New HTTP/2 Vulnerability Exposes Web Servers to DoS Attacks

New research has found that the CONTINUATION frame in the HTTP/2 protocol can be exploited to conduct denial-of-service DoS attacks. The technique has been codenamed HTTP/2 CONTINUATION Flood by security researcher Bartek Nowotarski, who reported the issue to the CERT Coordination Center CERT/CC ...

Denial Of Service (DoS)

amphp/http-client is vulnerable to Denial Of Service. The vulnerability is due to unbounded buffering of HTTP/2 CONTINUATION frames until the ENDHEADERS flag is received, which results in a memory exhaustion crash...

Slackware Linux 15.0 / current httpd Multiple Vulnerabilities (SSA:2024-095-01)

The version of httpd installed on the remote host is prior to 2.4.59. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2024-095-01 advisory. - Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP...

forgejo -- HTTP/2 CONTINUATION flood in net/http

[email protected] reports: An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's heade...

CVE-2024-27919: Detection of Error Condition Without Action

Envoy is a cloud-native, open-source edge and service proxy. In versions 1.29.0 and 1.29.1, theEnvoy HTTP/2 protocol stack is vulnerable to the flood of CONTINUATION frames. Envoy's HTTP/2 codec does not reset a request when header map limits have been exceeded. This allows an attacker to send an...

CVE-2024-28182

nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps reading the unbounded number of HTTP/2 CONTINUATION frames even after a stream is reset to keep HPACK context in sync. This causes excessive CPU usage to decode HPACK...

CVE-2024-30255: Detection of Error Condition Without Action

Envoy is a cloud-native, open source edge and service proxy. The HTTP/2 protocol stack in Envoy versions prior to 1.29.3, 1.28.2, 1.27.4, and 1.26.8 are vulnerable to CPU exhaustion due to flood of CONTINUATION frames. Envoy's HTTP/2 codec allows the client to send an unlimited number of...

CVE-2024-27316: Allocation of Resources Without Limits or Throttling

HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion...

Node.js Multiple Vulnerabilities (Apr 2024) - Mac OS X

Node.js is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2024 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...

Node.js Multiple Vulnerabilities (Apr 2024) - Windows

Node.js is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2024 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...

PT-2024-3493

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 125 Firefox ESR versions prior to 115.10 Thunderbird versions prior to 115.10 Description The issue is related to the implementation of the HTTP/2 protocol in the affected browsers, where there was no limit to the...

CVE-2023-45288: Undefined Security Weakness

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no...

Golang < 1.21.9, 1.22.x < 1.22.2 DoS

The version of Golang running on the remote host is prior to 1.21.9 or 1.22.x prior to 1.22.2. It is, therefore, is affected by a denial of service vulnerability. When a request's headers exceed MaxHeaderBytes, memory is not allocated to store the excess headers yet they are still parsed. This...

Apache httpd -- multiple vulnerabilities

The Apache httpd project reports: HTTP/2 DoS by memory exhaustion on endless continuation frames HTTP Response Splitting in multiple modules...

Slackware Linux 15.0 / current nghttp2 Vulnerability (SSA:2024-095-02)

The version of nghttp2 installed on the remote host is prior to 1.61.0. It is, therefore, affected by a vulnerability as referenced in the SSA:2024-095-02 advisory. - nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps...

Apache 2.4.x < 2.4.59 Multiple Vulnerabilities

The version of Apache httpd installed on the remote host is prior to 2.4.59. It is, therefore, affected by multiple vulnerabilities as referenced in the 2.4.59 advisory. - Apache HTTP Server: HTTP Response Splitting in multiple modules: HTTP Response splitting in multiple modules in Apache HTTP...

GO-2024-2687 HTTP/2 CONTINUATION flood in net/http

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no...

CVE-2023-45288

A vulnerability was discovered with the implementation of the HTTP/2 protocol in the Go programming language. There were insufficient limitations on the amount of CONTINUATION frames sent within a single stream. An attacker could potentially exploit this to cause a Denial of Service DoS attack...

CVE-2024-30255

A vulnerability was found in how Envoy Proxy implements the HTTP/2 codec. There are insufficient limitations placed on the amount of CONTINUATION frames that can be sent within a single stream. This issue could allow an unauthenticated remote attacker to send packets to vulnerable servers, which...

CVE-2024-31309

A vulnerability was found in how Apache Traffic Server implements the HTTP/2 protocol. There are insufficient limitations placed on the amount of CONTINUATION frames that can be sent within a single stream. This issue could allow an unauthenticated remote attacker to send packets to vulnerable...