CVSS: 6.9EPSS: 0%CPEs: 6EXPL: 0CVE-2015-2666 – kernel: execution in the early microcode loader
https://notcve.org/view.php?id=CVE-2015-2666
Stack-based buffer overflow in the get_matching_model_microcode function in arch/x86/kernel/cpu/microcode/intel_early.c in the Linux kernel before 4.0 allows context-dependent attackers to gain privileges by constructing a crafted microcode header and leveraging root privileges for write access to the initrd. Desbordamiento de buffer basado en pila en la función get_matching_model_microcode en arch/x86/kernel/cpu/microcode/intel_early.c en el kernel de Linux anterior a 4.0 permite a atacantes dependientes de contexto ganar privilegios mediante la construcción de una cabecera de microcódigo manipulada y el aprovechamiento de privilegios root para acceso de escritura al initrd. A stack-based buffer overflow flaw was found in the Linux kernel's early load microcode functionality. On a system with UEFI Secure Boot enabled, a local, privileged user could use this flaw to increase their privileges to the kernel (ring0) level, bypassing intended restrictions in place. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4 http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html http://rhn.redhat.com/errata/RHSA-2015-1534.html http://www.openwall.com/lists/oss-security/2015/03/20/18 http://www.securitytracker.com/id/1032414 https://bugzilla.redhat.com/show_bug.cgi?id=1204722 https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4 https://access.redha • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 1.9EPSS: 0%CPEs: 4EXPL: 0CVE-2015-2830 – kernel: int80 fork from 64-bit tasks mishandling
https://notcve.org/view.php?id=CVE-2015-2830
arch/x86/kernel/entry_64.S in the Linux kernel before 3.19.2 does not prevent the TS_COMPAT flag from reaching a user-mode task, which might allow local users to bypass the seccomp or audit protection mechanism via a crafted application that uses the (1) fork or (2) close system call, as demonstrated by an attack against seccomp before 3.16. arch/x86/kernel/entry_64.S en el kernel de Linux anterior a 3.19.2 no impide que el indicador TS_COMPAT llegue a una tarea de modo de usuario, lo que podría permitir a usuarios locales evadir el mecanismo de protección de seccomp o de auditoria a través de una aplicación manipulada que utiliza la llamada de sistema (1) bifurcada o (2) cerrada, tal y como fue demostrado por un ataque sobre seccomp anterior a 3.16. A flaw was found in the way the Linux kernel's 32-bit emulation implementation handled forking or closing of a task with an 'int80' entry. A local user could potentially use this flaw to escalate their privileges on the system. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=956421fbb74c3a6261903f3836c0740187cf038b http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html http://rhn.redhat.com/errata/RHSA-2015-1137.html http://rhn.redhat.com/errata/RHSA-2015-1138.html http://rhn.redhat.com/errata/RHSA-2015-1221.html http& • CWE-264: Permissions, Privileges, and Access Controls CWE-393: Return of Wrong Status Code •
CVSS: 3.3EPSS: 1%CPEs: 9EXPL: 2CVE-2015-2922 – kernel: denial of service (DoS) attack against IPv6 network stacks due to improper handling of Router Advertisements.
https://notcve.org/view.php?id=CVE-2015-2922
The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementation in the IPv6 stack in the Linux kernel before 3.19.6 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message. La función ndisc_router_discovery en net/ipv6/ndisc.c en la implementación de protocolo Neighbor Discovery (ND) en la pila IPv6 en el kernel de Linux anterior a 3.19.6 permite a atacantes remotos reconfigurar una configuración 'hop-limit' a través de un valor hop_limit pequeño en un mensaje Router Advertisement (RA). It was found that the Linux kernel's TCP/IP protocol suite implementation for IPv6 allowed the Hop Limit value to be set to a smaller value than the default one. An attacker on a local network could use this flaw to prevent systems on that network from sending or receiving network packets. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6fd99094de2b83d1d4c8457f2c83483b2828e75a http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155804.html http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155854.html http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155908.html http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html http:&# • CWE-17: DEPRECATED: Code CWE-454: External Initialization of Trusted Variables or Data Stores •
CVSS: 6.2EPSS: 0%CPEs: 3EXPL: 0CVE-2015-3339 – kernel: race condition between chown() and execve()
https://notcve.org/view.php?id=CVE-2015-3339
Race condition in the prepare_binprm function in fs/exec.c in the Linux kernel before 3.19.6 allows local users to gain privileges by executing a setuid program at a time instant when a chown to root is in progress, and the ownership is changed but the setuid bit is not yet stripped. Condición de carrera en la función prepare_binprm en fs/exec.c en el kernel de Linux anterior a 3.19.6 permite a usuarios locales ganar privilegios mediante la ejecución de un programa setuid en un instancia de tiempo que un chown a root está en progreso, y el propietario ha cambiado pero el bit setuid todavía no se ha eliminado. A race condition flaw was found between the chown and execve system calls. When changing the owner of a setuid user binary to root, the race condition could momentarily make the binary setuid root. A local, unprivileged user could potentially use this flaw to escalate their privileges on the system. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8b01fc86b9f425899f8a3a8fc1c47d73c2c20543 http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157897.html http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158804.html http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html http://l • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 9.3EPSS: 0%CPEs: 11EXPL: 0CVE-2015-3331 – Kernel: crypto: buffer overruns in RFC4106 implementation using AESNI
https://notcve.org/view.php?id=CVE-2015-3331
The __driver_rfc4106_decrypt function in arch/x86/crypto/aesni-intel_glue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service (buffer overflow and system crash) or possibly execute arbitrary code by triggering a crypto API call, as demonstrated by use of a libkcapi test program with an AF_ALG(aead) socket. La función __driver_rfc4106_decrypt en arch/x86/crypto/aesni-intel_glue.c en el kernel de Linux anterior a 3.19.3 no determina correctamente las localizaciones de memoria utilizadas para datos cifrados, Lo que permite a atacantes dependientes de contexto causar una denegación de servicio (desbordamiento de buffer y caída de sistema) o posiblemente ejecutar código arbitrario mediante la provocación de una llamada de API Crypto, tal y como fue demostrado por el uso de un programa de pruebas de libkcapi con un socket AF_ALG(aead). A buffer overflow flaw was found in the way the Linux kernel's Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a connection with an active AES-GCM mode IPSec security association. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ccfe8c3f7e52ae83155cb038753f4c75b774ca8a http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html http://rhn.red • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •