CVE-2024-45397 H2O alllows bypassing address-based access control with 0-RTT

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. When an HTTP request using TLS/1.3 early data on top of TCP Fast Open or QUIC 0-RTT packets is received and the IP-address-based access control is used, the access control does not detect and prohibit HTTP requests conveyed by...

CVE-2024-25622 H2O ignores headers configuration directives

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The configuration directives provided by the headers handler allows users to modify the response headers being sent by h2o. The configuration file of h2o has scopes, and the inner scopes e.g., path level are expected to inherit t...

CVE-2024-25622 H2O ignores headers configuration directives

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The configuration directives provided by the headers handler allows users to modify the response headers being sent by h2o. The configuration file of h2o has scopes, and the inner scopes e.g., path level are expected to inherit t...

PT-2024-31601

Name of the Vulnerable Software and Affected Versions: h2o affected versions not specified Description: The issue concerns an HTTP server that supports various HTTP versions. When specific conditions are met, such as receiving an HTTP request using TLS/1.3 early data on top of TCP Fast Open or QU...

PT-2024-31607 · H2O · H2O

Name of the Vulnerable Software and Affected Versions: h2o versions prior to the version containing commit 1ed32b2 Description: The issue affects h2o, an HTTP server that supports HTTP/1.x, HTTP/2, and HTTP/3. When configured as a reverse proxy, h2o may crash due to an assertion failure if HTTP/3...

h2o Resource Management Error Vulnerability

h2o is a new generation of HTTP server. Not only is it very fast compared to older generation HTTP servers, but it also provides faster responses to end users. A resource management error vulnerability exists in h2o-3 version 3.46.0. An attacker exploiting this vulnerability could cause the serve...

h2o 安全漏洞

h2o is a new generation of HTTP server. Not only is it very fast compared to older generation HTTP servers, but it also provides faster responses to end users. A security vulnerability exists in h2o that stems from the vulnerability of the application to unauthorized takeover...

DEBIAN-CVE-2023-41337

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. In version 2.3.0-beta2 and prior, when h2o is configured to listen to multiple addresses or ports with each of them using different backend servers managed by multiple entities, a malicious backend entity that also has the...

UBUNTU-CVE-2023-41337

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. In version 2.3.0-beta2 and prior, when h2o is configured to listen to multiple addresses or ports with each of them using different backend servers managed by multiple entities, a malicious backend entity that also has the...

Memory corruption

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The QUIC stack quicly, as used by H2O up to commit 43f86e5 in version 2.3.0-beta and prior, is susceptible to a state exhaustion attack. When H2O is serving HTTP/3, a remote attacker can exploit this vulnerability to progressivel...

h2o data forgery problem vulnerability

h2o is a new generation of HTTP server. Not only is it very fast compared to older generation HTTP servers, but it also provides faster response to end users. A data forgery issue vulnerability exists in h2o 2.3.0-beta2 and earlier versions, which arises from an opportunity for a malicious backen...

h2o Security Vulnerabilities

h2o is a new generation of HTTP server. Not only is it very fast compared to older generation HTTP servers, but it also provides faster responses to end users. A security vulnerability exists in versions prior to h2o 43f86e5 that stems from the application's use of the QUIC stack, which can be...

CVE-2023-6016

An attacker is able to gain remote code execution on a server hosting the H2O dashboard through it's POJO model import feature...

CVE-2023-30847

H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP...

UBUNTU-CVE-2023-30847

H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP...

CVE-2023-30847 H2O vulnerable to read from uninitialized pointer in the reverse proxy handler

H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP...

PT-2023-23002 · H2O · H2O

Name of the Vulnerable Software and Affected Versions: H2O versions 2.3.0-beta2 and prior Description: H2O is an HTTP server. When the reverse proxy handler tries to process a certain type of invalid HTTP request, it tries to build an upstream URL by reading from an uninitialized pointer. This...

SUSE CVE-2017-10872

H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via unspecified vectors...

SUSE CVE-2017-10868

H2O version 2.2.2 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/1 header...

CVE-2021-43848

h2o is an open source http server. In code prior to the 8c0eca3 commit h2o may attempt to access uninitialized memory. When receiving QUIC frames in certain order, HTTP/3 server-side implementation of h2o can be misguided to treat uninitialized memory as HTTP/3 frames that have been received. Whe...