httpd: mod_http2: DoS via slow, unneeded request bodies

In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 modhttp2 connections...

httpd: mod_http2: DoS via slow, unneeded request bodies

In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 modhttp2 connections...

httpd: mod_http2: read-after-free on a string compare

A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly...

The vulnerability of the HTTP/2 web server protocol of the Apache Traffic Server, a Node.js-based software platform, stems from a lack of resource consumption control mechanisms. This allows attackers to trigger service interruptions.

The vulnerability of the HTTP/2 web server protocol of the Apache Traffic Server, a Node.js-based software platform, is related to errors in the resource consumption control mechanism. Exploiting this vulnerability can allow an attacker to cause service interruptions through a specially crafted...

HTTP/2: flood using SETTINGS frames results in unbounded memory growth

A flaw was found in HTTP/2. Using SETTINGS frames and queuing of SETTINGS ACK frames, a flood could occur resulting in unbounded memory growth. The highest threat from this vulnerability is to system availability...

HTTP/2: flood using PRIORITY frames results in excessive resource consumption

A flaw was found in HTTP/2. An attacker, using PRIORITY frames to flood the system, could cause excessive CPU usage and starvation of other clients. The largest threat from this vulnerability is to system availability...

HTTP/2: flood using PING frames results in unbounded memory growth

A flaw was found in HTTP/2. Using PING frames and queuing of response PING ACK frames, a flood attack could occur resulting in unbounded memory growth. The highest threat from this vulnerability is to system availability...

HTTP/2: 0-length headers lead to denial of service

A flaw was found in HTTP/2. An attacker, sending a stream of header with a 0-length header name and a 0-length header value, could cause some implementations to allocate memory for these headers and keep the allocations alive until the session dies. The can consume excess memory, potentially...

HTTP/2: flood using SETTINGS frames results in unbounded memory growth

A flaw was found in HTTP/2. Using SETTINGS frames and queuing of SETTINGS ACK frames, a flood could occur resulting in unbounded memory growth. The highest threat from this vulnerability is to system availability...

HTTP/2: request for large response leads to denial of service

A vulnerability was found in HTTP/2. An attacker can open a HTTP/2 window so the peer can send without constraint. The TCP window remains closed so the peer cannot write the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the server's...

HTTP/2: flood using PRIORITY frames results in excessive resource consumption

A flaw was found in HTTP/2. An attacker, using PRIORITY frames to flood the system, could cause excessive CPU usage and starvation of other clients. The largest threat from this vulnerability is to system availability...

HTTP/2: flood using PING frames results in unbounded memory growth

A flaw was found in HTTP/2. Using PING frames and queuing of response PING ACK frames, a flood attack could occur resulting in unbounded memory growth. The highest threat from this vulnerability is to system availability...

USN-4128-2 tomcat9 vulnerabilities

It was discovered that the Tomcat 9 SSI printenv command echoed user provided data without escaping it. An attacker could possibly use this issue to perform an XSS attack. CVE-2019-0221 It was discovered that Tomcat 9 did not address HTTP/2 connection window exhaustion on write while addressing...

HTTP/2: flood using HEADERS frames results in unbounded memory growth

A flaw was found in HTTP/2. Using HEADER frames with invalid HTTP headers and queuing of response RSTSTREAM frames, an attacker could cause a flood resulting in unbounded memory growth. The highest threat from this vulnerability is to system availability...

USN-4128-1 tomcat8 vulnerabilities

It was discovered that the Tomcat 8 SSI printenv command echoed user provided data without escaping it. An attacker could possibly use this issue to perform an XSS attack. CVE-2019-0221 It was discovered that Tomcat 8 did not address HTTP/2 connection window exhaustion on write while addressing...

HTTP/2: large amount of data requests leads to denial of service

A flaw was found in HTTP/2. An attacker can request a large amount of data by manipulating window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this queue can consume excess CPU, memory, or both, leading to a...

USN-4113-1 apache2 vulnerabilities

Stefan Eissing discovered that the HTTP/2 implementation in Apache did not properly handle upgrade requests from HTTP/1.1 to HTTP/2 in some situations. A remote attacker could use this to cause a denial of service daemon crash. This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04...

The vulnerability relates to the implementation of the HTTP/2 network protocol on Windows operating systems, Apache Traffic Server web servers, H2O web servers, network programming tools such as netty, SwiftNIO, Envoy, and the Node.js software platform. This allows attackers to induce service failures.

The vulnerability of the HTTP/2 network protocol implementation in Windows operating systems, Apache Traffic Server web servers, H2O web servers, network programming tools such as netty, SwiftNIO, Envoy, and Node.js software platforms is related to an uncontrolled resource consumption. Exploiting...

The vulnerability relates to the implementation of the HTTP/2 network protocol on Windows operating systems, nginx servers, network programming tools like netty, Envoy, SwiftNIO, and Node.js software platforms. This allows attackers to induce service failures.

The vulnerability of the HTTP/2 network protocol implementation in Windows operating systems, nginx servers, network programming tools like Netty, Envoy, SwiftNIO, and Node.js software platforms is related to an uncontrolled resource consumption. Exploiting this vulnerability can allow a maliciou...

ALPINE-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...