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,...

KB4511553: Windows 10 Version 1809 and Windows Server 2019 August 2019 Security Update

The remote Windows host is missing security update 4511553. 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...

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-2019-9511

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...

NGINX -- Multiple vulnerabilities

NGINX Team reports: Several security issues were identified in nginx HTTP/2 implementation which might cause excessive memory consumption and CPU usage CVE-2019-9511, CVE-2019-9513, CVE-2019-9516. The issues affect nginx compiled with the ngxhttpv2module not compiled by default if the http2 optio...

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...

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...

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...

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...

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...

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...

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...

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...

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...

NewStart CGSL MAIN 4.05 : firefox Multiple Vulnerabilities (NS-SA-2019-0103)

The remote NewStart CGSL host, running version MAIN 4.05, has firefox packages installed that are affected by multiple vulnerabilities: - A buffer overflow in WebGL triggerable by web content, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird 52.1, Firefox ESR...

Amazon Linux 2 : thunderbird (ALAS-2019-1267)

When an inner window is reused, it does not consider the use of document.domain for cross-origin protections. If pages on different subdomains ever cooperatively use document.domain, then either page can abuse this to inject script into arbitrary pages on the other subdomain, even those that did...

Critical: thunderbird

Issue Overview: When an inner window is reused, it does not consider the use of document.domain for cross-origin protections. If pages on different subdomains ever cooperatively use document.domain, then either page can abuse this to inject script into arbitrary pages on the other subdomain, even...

Amazon Linux AMI : tomcat8 (ALAS-2019-1234)

The HTTP/2 implementation in Apache Tomcat accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able...