CVSS: 6.0EPSS: 0%CPEs: 2EXPL: 1CVE-2021-4158 – QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c
https://notcve.org/view.php?id=CVE-2021-4158
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition. Se ha encontrado un problema de desreferencia de puntero NULL en el código ACPI de QEMU. Un usuario malicioso y con privilegios dentro del huésped podía usar este fallo para bloquear el proceso de QEMU en el host, resultando en una situación de denegación de servicio. • https://access.redhat.com/security/cve/CVE-2021-4158 https://bugzilla.redhat.com/show_bug.cgi?id=2035002 https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e https://gitlab.com/qemu-project/qemu/-/issues/770 https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2021-3947
https://notcve.org/view.php?id=CVE-2021-3947
A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information. Se ha encontrado un desbordamiento de pila en QEMU en el componente NVME. El fallo es encontrado en nvme_changed_nslist(), donde un huésped malicioso que controle determinadas entradas puede leer memoria fuera de límites. • https://bugzilla.redhat.com/show_bug.cgi?id=2021869 https://security.gentoo.org/glsa/202208-27 https://security.netapp.com/advisory/ntap-20220318-0003 • CWE-125: Out-of-bounds Read •
CVSS: 9.9EPSS: 0%CPEs: 24EXPL: 0CVE-2016-9603 – Qemu: cirrus: heap buffer overflow via vnc connection
https://notcve.org/view.php?id=CVE-2016-9603
A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process. Se ha detectado una vulnerabilidad de desbordamiento de búfer basado en memoria dinámica (heap) en el soporte del controlador de pantalla VNC del emulador Cirrus CLGD 54xx VGA de QEMU en versiones anteriores a la 2.9. El problema podía ocurrir cuando un cliente VNC intentaba actualizar su pantalla después de que un invitado realizara una operación VGA. Un usuario/proceso privilegiado dentro de un guest podría usar esta vulnerabilidad para provocar que el proceso de QEMU se cierre inesperadamente o, potencialmente, ejecutar código arbitrario en el host con privilegios del proceso de QEMU. • http://www.securityfocus.com/bid/96893 http://www.securitytracker.com/id/1038023 https://access.redhat.com/errata/RHSA-2017:0980 https://access.redhat.com/errata/RHSA-2017:0981 https://access.redhat.com/errata/RHSA-2017:0982 https://access.redhat.com/errata/RHSA-2017:0983 https://access.redhat.com/errata/RHSA-2017:0984 https://access.redhat.com/errata/RHSA-2017:0985 https://access.redhat.com/errata/RHSA-2017:0987 https://access.redhat.com/errata/RHSA-2017:0988 https:& • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-122: Heap-based Buffer Overflow •
CVSS: 9.9EPSS: 0%CPEs: 32EXPL: 0CVE-2017-2620 – Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideo
https://notcve.org/view.php?id=CVE-2017-2620
Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. Quick emulator (QEMU) en versiones anteriores a la 2.8 construido con el soporte del emulador Cirrus CLGD 54xx VGA Emulator es vulnerable a un problema de acceso fuera de límites. El problema puede ocurrir al copiar datos VGA en cirrus_bitblt_cputovideo. • http://rhn.redhat.com/errata/RHSA-2017-0328.html http://rhn.redhat.com/errata/RHSA-2017-0329.html http://rhn.redhat.com/errata/RHSA-2017-0330.html http://rhn.redhat.com/errata/RHSA-2017-0331.html http://rhn.redhat.com/errata/RHSA-2017-0332.html http://rhn.redhat.com/errata/RHSA-2017-0333.html http://rhn.redhat.com/errata/RHSA-2017-0334.html http://rhn.redhat.com/errata/RHSA-2017-0350.html http://rhn.redhat.com/errata/RHSA-2017-0351.html http://rhn • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 9.1EPSS: 0%CPEs: 29EXPL: 0CVE-2017-2615 – Qemu: display: cirrus: oob access while doing bitblt copy backward mode
https://notcve.org/view.php?id=CVE-2017-2615
Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host. Quick emulator (QEMU) con soporte integrado para el emulador Cirrus CLGD 54xx VGA es vulnerable a un problema de acceso fuera de límites. Podría ocurrir mientras se copian datos VGA mediante la copia bitblt en modo backward. • http://rhn.redhat.com/errata/RHSA-2017-0309.html http://rhn.redhat.com/errata/RHSA-2017-0328.html http://rhn.redhat.com/errata/RHSA-2017-0329.html http://rhn.redhat.com/errata/RHSA-2017-0330.html http://rhn.redhat.com/errata/RHSA-2017-0331.html http://rhn.redhat.com/errata/RHSA-2017-0332.html http://rhn.redhat.com/errata/RHSA-2017-0333.html http://rhn.redhat.com/errata/RHSA-2017-0334.html http://rhn.redhat.com/errata/RHSA-2017-0344.html http://rhn • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •