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CVSS: 7.8EPSS: 74%CPEs: 127EXPL: 0

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service. El kernel de Linux en versiones 4.9 y siguientes pueden forzarse a realizar llamadas muy caras a tcp_collapse_ofo_queue() y tcp_prune_ofo_queue() para cada paquete entrante, lo que puede conducir a una denegación de servicio. A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A remote attacker could use this flaw to trigger time and calculation expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions by sending specially modified packets within ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system. Maintaining the denial of service condition requires continuous two-way TCP sessions to a reachable open port, thus the attacks cannot be performed using spoofed IP addresses. • http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-004.txt http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20181031-02-linux-en http://www.openwall.com/lists/oss-security/2019/06/28/2 http://www.openwall.com/lists/oss-security/2019/07/06/3 http://www.openwall.com/lists/oss-security/2019/07/06/4 http://www.securityfocus.com/bid/104976 http://www.securitytracker.com/id/1041424 http://www.securitytracker.com/id/1041434 https://access.redhat.co • CWE-400: Uncontrolled Resource Consumption •

CVSS: 7.5EPSS: 0%CPEs: 27EXPL: 0

F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, or 11.6.0-11.6.3.1 virtual servers with HTTP/2 profiles enabled are vulnerable to "HPACK Bomb". Los servidores virtuales F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5 o 11.6.0-11.6.3.1 con perfiles HTTP/2 habilitados son vulnerables a "HPACK Bomb". • http://www.securityfocus.com/bid/104908 https://support.f5.com/csp/article/K45611803 • CWE-400: Uncontrolled Resource Consumption •

CVSS: 8.1EPSS: 0%CPEs: 39EXPL: 0

F5 BIG-IP 13.0.0-13.0.1, 12.1.0-12.1.3.6, or 11.2.1-11.6.3.2 HTTPS health monitors do not validate the identity of the monitored server. Los monitores de salud HTTPS F5 BIG-IP 13.0.0-13.0.1, 12.1.0-12.1.3.6 o 11.2.1-11.6.3.2 no validan la identidad del servidor monitorizado. • https://support.f5.com/csp/article/K05112543 • CWE-20: Improper Input Validation •

CVSS: 4.3EPSS: 0%CPEs: 8EXPL: 0

On F5 BIG-IP DNS 13.1.0-13.1.0.7, 12.1.3-12.1.3.5, DNS Express / DNS Zones accept NOTIFY messages on the management interface from source IP addresses not listed in the 'Allow NOTIFY From' configuration parameter when the db variable "dnsexpress.notifyport" is set to any value other than the default of "0". En F5 BIG-IP DNS 13.1.0-13.1.0.7, 12.1.3-12.1.3.5, DNS Express / DNS Zones aceptan mensajes NOTIFY en la interfaz de gestión desde las direcciones IP de origen que no están listadas en el parámetro de configuración "Allow NOTIFY From" cuando la variable db "dnsexpress.notifyport" se asigna con un valor diferente al "0" por defecto. • https://support.f5.com/csp/article/K45435121 •

CVSS: 5.3EPSS: 0%CPEs: 40EXPL: 0

A remote attacker may be able to disrupt services on F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.2.1-11.5.6 if the TMM virtual server is configured with a HTML or a Rewrite profile. TMM may restart while processing some specially prepared HTML content from the back end. Un atacante remoto podría ser capaz de interrumpir los servicios en F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1 o 11.2.1-11.5.6 si el servidor virtual TMM está configurado con un perfil HTML o Rewrite. TMM podría reiniciarse al procesar contenido HTML preparado del back end. • https://support.f5.com/csp/article/K94105051 • CWE-20: Improper Input Validation •