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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: 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 •

CVSS: 7.7EPSS: 0%CPEs: 8EXPL: 0

CVE-2020-1711 – QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

https://notcve.org/view.php?id=CVE-2020-1711

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU versions 2.12.0 before 4.2.1 handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host. Se detectó una fallo de acceso al búfer de la pila fuera de límites en la manera en que el controlador de iSCSI Block versiones 2.xx de QEMU hasta 2.12.0 incluyéndola, manejó una respuesta proveniente de un servidor iSCSI mientras se comprobaba el estado de un Logical Address Block (LBA) en una rutina iscsi_co_block_status(). Un usuario remoto podría usar este fallo para bloquear el proceso de QEMU, resultando en una denegación de servicio o posible ejecución de código arbitrario con privilegios del proceso de QEMU en el host. An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. • http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html https://access.redhat.com/errata/RHSA-2020:0669 https://access.redhat.com/errata/RHSA-2020:0730 https://access.redhat.com/errata/RHSA-2020:0731 https://access.redhat.com/errata/RHSA-2020:0773 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1711 https://lists.debian.org/debian-lts-announce/2020/03/msg00017.html https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html https://lists.gnu&# • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0

CVE-2020-7211

https://notcve.org/view.php?id=CVE-2020-7211

tftp.c in libslirp 4.1.0, as used in QEMU 4.2.0, does not prevent ..\ directory traversal on Windows. El archivo tftp.c en libslirp versión 4.1.0, como es usado en QEMU versión 4.2.0, no impide el salto de directorio ..\ en Windows. • http://www.openwall.com/lists/oss-security/2020/01/17/2 https://gitlab.freedesktop.org/slirp/libslirp/commit/14ec36e107a8c9af7d0a80c3571fe39b291ff1d4 https://security-tracker.debian.org/tracker/CVE-2020-7211 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •