CVSS: 7.5EPSS: 83%CPEs: 444EXPL: 7CVE-2023-44487 – HTTP/2 Rapid Reset Attack Vulnerability
https://notcve.org/view.php?id=CVE-2023-44487
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 2023. El protocolo HTTP/2 permite una denegación de servicio (consumo de recursos del servidor) porque la cancelación de solicitudes puede restablecer muchas transmisiones rápidamente, como se explotó en la naturaleza entre agosto y octubre de 2023. A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RST_STREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any server-side limit for the maximum number of active streams per connection, resulting in a denial of service due to server resource consumption. • https://github.com/imabee101/CVE-2023-44487 https://github.com/studiogangster/CVE-2023-44487 https://github.com/bcdannyboy/CVE-2023-44487 https://github.com/sigridou/CVE-2023-44487- https://github.com/ByteHackr/CVE-2023-44487 https://github.com/ReToCode/golang-CVE-2023-44487 http://www.openwall.com/lists/oss-security/2023/10/13/4 http://www.openwall.com/lists/oss-security/2023/10/13/9 http://www.openwall.com/lists/oss-security/2023/10/18/4 http://www. • CWE-400: Uncontrolled Resource Consumption •
CVSS: 8.2EPSS: 0%CPEs: 3EXPL: 0CVE-2023-30847 – H2O vulnerable to read from uninitialized pointer in the reverse proxy handler
https://notcve.org/view.php?id=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 servers. Pull request number 3229 fixes the issue. The pull request has been merged to the `master` branch in commit f010336. • https://github.com/h2o/h2o/commit/f010336bab162839df43d9e87570897466c97e33 https://github.com/h2o/h2o/pull/3229 https://github.com/h2o/h2o/security/advisories/GHSA-p5hj-phwj-hrvx • CWE-824: Access of Uninitialized Pointer •
CVSS: 7.4EPSS: 0%CPEs: 1EXPL: 0CVE-2021-43848 – Unititialized memory access in h2o
https://notcve.org/view.php?id=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. When h2o is used as a reverse proxy, an attacker can abuse this vulnerability to send internal state of h2o to backend servers controlled by the attacker or third party. Also, if there is an HTTP endpoint that reflects the traffic sent from the client, an attacker can use that reflector to obtain internal state of h2o. • https://github.com/h2o/h2o/commit/8c0eca3 https://github.com/h2o/h2o/security/advisories/GHSA-f9xw-j925-m4m4 • CWE-908: Use of Uninitialized Resource •
CVSS: 9.8EPSS: 3%CPEs: 1EXPL: 0CVE-2018-0608
https://notcve.org/view.php?id=CVE-2018-0608
Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors. Desbordamiento de búfer en H2O, en versiones 2.2.4 y anteriores, permite que atacantes remotos ejecuten código arbitrario o provoquen una denegación de servicio (DoS) mediante vectores sin especificar. • http://jvn.jp/en/jp/JVN93226941/index.html https://github.com/h2o/h2o/issues/1775 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-10868
https://notcve.org/view.php?id=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. H2O en sus versiones 2.2.2 y anteriores permite que atacantes remotos provoquen una denegación de servicio (DoS) en el servidor mediante cabeceras HTTP/1 especialmente manipuladas. • https://github.com/h2o/h2o/issues/1459 https://jvn.jp/en/jp/JVN84182676/index.html • CWE-20: Improper Input Validation •