6253 matches found
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...
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...
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...
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-2019-9514
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...
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,...
CVE-2019-9516
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory fo...
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 byt...
CVE-2019-9518
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSHPROMISE. The peer spends ti...
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...
PT-2019-3017
Name of the Vulnerable Software and Affected Versions HTTP/2 implementations affected versions not specified golang.org/x/net/http2 affected versions not specified Arista EOS with TerminAttr and OpenConfig enabled Arista CloudVision Portal ingest component in the CVP Backend Arista Wi-Fi software...
CVE-2019-9512: Uncontrolled Resource Consumption
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,...
CVE-2019-9516: Uncontrolled Resource Consumption
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory fo...
CVE-2019-9517: Uncontrolled Resource Consumption
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 byt...
CVE-2019-9515: Uncontrolled Resource Consumption
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-2019-9518: Uncontrolled Resource Consumption
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSHPROMISE. The peer spends ti...
CVE-2019-9514: Uncontrolled Resource Consumption
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-2019-9511: Uncontrolled Resource Consumption
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 ...
CVE-2019-9513: Uncontrolled Resource Consumption
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...
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...