CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 2CVE-2024-27316 – Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames
https://notcve.org/view.php?id=CVE-2024-27316
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. Los encabezados entrantes HTTP/2 que exceden el límite se almacenan temporalmente en nghttp2 para generar una respuesta HTTP 413 informativa. Si un cliente no deja de enviar encabezados, esto provoca que se agote la memoria. A vulnerability was found in how Apache httpd implements the HTTP/2 protocol. • https://github.com/lockness-Ko/CVE-2024-27316 https://github.com/aeyesec/CVE-2024-27316_poc http://www.openwall.com/lists/oss-security/2024/04/04/4 https://httpd.apache.org/security/vulnerabilities_24.html https://www.openwall.com/lists/oss-security/2024/04/03/16 https://support.apple.com/kb/HT214119 http://seclists.org/fulldisclosure/2024/Jul/18 https://access.redhat.com/security/cve/CVE-2024-27316 https://bugzilla.redhat.com/show_bug.cgi?id=2268277 • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.5EPSS: 2%CPEs: 2EXPL: 0CVE-2023-31122 – Apache HTTP Server: mod_macro buffer over-read
https://notcve.org/view.php?id=CVE-2023-31122
Out-of-bounds Read vulnerability in mod_macro of Apache HTTP Server.This issue affects Apache HTTP Server: through 2.4.57. Vulnerabilidad de lectura fuera de límites en mod_macro del servidor Apache HTTP. Este problema afecta al servidor Apache HTTP: hasta 2.4.57. A flaw was found in the mod_macro module of httpd. When processing a very long macro, the null byte terminator will not be added, leading to an out-of-bounds read, resulting in a crash. • https://httpd.apache.org/security/vulnerabilities_24.html https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TI3V2YCEUM65QDYPGGNUZ7UONIM5OEXC https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VZJTT5TEFNSBWVMKCLS6EZ7PI6EJYBCO https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFDNHDH4VLFGDPY6MEZV2RO5N5FLFONW https://security.netapp.com/advisory/ntap-20231027&# • CWE-125: Out-of-bounds Read •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1CVE-2023-43622 – Apache HTTP Server: DoS in HTTP/2 with initial windows size 0
https://notcve.org/view.php?id=CVE-2023-43622
An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known "slow loris" attack pattern. This has been fixed in version 2.4.58, so that such connection are terminated properly after the configured connection timeout. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.57. Users are recommended to upgrade to version 2.4.58, which fixes the issue. Un atacante, al abrir una conexión HTTP/2 con un tamaño de ventana inicial de 0, pudo bloquear el manejo de esa conexión indefinidamente en el servidor HTTP Apache. Esto podría usarse para agotar los recursos de los trabajadores en el servidor, similar al conocido patrón de ataque "slow loris". Esto se solucionó en la versión 2.4.58, de modo que dicha conexión finalice correctamente después del tiempo de espera de conexión configurado. • https://github.com/visudade/CVE-2023-43622 https://httpd.apache.org/security/vulnerabilities_24.html https://security.netapp.com/advisory/ntap-20231027-0011 https://access.redhat.com/security/cve/CVE-2023-43622 https://bugzilla.redhat.com/show_bug.cgi?id=2245153 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2023-45802 – Apache HTTP Server: HTTP/2 stream memory not reclaimed right away on RST
https://notcve.org/view.php?id=CVE-2023-45802
When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close, all resources were reclaimed, but the process might run out of memory before that. This was found by the reporter during testing of CVE-2023-44487 (HTTP/2 Rapid Reset Exploit) with their own test client. During "normal" HTTP/2 use, the probability to hit this bug is very low. • https://httpd.apache.org/security/vulnerabilities_24.html https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX https://security.netapp.com/advisory/ntap-20231027&# • CWE-400: Uncontrolled Resource Consumption CWE-404: Improper Resource Shutdown or Release •
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 •