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 RSTSTREAM frames from the peer. Depending on how the peer queues the...

KB4512501: Windows 10 Version 1803 August 2019 Security Update

The remote Windows host is missing security update 4512501. It is, therefore, affected by multiple vulnerabilities : - An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call ALPC. An attacker who successfully exploited this...

HTTP/2 implementations do not robustly handle abnormal traffic and resource exhaustion

Overview Multiple HTTP/2 implementations are vulnerable to a variety of denial-of-service DoS attacks. Description The Security Considerations section of RFC7540 discusses some of the considerations needed for HTTP/2 connections as they demand more resources to operate than HTTP/1.1 connections...

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 ...

Microsoft Windows 'HTTP.sys' CVE-2019-9513 Denial of Service Vulnerability

Description Microsoft Windows is prone to a remote denial-of-service vulnerability. An attacker can exploit this issue to cause the affected system to become unresponsive, resulting in a denial-of-service condition. Technologies Affected Microsoft Windows 10 Version 1607 for 32-bit Systems...

HTTP/2 CVE-2019-9517 Remote Denial of Service Vulnerability

Description HTTP/2 is prone to a remote denial-of-service vulnerability. Attackers can exploit this issue to consume excess memory, denying service to legitimate users. Technologies Affected Apache Apache 2.4.20 Apache Apache 2.4.23 Apache Apache 2.4.25 Apache Apache 2.4.26 Apache Apache 2.4.27...

nghttp2 -- multiple vulnerabilities

nghttp2 GitHub releases: This release fixes CVE-2019-9511 "Data Dribble" and CVE-2019-9513 "Resource Loop" vulnerability in nghttpx and nghttpd. Specially crafted HTTP/2 frames cause Denial of Service by consuming CPU time. Check out...

CVE-2019-9513

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU...

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 RSTSTREAM frames from the peer. Depending on how the peer queues the...

KB4512507: Windows 10 Version 1703 August 2019 Security Update

The remote Windows host is missing security update 4512507. It is, therefore, affected by multiple vulnerabilities : - An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call ALPC. An attacker who successfully exploited this...

h2o -- multiple HTTP/2 vulnerabilities

Jonathon Loomey of Netflix reports: HTTP/2 implementations do not robustly handle abnormal traffic and resource exhaustion Recently, a series of DoS attack vulnerabilities have been reported on a broad range of HTTP/2 stacks. Among the vulnerabilities, H2O is exposed to the following: CVE-2019-95...

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

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 RSTSTREAM frames from the peer. Depending on how the peer queues the...

CVE-2019-9515

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost...

CVE-2019-9512

Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU,...

traefik -- Denial of service in HTTP/2

The traefik project reports: Update of dependency to go go1.12.8 resolves potential HTTP/2 denial of service in traefik...

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 RSTSTREAM frames from the peer. Depending on how the peer queues the...

KLA11534 Multiple vulnerabilities in Microsoft Windows

Multiple vulnerabilities were found in Microsoft Windows. Malicious users can exploit these vulnerabilities to obtain sensitive information, execute arbitrary code, gain privileges, cause denial of service, spoof user interface, bypass security restrictions. Below is a complete list of...

KB4512508: Windows 10 Version 1903 August 2019 Security Update

The remote Windows host is missing security update 4512508. It is, therefore, affected by multiple vulnerabilities : - An elevation of privilege vulnerability exists in the way that the Windows kernel image handles objects in memory. An attacker who successfully exploited the vulnerability could...

h2o -- multiple HTTP/2 vulnerabilities

Jonathon Loomey of Netflix reports: HTTP/2 implementations do not robustly handle abnormal traffic and resource exhaustion Recently, a series of DoS attack vulnerabilities have been reported on a broad range of HTTP/2 stacks. Among the vulnerabilities, H2O is exposed to the following: CVE-2019-95...

About the security content of SwiftNIO HTTP/2 1.5.0

About the security content of SwiftNIO HTTP/2 1.5.0 This document describes the security content of SwiftNIO HTTP/2 1.5.0. About Apple security updates For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or...