CVSS: 3.5EPSS: 0%CPEs: 30EXPL: 0CVE-2015-6815
https://notcve.org/view.php?id=CVE-2015-6815
The process_tx_desc function in hw/net/e1000.c in QEMU before 2.4.0.1 does not properly process transmit descriptor data when sending a network packet, which allows attackers to cause a denial of service (infinite loop and guest crash) via unspecified vectors. La función process_tx_desc en el archivo hw/net/e1000.c en QEMU versiones anteriores a 2.4.0.1, no procesa apropiadamente los datos del descriptor de transmisión cuando se envía un paquete de red, lo que permite a atacantes causar una denegación de servicio (bucle infinito y bloqueo de invitado) por medio de vectores no especificados. • http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168077.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168646.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168671.html http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00026.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00011.html http://www.openwall.com/lists/oss-security&#x • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 7.7EPSS: 0%CPEs: 11EXPL: 0CVE-2015-3247 – spice: memory corruption in worker_update_monitors_config()
https://notcve.org/view.php?id=CVE-2015-3247
Race condition in the worker_update_monitors_config function in SPICE 0.12.4 allows a remote authenticated guest user to cause a denial of service (heap-based memory corruption and QEMU-KVM crash) or possibly execute arbitrary code on the host via unspecified vectors. Vulnerabilidad de condición de carrera en la función worker_update_monitors_config en SPICE 0.12.4, permite a usuarios remotos autenticados invitados causar una denegación de servicio (corrupción de memoria dinámica y caída de QEMU-KVM) o posiblemente ejecutar código arbitrario en el host a través de vectores no especificados. A race condition flaw, leading to a heap-based memory corruption, was found in spice's worker_update_monitors_config() function, which runs under the QEMU-KVM context on the host. A user in a guest could leverage this flaw to crash the host QEMU-KVM process or, possibly, execute arbitrary code with the privileges of the host QEMU-KVM process. • http://lists.freedesktop.org/archives/spice-devel/2015-October/022191.html http://lists.opensuse.org/opensuse-updates/2015-09/msg00018.html http://rhn.redhat.com/errata/RHSA-2015-1713.html http://rhn.redhat.com/errata/RHSA-2015-1714.html http://rhn.redhat.com/errata/RHSA-2015-1715.html http://www.debian.org/security/2015/dsa-3354 http://www.securitytracker.com/id/1033459 http://www.securitytracker.com/id/1033460 http://www.securitytracker.com/id/1033753 http://www.ubunt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 9.3EPSS: 0%CPEs: 65EXPL: 0CVE-2015-5165 – Qemu: rtl8139 uninitialized heap memory information leakage to guest (XSA-140)
https://notcve.org/view.php?id=CVE-2015-5165
The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier, allows remote attackers to read process heap memory via unspecified vectors. Vulnerabilidad en la emulación de modo offload C+ en el modelo de tarjeta de red del dispositivo RTL8139 en QEMU, tal y como se utiliza en Xen 4.5.x y versiones anteriores, permite a atacantes remotos leer la memoria dinámica del proceso a través de vectores no especificados. An information leak flaw was found in the way QEMU's RTL8139 emulation implementation processed network packets under RTL8139 controller's C+ mode of operation. An unprivileged guest user could use this flaw to read up to 65 KB of uninitialized QEMU heap memory. • http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165373.html http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html http://rhn.redhat.com/errata/RHSA-2015-1674.html http://rhn.redhat.com/errata/RHSA-2015-1683.html http: • CWE-456: Missing Initialization of a Variable CWE-908: Use of Uninitialized Resource •
CVSS: 8.8EPSS: 89%CPEs: 49EXPL: 2CVE-2015-4495 – Mozilla Firefox Security Feature Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2015-4495
The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypass the Same Origin Policy, and read arbitrary files or gain privileges, via vectors involving crafted JavaScript code and a native setter, as exploited in the wild in August 2015. Vulnerabilidad en el lector de PDF en Mozilla Firefox en versiones anteriores a 39.0.3, Firefox ESR 38.x en versiones anteriores a 38.1.1 y Firefox OS en versiones anteriores a 2.2, permite a atacantes remotos eludir la Same Origin Policy y leer archivos arbitrarios u obtener privilegios a través de vectores que implican código JavaScript manipulado y un setter nativo, tal como se explotó activamente en agosto de 2015. A flaw was discovered in Mozilla Firefox that could be used to violate the same-origin policy and inject web script into a non-privileged part of the built-in PDF file viewer (PDF.js). An attacker could create a malicious web page that, when viewed by a victim, could steal arbitrary files (including private SSH keys, the /etc/passwd file, and other potentially sensitive files) from the system running Firefox. Moxilla Firefox allows remote attackers to bypass the Same Origin Policy to read arbitrary files or gain privileges. • https://www.exploit-db.com/exploits/37772 https://github.com/vincd/CVE-2015-4495 http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html http://lists.opensuse.org/opensuse-security- •
CVSS: 3.3EPSS: 0%CPEs: 5EXPL: 0CVE-2015-2877
https://notcve.org/view.php?id=CVE-2015-2877
Kernel Samepage Merging (KSM) in the Linux kernel 2.6.32 through 4.x does not prevent use of a write-timing side channel, which allows guest OS users to defeat the ASLR protection mechanism on other guest OS instances via a Cross-VM ASL INtrospection (CAIN) attack. NOTE: the vendor states "Basically if you care about this attack vector, disable deduplication." Share-until-written approaches for memory conservation among mutually untrusting tenants are inherently detectable for information disclosure, and can be classified as potentially misunderstood behaviors rather than vulnerabilities ** DISPUTADA ** Kernel Samepage Merging (KSM) en el kernel de Linux 2.6.32 hasta la versión 4.x no previene el uso de un canal lateral de sincronización de escritura, lo que permite a usuarios invitados del SO derrotar el mecanismo de protección de ASLR en otras instancias invitadas del SO a través de un ataque Cross-VM ASL INtrospection (CAIN). NOTA: el vendedor afirma "Básicamente si te preocupa este vector de ataque, inhabilita la deduplicación". Enfoques de compartir hasta escritura para conservación de memoria entre inquilinos mutuamente desconfiados son inherentemente detectables para divulgación de información y pueden clasificarse como comportamientos potencialmente malinterpretados en lugar de vulnerabilidades. • http://www.antoniobarresi.com/files/cain_advisory.txt http://www.kb.cert.org/vuls/id/935424 http://www.securityfocus.com/bid/76256 https://bugzilla.redhat.com/show_bug.cgi?id=1252096 https://www.kb.cert.org/vuls/id/BGAR-A2CNKG https://www.kb.cert.org/vuls/id/BLUU-9ZAHZH https://www.usenix.org/system/files/conference/woot15/woot15-paper-barresi.pdf • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •