Denial Of Service (DoS)

Libraries that implement HTTP/2 are vulnerable to Denial Of Service DoS. The vulnerability could be exploited by attackers via sending a large number of HTTP/2 requests to a vulnerable server, then canceling them, causing the server to consume excessive resources and become unavailable to...

HTTP2 Zero-Day Exploited for the Most Explosive DDoS Attacks

Threat Level Vulnerability Report For a detailed threat advisory, download the pdf file here Summary A zero-day vulnerability in HTTP/2 has been actively exploited in August, introducing a novel DDoS technique referred as "Rapid Reset". The attack, utilizing CVE-2023-44487, exploits a vulnerabili...

Eclipse Jetty HTTP/2 HPACK DoS Vulnerability (GHSA-wgh7-54f2-x98r) - Windows

Eclipse Jetty is prone to a denial of service DoS vulnerability. SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:eclipse:jetty";...

Eclipse Jetty HTTP/2 HPACK DoS Vulnerability (GHSA-wgh7-54f2-x98r) - Linux

Eclipse Jetty is prone to a denial of service DoS vulnerability. SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:eclipse:jetty";...

Node.js 18.x < 18.18.2, 20.x < 20.8.1 Multiple Vulnerabilities - Windows

Node.js is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:nodejs:node.js"; ifdescription...

Security Updates for Microsoft ASP.NET Core (October 2023)

The version of ASP.NET core installed on the remote host is affected by a denial of service DoS vulnerability. The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October...

Debian: Security Advisory (DSA-5522-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Eclipse Jetty HTTP/2 Protocol DoS Vulnerability (CVE-2023-44487) - Windows

Eclipse Jetty is prone to a denial of service DoS vulnerability in the HTTP/2 protocol. SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

Apache Tomcat 9.0.70 < 9.0.81 Multiple Vulnerabilities

The version of Apache Tomcat installed on the remote host is 8.5.85 to 8.5.93, 9.0.70 to 9.0.80, 10.1.0-M1 to 10.1.13 or 11.0.0-M1 to 11.0.0-M11. It is, therefore, affected by multiple vulnerabilities : - Tomcat did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer...

Eclipse Jetty HTTP/2 Protocol DoS Vulnerability (CVE-2023-44487) - Linux

Eclipse Jetty is prone to a denial of service DoS vulnerability in the HTTP/2 protocol. SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

Node.js 18.x < 18.18.2, 20.x < 20.8.1 Multiple Vulnerabilities - Mac OS X

Node.js is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:nodejs:node.js"; ifdescription...

nghttp2 < 1.57.0 HTTP/2 Protocol DoS Vulnerability

nghttpd2 is prone to a denial of service DoS vulnerability in the HTTP/2 protocol. SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

H2O HTTP Server HTTP/2 Protocol DoS Vulnerability (GHSA-2m7v-gc89-fjqf)

H2O is prone to a denial of service DoS vulnerability in the HTTP/2 protocol. SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

What to know about the HTTP/2 Rapid Reset DDoS attacks

Cisco Talos is actively tracking the novel distributed denial-of-service DDoS attacks cloud services provider Cloudflare disclosed earlier this week. The techniques described in Cloudflares blog post resulted in a record-breaking DDoS attack and could facilitate much larger attacks in the future...

CVE-2023-39325

A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a ne...

AZL-34544 CVE-2023-39325 affecting package application-gateway-kubernetes-ingress for versions less than 1.7.7-1

A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a ne...

CVE-2023-39325

A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a ne...

Design/Logic Flaw

A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a ne...

CVE-2023-39325 HTTP/2 rapid reset can cause excessive work in net/http

A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a ne...

CVE-2023-39325

CVE-2023-39325 describes a DoS in HTTP/2 handling where a malicious client rapidly creates and resets requests, potentially exhausting server resources. The fix tightens per-connection concurrency handling: servers bound the number of executing handler goroutines to the stream-concurrency limit (...