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CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 2

CVE-2017-1085 – FreeBSD - 'setrlimit' Stack Clash (PoC)

https://notcve.org/view.php?id=CVE-2017-1085

In FreeBSD before 11.2-RELEASE, an application which calls setrlimit() to increase RLIMIT_STACK may turn a read-only memory region below the stack into a read-write region. A specially crafted executable could be exploited to execute arbitrary code in the user context. En FreeBSD en versiones anteriores a la 11.2-RELEASE, una aplicación que llama a setrlimit() para incrementar RLIMIT_STACK podría hacer que una región de memoria de solo lectura bajo la pila pase a ser una región de lectura y escritura. Un ejecutable especialmente manipulado podría explotarse para ejecutar código arbitrario en el contexto del usuario. • https://www.exploit-db.com/exploits/42279 https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 3

CVE-2017-1084 – FreeBSD - 'FGPE' Stack Clash (PoC)

https://notcve.org/view.php?id=CVE-2017-1084

In FreeBSD before 11.2-RELEASE, multiple issues with the implementation of the stack guard-page reduce the protections afforded by the guard-page. This results in the possibility a poorly written process could be cause a stack overflow. En FreeBSD en versiones anteriores a la 11.2-RELEASE, múltiples problemas con la implementación de la página guard de la pila reducen las protecciones de la página guard. Esto resulta en la posibilidad de que un proceso mal escrito provoque un desbordamiento de pila. • https://www.exploit-db.com/exploits/42278 https://www.exploit-db.com/exploits/42277 https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 1

CVE-2017-1083

https://notcve.org/view.php?id=CVE-2017-1083

In FreeBSD before 11.2-RELEASE, a stack guard-page is available but is disabled by default. This results in the possibility a poorly written process could be cause a stack overflow. En FreeBSD en versiones anteriores a la 11.2-RELEASE, una página guard de pila está disponible, pero está deshabilitada por defecto. Esto resulta en la posibilidad de que un proceso mal escrito provoque un desbordamiento de pila • https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0

CVE-2017-1081

https://notcve.org/view.php?id=CVE-2017-1081

In FreeBSD before 11.0-STABLE, 11.0-RELEASE-p10, 10.3-STABLE, and 10.3-RELEASE-p19, ipfilter using "keep state" or "keep frags" options can cause a kernel panic when fed specially crafted packet fragments due to incorrect memory handling. En FreeBSD, en versiones anteriores a la 11.0-STABLE, 11.0-RELEASE-p10, 10.3-STABLE y 10.3-RELEASE-p19, cuando ipfilter emplea las opciones "keep state" o "keep frags", puede provocar un pánico del kernel cuando se le alimentan fragmentos de paquetes manipulados debido a la gestión incorrecta de memoria. • http://www.securityfocus.com/bid/98089 http://www.securitytracker.com/id/1038369 https://www.freebsd.org/security/advisories/FreeBSD-SA-17:04.ipfilter.asc • CWE-20: Improper Input Validation CWE-416: Use After Free •

CVSS: 8.8EPSS: 24%CPEs: 62EXPL: 2

CVE-2016-5766 – gd: Integer overflow in _gd2GetHeader() resulting in heap overflow

https://notcve.org/view.php?id=CVE-2016-5766

Integer overflow in the _gd2GetHeader function in gd_gd2.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8, allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via crafted chunk dimensions in an image. Desbordamiento de entero en la función _gd2GetHeader en gd_gd2.c en la GD Graphics Library (también conocido como libgd) en versiones anteriores a 2.2.3, como se utiliza en PHP en versiones anteriores a 5.5.37, 5.6.x en versiones anteriores a 5.6.23 y 7.x en versiones anteriores a 7.0.8, permite a atacantes remotos provocar una denegación de servicio (desbordamiento de búfer basado en memoria dinámica y caída de aplicación) o posiblemente tener otro impacto no especificado a través de dimensiones del pedazo en una imagen manipulada. An integer overflow flaw, leading to a heap-based buffer overflow was found in the imagecreatefromgd2() function of PHP's gd extension. A remote attacker could use this flaw to crash a PHP application or execute arbitrary code with the privileges of the user running that PHP application using gd via a specially crafted GD2 image. • http://github.com/php/php-src/commit/7722455726bec8c53458a32851d2a87982cf0eac?w=1 http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00025.html http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html http://php.net/ChangeLog-5.php http://php.net/ChangeLog-7.php http://rhn.redhat.com/errata/RHSA-2016-2598.html http://rhn.redhat.com/errata/RHSA-2016-2750.html http://www.debian.org/securit • CWE-122: Heap-based Buffer Overflow CWE-190: Integer Overflow or Wraparound •