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CVSS: 5.8EPSS: 0%CPEs: 4EXPL: 1

net/ipv4/tcp_input.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hijack TCP sessions via a blind in-window attack. net/ipv4/tcp_input.c en el kernel de Linux en versiones anteriores a 4.7 no determina adecuadamente la tasa de segmentos de desafío ACK, lo que facilita a atacantes remotos secuestrar sesiones TCP a través de un ataque ciego en ventana. It was found that the RFC 5961 challenge ACK rate limiting as implemented in the Linux kernel's networking subsystem allowed an off-path attacker to leak certain information about a given connection by creating congestion on the global challenge ACK rate limit counter and then measuring the changes by probing packets. An off-path attacker could use this flaw to either terminate TCP connection and/or inject payload into non-secured TCP connection between two endpoints on the network. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=75ff39ccc1bd5d3c455b6822ab09e533c551f758 http://rhn.redhat.com/errata/RHSA-2016-1631.html http://rhn.redhat.com/errata/RHSA-2016-1632.html http://rhn.redhat.com/errata/RHSA-2016-1633.html http://rhn.redhat.com/errata/RHSA-2016-1657.html http://rhn.redhat.com/errata/RHSA-2016-1664.html http://rhn.redhat.com/errata/RHSA-2016-1814.html http://rhn.redhat.com/errata/RHSA-2016-1815.html http://rhn. • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-203: Observable Discrepancy •

CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0

fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink. fs/overlayfs/dir.c en la implementación del sistema de archivos OverlayFS en el kernel de Linux en versiones anteriores a 4.6 no verifica adecuadamente la dentry superior antes de proceder con el procesamiento de desconexión y cambio de nombre de llamadas al sistema, lo que permite a usuarios locales provocar una denegación del servicio (caída de sistema) a través de una llamada al sistema cambiada de nombre que especifica un self-hardlink. It was found that the unlink and rename functionality in overlayfs did not verify the upper dentry for staleness. A local, unprivileged user could use the rename syscall on overlayfs on top of xfs to panic or crash the system. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11f3710417d026ea2f4fcf362d866342c5274185 http://rhn.redhat.com/errata/RHSA-2016-1847.html http://rhn.redhat.com/errata/RHSA-2016-1875.html http://www.openwall.com/lists/oss-security/2016/07/11/8 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/91709 http://www.securitytracker. • CWE-20: Improper Input Validation CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0

Multiple integer overflows in the (1) cvt_by_strip and (2) cvt_by_tile functions in the tiff2rgba tool in LibTIFF 4.0.6 and earlier, when -b mode is enabled, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted TIFF image, which triggers an out-of-bounds write. Múltiples desbordamientos de entero en las funciones (1) cvt_by_strip y (2) cvt_by_tile en la herramienta tiff2rgba en LibTIFF 4.0.6 y versiones anteriores, cuando está habilitado el modo -b, permiten a atacantes remotos provocar una denegación de servicio (caída) o ejecutar código arbitrario a través de una imagen TIFF manipulada, lo que desencadena una escritura fuera de límites. • http://bugzilla.maptools.org/show_bug.cgi?id=2545 http://lists.opensuse.org/opensuse-updates/2016-09/msg00039.html http://rhn.redhat.com/errata/RHSA-2016-1546.html http://rhn.redhat.com/errata/RHSA-2016-1547.html http://www.debian.org/security/2017/dsa-3762 http://www.openwall.com/lists/oss-security/2016/04/08/6 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http:&# • CWE-190: Integer Overflow or Wraparound CWE-787: Out-of-bounds Write •

CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0

The _TIFFVGetField function in tif_dirinfo.c in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via a crafted TIFF image. La función _TIFFVGetField en tif_dirinfo.c en LibTIFF 4.0.6 y versiones anteriores permite a atacantes remotos provocar una denegación de servicio (escritura fuera de límites) o ejecutar código arbitrario a través de una imagen TIFF manipulada. • http://bugzilla.maptools.org/show_bug.cgi?id=2549 http://rhn.redhat.com/errata/RHSA-2016-1546.html http://rhn.redhat.com/errata/RHSA-2016-1547.html http://www.openwall.com/lists/oss-security/2016/04/08/9 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/85953 http://www.securityfocus.com/bid/85960 https://bugzilla.redhat.com/show_bug&# • CWE-787: Out-of-bounds Write •

CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0

Heap-based buffer overflow in the loadImage function in the tiffcrop tool in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via a crafted TIFF image with zero tiles. Desbordamiento de búfer basado en memoria dinámica en la función loadImage en la herramienta tiffcrop en LibTIFF 4.0.6 y versiones anteriores permite a atacantes remotos provocar una denegación de servicio (escritura fuera de límites) o ejecutar código arbitrario a través de una imagen TIFF manipulada con cero azulejos. • http://bugzilla.maptools.org/show_bug.cgi?id=2543 http://lists.opensuse.org/opensuse-updates/2016-09/msg00039.html http://rhn.redhat.com/errata/RHSA-2016-1546.html http://rhn.redhat.com/errata/RHSA-2016-1547.html http://www.debian.org/security/2017/dsa-3762 http://www.openwall.com/lists/oss-security/2016/04/12/3 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http:&# • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •