CVSS: 5.3EPSS: 0%CPEs: 1EXPL: 1CVE-2024-28182 – Reading unbounded number of HTTP/2 CONTINUATION frames to cause excessive CPU usage
https://notcve.org/view.php?id=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 stream. nghttp2 v1.61.0 mitigates this vulnerability by limiting the number of CONTINUATION frames it accepts per stream. There is no workaround for this vulnerability. nghttp2 es una implementación del protocolo de transferencia de hipertexto versión 2 en C. La librería nghttp2 anterior a la versión 1.61.0 sigue leyendo el número ilimitado de tramas de CONTINUACIÓN HTTP/2 incluso después de que se restablece una secuencia para mantener sincronizado el contexto HPACK. • https://github.com/lockness-Ko/CVE-2024-27316 http://www.openwall.com/lists/oss-security/2024/04/03/16 https://github.com/nghttp2/nghttp2/commit/00201ecd8f982da3b67d4f6868af72a1b03b14e0 https://github.com/nghttp2/nghttp2/commit/d71a4668c6bead55805d18810d633fbb98315af9 https://github.com/nghttp2/nghttp2/security/advisories/GHSA-x6x3-gv8h-m57q https://lists.debian.org/debian-lts-announce/2024/04/msg00026.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AGOME6ZXJG7664IPQNVE3DL67E • CWE-390: Detection of Error Condition Without Action CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.5EPSS: 81%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: 7.5EPSS: 0%CPEs: 5EXPL: 0CVE-2023-35945 – Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec
https://notcve.org/view.php?id=CVE-2023-35945
Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. • https://github.com/envoyproxy/envoy/security/advisories/GHSA-jfxv-29pc-x22r https://github.com/nghttp2/nghttp2/blob/e7f59406556c80904b81b593d38508591bb7523a/lib/nghttp2_session.c#L3346 https://access.redhat.com/security/cve/CVE-2023-35945 https://bugzilla.redhat.com/show_bug.cgi?id=2217983 • CWE-400: Uncontrolled Resource Consumption CWE-459: Incomplete Cleanup •
CVSS: 7.5EPSS: 1%CPEs: 23EXPL: 0CVE-2020-11080 – Denial of service in nghttp2
https://notcve.org/view.php?id=CVE-2020-11080
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html https://github.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f75090 https://github.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870af394 https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject& • CWE-400: Uncontrolled Resource Consumption CWE-707: Improper Neutralization CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.5EPSS: 4%CPEs: 6EXPL: 0CVE-2018-1000168 – nghttp2: Null pointer dereference when too large ALTSVC frame is received
https://notcve.org/view.php?id=CVE-2018-1000168
nghttp2 version >= 1.10.0 and nghttp2 <= v1.31.0 contains an Improper Input Validation CWE-20 vulnerability in ALTSVC frame handling that can result in segmentation fault leading to denial of service. This attack appears to be exploitable via network client. This vulnerability appears to have been fixed in >= 1.31.1. nghttp2 hasta la versión 1.10.0 y nghttp2 en versiones 1.31.0 y anteriores contienen una vulnerabilidad de validación incorrecta de entradas (CWE-20) en la gestión de tramas ALTSVC que puede resultar en un fallo de segmentación, lo que provoca una denegación de servicio (DoS). Este ataque parece ser explotable mediante un cliente de red. La vulnerabilidad parece haber sido solucionada en la versión 1.31.1 y posteriores. • http://www.securityfocus.com/bid/103952 https://access.redhat.com/errata/RHSA-2019:0366 https://access.redhat.com/errata/RHSA-2019:0367 https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1 https://nodejs.org/en/blog/vulnerability/june-2018-security-releases https://access.redhat.com/security/cve/CVE-2018-1000168 https://bugzilla.redhat.com/show_bug.cgi?id=1565035 • CWE-20: Improper Input Validation CWE-476: NULL Pointer Dereference •