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

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

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

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: 7.1EPSS: 0%CPEs: 15EXPL: 1

When PHP EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in PHP versions 7.1.x below 7.1.31, 7.2.x below 7.2.21 and 7.3.x below 7.3.8 it is possible to supply it with data what will cause it to read past the allocated buffer. This may lead to information disclosure or crash. Cuando la extensión EXIF de PHP está analizando información EXIF de una imagen, p.ej. por medio de la función exif_read_data(), en PHP versiones 7.1.x anteriores a 7.1.31, versiones 7.2.x anteriores a 7.2.21 y versiones 7.3.x anteriores a 7.3.8, es posible suministrarle datos que harán que se lea más allá del búfer asignado . Esto puede conllevar a la divulgación de información o bloqueo. • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00019.html http://seclists.org/fulldisclosure/2019/Oct/15 http://seclists.org/fulldisclosure/2019/Oct/55 https://access.redhat.com/errata/RHSA-2019:3299 https://bugs.php.net/bug.php?id=78256 https://lists.debian.org/debian-lts-announce/2019/08/msg00010.html https://seclists.org/bugtraq/2019/Oct/9 https://seclists.org/bugtraq/2019/Sep/35 https://seclists.org/bugtraq/2019/Sep/38 https://security.netapp • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-125: Out-of-bounds Read •

CVSS: 7.1EPSS: 0%CPEs: 15EXPL: 1

When PHP EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in PHP versions 7.1.x below 7.1.31, 7.2.x below 7.2.21 and 7.3.x below 7.3.8 it is possible to supply it with data what will cause it to read past the allocated buffer. This may lead to information disclosure or crash. Cuando la extensión EXIF de PHP está analizando información EXIF de una imagen, p.ej. por medio de la función exif_read_data(), en PHP versiones 7.1.x anteriores a 7.1.31, versiones 7.2.x anteriores a 7.2.21 y versiones 7.3.x anteriores a 7.3.8, es posible suministrarle datos que causará que se lea más allá del búfer asignado. Esto puede conllevar a la divulgación de información o bloqueo. • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00019.html http://seclists.org/fulldisclosure/2019/Oct/15 http://seclists.org/fulldisclosure/2019/Oct/55 https://access.redhat.com/errata/RHSA-2019:3299 https://bugs.php.net/bug.php?id=78222 https://lists.debian.org/debian-lts-announce/2019/08/msg00010.html https://seclists.org/bugtraq/2019/Oct/9 https://seclists.org/bugtraq/2019/Sep/35 https://seclists.org/bugtraq/2019/Sep/38 https://security.netapp • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-125: Out-of-bounds Read •