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CVSS: 7.8EPSS: 3%CPEs: 43EXPL: 0

CVE-2019-9517 – Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service

https://notcve.org/view.php?id=CVE-2019-9517

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both. Algunas implementaciones HTTP / 2 son vulnerables al almacenamiento en búfer de datos interal sin restricciones, lo que puede conducir a una denegación de servicio. • http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html http://www.openwall.com/lists/oss-security/2019/08/15/7 https://access.redhat.com/errata/RHSA-2019:2893 https://access.redhat.com/errata/RHSA-2019:2925 https://access.redhat.com/errata/RHSA-2019:2939 https://access.redhat.com/errata/RHSA-2019:2946 https:/ • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •

CVSS: 7.8EPSS: 9%CPEs: 39EXPL: 0

CVE-2019-9511 – Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service

https://notcve.org/view.php?id=CVE-2019-9511

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both. Algunas implementaciones de HTTP / 2 son vulnerables a la manipulación del tamaño de la ventana y la manipulación de priorización de flujo, lo que puede conducir a una denegación de servicio. • http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00014.html https://access.redhat.com/errata/RHSA-2019:2692 https:/ • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •

CVSS: 7.8EPSS: 82%CPEs: 55EXPL: 0

CVE-2019-9514 – Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service

https://notcve.org/view.php?id=CVE-2019-9514

Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both. Algunas implementaciones de HTTP / 2 son vulnerables a una inundación de reinicio, lo que puede conducir a una denegación de servicio. El atacante abre una serie de secuencias y envía una solicitud no válida sobre cada secuencia que debería solicitar una secuencia de tramas RST_STREAM del par. • http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html http://lists.opensuse.org/opensuse-security-announce/2019-09 • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •

CVSS: 7.5EPSS: 1%CPEs: 48EXPL: 0

CVE-2018-1336 – tomcat: A bug in the UTF-8 decoder can lead to DoS

https://notcve.org/view.php?id=CVE-2018-1336

An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86. Una gestión incorrecta del desbordamiento en el decodificador UTF-8 con caracteres suplementarios puede conducir a un bucle infinito en el decodificador, provocando una denegación de servicio (DoS). Versiones afectadas: Apache Tomcat de la versión 9.0.0.M9 a la 9.0.7, de la 8.5.0 a la 8.5.30, de la 8.0.0.RC1 a la 8.0.51 y de la versión 7.0.28 a la 7.0.86. • http://mail-archives.us.apache.org/mod_mbox/www-announce/201807.mbox/%3C20180722090435.GA60759%40minotaur.apache.org%3E http://www.securityfocus.com/bid/104898 http://www.securitytracker.com/id/1041375 https://access.redhat.com/errata/RHEA-2018:2188 https://access.redhat.com/errata/RHEA-2018:2189 https://access.redhat.com/errata/RHSA-2018:2700 https://access.redhat.com/errata/RHSA-2018:2701 https://access.redhat.com/errata/RHSA-2018:2740 https://access.redhat.com/errata/RHSA-20 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

CVSS: 6.5EPSS: 0%CPEs: 51EXPL: 1

CVE-2018-1304 – tomcat: Incorrect handling of empty string URL in security constraints can lead to unintended exposure of resources

https://notcve.org/view.php?id=CVE-2018-1304

The URL pattern of "" (the empty string) which exactly maps to the context root was not correctly handled in Apache Tomcat 9.0.0.M1 to 9.0.4, 8.5.0 to 8.5.27, 8.0.0.RC1 to 8.0.49 and 7.0.0 to 7.0.84 when used as part of a security constraint definition. This caused the constraint to be ignored. It was, therefore, possible for unauthorised users to gain access to web application resources that should have been protected. Only security constraints with a URL pattern of the empty string were affected. El patrón de URL "" (la cadena vacía) que mapea exactamente al root de contexto no se gestionó correctamente en Apache Tomcat 9.0.0.M1 a 9.0.4, 8.5.0 a 8.5.27, 8.0.0.RC1 a 8.0.49 y 7.0.0 a 7.0.84 al emplearse como parte de una definición de limitación de seguridad. • https://github.com/knqyf263/CVE-2018-1304 http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html http://www.securityfocus.com/bid/103170 http://www.securitytracker.com/id/1040427 https://access.redhat.com/errata/RHSA-2018:0465 https://access.redhat.com/errata/RHSA-2018:0466 https://access.redhat.com/errata/RHSA-2018:1320 https://access.redhat.com/errata/RHSA-2018:1447 https://access.redha • CWE-284: Improper Access Control •