CVSS: 7.8EPSS: 0%CPEs: 31EXPL: 0CVE-2017-7980 – Qemu: display: cirrus: OOB r/w access issues in bitblt routines
https://notcve.org/view.php?id=CVE-2017-7980
Heap-based buffer overflow in Cirrus CLGD 54xx VGA Emulator in Quick Emulator (Qemu) 2.8 and earlier allows local guest OS users to execute arbitrary code or cause a denial of service (crash) via vectors related to a VNC client updating its display after a VGA operation. Desbordamiento de búfer basado en memoria dinámica (heap) en Cirrus CLGD 54xx VGA Emulator en Quick Emulator (Qemu) en versiones 2.8 y anteriores permite que los usuarios invitados del sistema operativo ejecuten código arbitrario o provoquen una denegación de servicio (DoS) mediante vectores relacionados con un cliente VNC que actualiza su display después de una operación VGA. An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data via various bitblt functions. A privileged user 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. • http://ubuntu.com/usn/usn-3289-1 http://www.openwall.com/lists/oss-security/2017/04/21/1 http://www.securityfocus.com/bid/102129 http://www.securityfocus.com/bid/97955 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-2017:0988 https • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2017-8112
https://notcve.org/view.php?id=CVE-2017-8112
hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (infinite loop and CPU consumption) via the message ring page count. hw/scsi/vmw_pvscsi.c en QEMU (también conocido como Quick Emulator) permite a los usuarios locales privilegiados de los sistemas operativos invitados causar una denegación de servicio (bucle infinito y consumo de CPU) a través de mensajes ring en la pagina de recuento. • http://www.openwall.com/lists/oss-security/2017/04/26/5 http://www.securityfocus.com/bid/98015 https://bugzilla.redhat.com/show_bug.cgi?id=1445621 https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html https://lists.gnu.org/archive/html/qemu-devel/2017-04/msg04578.html https://security.gentoo.org/glsa/201706-03 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 6.5EPSS: 0%CPEs: 6EXPL: 0CVE-2017-8086
https://notcve.org/view.php?id=CVE-2017-8086
Memory leak in the v9fs_list_xattr function in hw/9pfs/9p-xattr.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (memory consumption) via vectors involving the orig_value variable. Fuga de memoria en la función v9fs_list_xattr en hw/9pfs/9p-xattr.c en QEMU (también conocido como Quick Emulator) permite a los usuarios locales privilegiados de los sistemas operativos invitados causar una denegación de servicio (por consumo de memoria) a través de vectores que implican la variable orig_value • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=4ffcdef4277a91af15a3c09f7d16af072c29f3f2 http://www.openwall.com/lists/oss-security/2017/04/25/5 http://www.securityfocus.com/bid/98012 https://bugzilla.redhat.com/show_bug.cgi?id=1444781 https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html https://lists.gnu.org/archive/html/qemu-devel/2017-04/msg01636.html https://security.gentoo.org/glsa/201706-03 • CWE-772: Missing Release of Resource after Effective Lifetime •
CVSS: 7.0EPSS: 0%CPEs: 1EXPL: 0CVE-2017-8284
https://notcve.org/view.php?id=CVE-2017-8284
The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limit the instruction size, which allows local users to gain privileges by creating a modified basic block that injects code into a setuid program, as demonstrated by procmail. NOTE: the vendor has stated "this bug does not violate any security guarantees QEMU makes. ** EN DISPUTA ** La función disas_insn en target / i386 / translate.c en QEMU para las versiones anteriores a la 2.9.0, cuando se utiliza el modo TCG sin aceleración de hardware, no limita el tamaño de instrucción, lo que permite a los usuarios locales obtener privilegios creando un bloque básico modificado que inyecta código en un programa setuid, como lo demuestra procmail. NOTA: el proveedor ha declarado que "este error no viola las garantías de seguridad de QEMU." • https://bugs.chromium.org/p/project-zero/issues/detail?id=1122 https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14 • CWE-94: Improper Control of Generation of Code ('Code Injection') •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2017-7718 – Qemu: display: cirrus: OOB read access issue
https://notcve.org/view.php?id=CVE-2017-7718
hw/display/cirrus_vga_rop.h in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors related to copying VGA data via the cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_ functions. En el archivo hw/display/cirrus_vga_rop.h en QEMU (también se conoce como Quick Emulator), permite a los usuarios privilegiados del sistema operativo invitado local causar una denegación de servicio (lectura fuera de límites y bloqueo del proceso QEMU) por medio de vectores relacionados con el copiado de datos VGA mediante las funciones cirrus_bitblt_rop_fwd_transp_ y cirrus_bitblt__. An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions (for example, cirrus_bitblt_rop_fwd_transp_). A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in denial of service. • http://git.qemu-project.org/?p=qemu.git%3Ba=commit%3Bh=215902d7b6fb50c6fc216fc74f770858278ed904 http://www.openwall.com/lists/oss-security/2017/04/19/4 http://www.securityfocus.com/bid/97957 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-2017:0988 • CWE-125: Out-of-bounds Read •