CVSS: 6.2EPSS: 0%CPEs: 1EXPL: 0CVE-2016-7042 – kernel: Stack corruption while reading /proc/keys when gcc stack protector is enabled
https://notcve.org/view.php?id=CVE-2016-7042
The proc_keys_show function in security/keys/proc.c in the Linux kernel through 4.8.2, when the GNU Compiler Collection (gcc) stack protector is enabled, uses an incorrect buffer size for certain timeout data, which allows local users to cause a denial of service (stack memory corruption and panic) by reading the /proc/keys file. La función proc_keys_show en security/keys/proc.c en el kernel de Linux hasta la versión 4.8.2, cuando el protector de pila GNU Compiler Collection (gcc) está habilitado, utiliza un tamaño de búfer incorrecto para ciertos datos de tiempo de espera, lo que permite a usuarios locales provocar una denegación de servicio (corrupción de la memoria de pila y pánico) leyendo el archivo /proc/keys. It was found that when the gcc stack protector was enabled, reading the /proc/keys file could cause a panic in the Linux kernel due to stack corruption. This happened because an incorrect buffer size was used to hold a 64-bit timeout value rendered as weeks. • http://rhn.redhat.com/errata/RHSA-2017-0817.html http://www.openwall.com/lists/oss-security/2016/10/13/5 http://www.securityfocus.com/bid/93544 https://access.redhat.com/errata/RHSA-2017:1842 https://access.redhat.com/errata/RHSA-2017:2077 https://access.redhat.com/errata/RHSA-2017:2669 https://bugzilla.redhat.com/show_bug.cgi?id=1373966 https://source.android.com/security/bulletin/2017-01-01.html https://access.redhat.com/security/cve/CVE-2016-7042 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-121: Stack-based Buffer Overflow •
CVSS: 4.4EPSS: 0%CPEs: 1EXPL: 0CVE-2016-7097 – kernel: Setting a POSIX ACL via setxattr doesn't clear the setgid bit
https://notcve.org/view.php?id=CVE-2016-7097
The filesystem implementation in the Linux kernel through 4.8.2 preserves the setgid bit during a setxattr call, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. La implementación del sistema de archivos en el kernel de Linux hasta la versión 4.8.2 preserva el bit setgid durante una llamada setxattr, lo que permite a usuarios locales obtener privilegios de grupo aprovechando la existencia de un programa setgid con restricciones en permisos de ejecución. It was found that when file permissions were modified via chmod and the user modifying them was not in the owning group or capable of CAP_FSETID, the setgid bit would be cleared. Setting a POSIX ACL via setxattr sets the file permissions as well as the new ACL, but doesn't clear the setgid bit in a similar way. This could allow a local user to gain group privileges via certain setgid applications. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=073931017b49d9458aa351605b43a7e34598caef http://marc.info/?l=linux-fsdevel&m=147162313630259&w=2 http://rhn.redhat.com/errata/RHSA-2017-0817.html http://www.openwall.com/lists/oss-security/2016/08/26/3 http://www.securityfocus.com/bid/92659 http://www.securitytracker.com/id/1038201 http://www.spinics.net/lists/linux-fsdevel/msg98328.html http://www.ubuntu.com/usn/USN-3146-1 http://www.ubuntu.com • CWE-285: Improper Authorization CWE-287: Improper Authentication •
CVSS: 7.8EPSS: 0%CPEs: 13EXPL: 0CVE-2016-7425
https://notcve.org/view.php?id=CVE-2016-7425
The arcmsr_iop_message_xfer function in drivers/scsi/arcmsr/arcmsr_hba.c in the Linux kernel through 4.8.2 does not restrict a certain length field, which allows local users to gain privileges or cause a denial of service (heap-based buffer overflow) via an ARCMSR_MESSAGE_WRITE_WQBUFFER control code. La función arcmsr_iop_message_xfer en drivers/scsi/arcmsr/arcmsr_hba.c en el kernel de Linux hasta la versión 4.8.2 no restringe una cierta longitud de campo, lo que permite a usuarios locales obtener privilegios o provocar una denegación de servicio (desbordamiento de búfer basado en memoria dinámica) a través de un código de control ARCMSR_MESSAGE_WRITE_WQBUFFER. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7bc2b55a5c030685b399bb65b6baa9ccc3d1f167 http://marc.info/?l=linux-scsi&m=147394713328707&w=2 http://marc.info/?l=linux-scsi&m=147394796228991&w=2 http://www.openwall.com/lists/oss-security/2016/09/17/2 http://www.securityfocus.com/bid/93037 http://www.ubuntu.com/usn/USN-3144-1 http://www.ubuntu.com/usn/USN-3144-2 http://www.ubuntu.com/usn/USN-3145-1 http://www.ubuntu.com/usn/ • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 0CVE-2016-7039 – kernel: remotely triggerable unbounded recursion in the vlan gro code leading to a kernel crash
https://notcve.org/view.php?id=CVE-2016-7039
The IP stack in the Linux kernel through 4.8.2 allows remote attackers to cause a denial of service (stack consumption and panic) or possibly have unspecified other impact by triggering use of the GRO path for large crafted packets, as demonstrated by packets that contain only VLAN headers, a related issue to CVE-2016-8666. La pila IP en el kernel de Linux hasta la versión 4.8.2 permite a atacantes remotos provocar una denegación de servicio (consumo de pila y pánico) o tener otro posible impacto no especificado desencadenando uso de la ruta GRO para paquetes grandes manipulados, como se demuestra por los paquetes que contienen solo cabeceras VLAN, un problema relacionado con CVE-2016-8666. Linux kernel built with the 802.1Q/802.1ad VLAN(CONFIG_VLAN_8021Q) OR Virtual eXtensible Local Area Network(CONFIG_VXLAN) with Transparent Ethernet Bridging(TEB) GRO support, is vulnerable to a stack overflow issue. It could occur while receiving large packets via GRO path, as an unlimited recursion could unfold in both VLAN and TEB modules, leading to a stack corruption in the kernel. • http://rhn.redhat.com/errata/RHSA-2016-2047.html http://rhn.redhat.com/errata/RHSA-2016-2107.html http://rhn.redhat.com/errata/RHSA-2016-2110.html http://www.openwall.com/lists/oss-security/2016/10/10/15 http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html http://www.securityfocus.com/bid/93476 https://access.redhat.com/errata/RHSA-2017:0372 https://bto.bluecoat.com/ • CWE-399: Resource Management Errors CWE-674: Uncontrolled Recursion •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 2CVE-2016-6828 – Linux Kernel - TCP Related Read Use-After-Free
https://notcve.org/view.php?id=CVE-2016-6828
The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option. La función tcp_check_send_head en include/net/tcp.h en el kernel de Linux en versiones anteriores a 4.7.5 no mantiene adecuadamente cierto estado SACK tras una copia de datos fallida, lo que permite a usuarios locales provocar una denegación de servicio (uso después de liberación de memoria tcp_xmit_retransmit_queue y caída de sistema ) a través de una opción SACK manipulada. A use-after-free vulnerability was found in tcp_xmit_retransmit_queue and other tcp_* functions. This condition could allow an attacker to send an incorrect selective acknowledgment to existing connections, possibly resetting a connection. • https://www.exploit-db.com/exploits/40731 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4 http://rhn.redhat.com/errata/RHSA-2017-0036.html http://rhn.redhat.com/errata/RHSA-2017-0086.html http://rhn.redhat.com/errata/RHSA-2017-0091.html http://rhn.redhat.com/errata/RHSA-2017-0113.html http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5 http://www.openwall.com/lists/oss-security/2016/08/15/ • CWE-416: Use After Free •