamiento de búfer durante la copia de los búferes tx/rx porque el tamaño de trama no está validado con respecto a la longitud de datos r/w. • http://www.openwall.com/lists/oss-security/2020/04/06/1 https://lists.gnu.org/archive/html/qemu-devel/2020-03/msg08322.html https://security.gentoo.org/glsa/202005-02 • CWE-787: Out-of-bounds Write •