CVSS: 8.1EPSS: 17%CPEs: 52EXPL: 0CVE-2016-5387 – HTTPD: sets environmental variable based on user supplied Proxy request header
https://notcve.org/view.php?id=CVE-2016-5387
The Apache HTTP Server through 2.4.23 follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue. NOTE: the vendor states "This mitigation has been assigned the identifier CVE-2016-5387"; in other words, this is not a CVE ID for a vulnerability. El Apache HTTP Server hasta la versión 2.4.23 sigue a RFC 3875 sección 4.1.18 y por lo tanto no protege aplicaciones de la presencia de datos de clientes no confiables en ambiente variable de HTTP_PROXY, lo que puede permitir a atacantes remotos redireccionar el tráfico HTTP saliente de aplicación a un servidor proxy arbitrario a través de una cabecera Proxy manipulada en una petición HTTP, también conocido como problema "httpoxy". NOTA: el vendedor afirma "Se ha asignado a esta mitigación el identificador CVE-2016-5387"; en otras palabras, esto no es un CVE ID para una vulnerabilidad. It was discovered that httpd used the value of the Proxy header from HTTP requests to initialize the HTTP_PROXY environment variable for CGI scripts, which in turn was incorrectly used by certain HTTP client implementations to configure the proxy for outgoing HTTP requests. • http://lists.opensuse.org/opensuse-updates/2016-07/msg00059.html http://rhn.redhat.com/errata/RHSA-2016-1624.html http://rhn.redhat.com/errata/RHSA-2016-1625.html http://rhn.redhat.com/errata/RHSA-2016-1648.html http://rhn.redhat.com/errata/RHSA-2016-1649.html http://rhn.redhat.com/errata/RHSA-2016-1650.html http://www.debian.org/security/2016/dsa-3623 http://www.kb.cert.org/vuls/id/797896 http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html • CWE-20: Improper Input Validation •
CVSS: 5.9EPSS: 4%CPEs: 2EXPL: 0CVE-2016-1546 – httpd: mod_http2 denial-of-service by thread starvation
https://notcve.org/view.php?id=CVE-2016-1546
The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service (stream-processing outage) via modified flow-control windows. El servidor HTTP Apache 2.4.17 y 2.4.18, cuando mod_http2 está activado, no limita el número de trabajadores de flujo simultáneos para una sola conexión HTTP/2, lo que permite a atacantes remotos provocar una denegación de servicio (corte de flujo de procesamiento) a través de las ventanas de control de flujo modificadas. A denial of service flaw was found in httpd's mod_http2 module. A remote attacker could use this flaw to block server threads for long times, causing starvation of worker threads, by manipulating the flow control windows on streams. • http://httpd.apache.org/security/vulnerabilities_24.html http://svn.apache.org/viewvc?view=revision&revision=1733727 http://www.apache.org/dist/httpd/CHANGES_2.4 http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html http://www.securityfocus.com/bid/92331 https://access.redhat.com/errata/RHSA-2017:1161 https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache&# • CWE-399: Resource Management Errors •
CVSS: 9.1EPSS: 0%CPEs: 3EXPL: 0CVE-2016-4979 – httpd: X509 client certificate authentication bypass using HTTP/2
https://notcve.org/view.php?id=CVE-2016-4979
The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation. El servidor HTTP Apache 2.4.18 hasta la versión 2.4.20, cuando mod_http2 y mod_ssl están activados, no reconoce adecuadamente la directiva "SSLVerifyClient require" para autorización de petición HTTP/2, lo que permite a atacantes remotos eludir las restricciones destinadas al acceso aprovechando la capacidad de enviar múltiples peticiones sobre una sola conexión y abortar una renegociación. A flaw was found in the way httpd performed client authentication using X.509 client certificates. When the HTTP/2 protocol was enabled, a remote attacker could use this flaw to access resources protected by certificate authentication without providing a valid client certificate. • http://httpd.apache.org/security/vulnerabilities_24.html http://packetstormsecurity.com/files/137771/Apache-2.4.20-X509-Authentication-Bypass.html http://seclists.org/fulldisclosure/2016/Jul/11 http://www.apache.org/dist/httpd/CHANGES_2.4 http://www.openwall.com/lists/oss-security/2016/07/05/5 http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html http://www.securityfocus.com/bid/91566 http: • CWE-284: Improper Access Control CWE-287: Improper Authentication •
CVSS: 7.5EPSS: 95%CPEs: 18EXPL: 4CVE-2014-0226 – Apache httpd mod_status Heap Buffer Overflow Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2014-0226
Race condition in the mod_status module in the Apache HTTP Server before 2.4.10 allows remote attackers to cause a denial of service (heap-based buffer overflow), or possibly obtain sensitive credential information or execute arbitrary code, via a crafted request that triggers improper scoreboard handling within the status_handler function in modules/generators/mod_status.c and the lua_ap_scoreboard_worker function in modules/lua/lua_request.c. Condición de carrera en el módulo mod_status en Apache HTTP Server anterior a 2.4.10 permite a atacantes remotos causar una denegación de servicio (desbordamiento de buffer basado en memoria dinámica), o posiblemente obtener información sensible de credenciales o ejecutar código arbitrario, a través de una solicitud manipulada que provoca el manejo indebido de la tabla de clasificación (scoreboard) dentro de la función status_handler en modules/generators/mod_status.c y la función lua_ap_scoreboard_worker en modules/lua/lua_request.c. A race condition flaw, leading to heap-based buffer overflows, was found in the mod_status httpd module. A remote attacker able to access a status page served by mod_status on a server using a threaded Multi-Processing Module (MPM) could send a specially crafted request that would cause the httpd child process to crash or, possibly, allow the attacker to execute arbitrary code with the privileges of the "apache" user. This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apache HTTPD server. • https://www.exploit-db.com/exploits/34133 https://github.com/shreesh1/CVE-2014-0226-poc http://advisories.mageia.org/MGASA-2014-0304.html http://advisories.mageia.org/MGASA-2014-0305.html http://httpd.apache.org/security/vulnerabilities_24.html http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html http://marc.info/?l=bugtraq&m=143403519711434&w=2 http://marc.info/?l=bugtraq&m=143748090628601&w=2 http://marc.info/?l=bugtraq&m=144050155601375&w=2 http&# • CWE-122: Heap-based Buffer Overflow CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 5.0EPSS: 46%CPEs: 76EXPL: 1CVE-2013-5704 – httpd: bypass of mod_headers rules via chunked requests
https://notcve.org/view.php?id=CVE-2013-5704
The mod_headers module in the Apache HTTP Server 2.2.22 allows remote attackers to bypass "RequestHeader unset" directives by placing a header in the trailer portion of data sent with chunked transfer coding. NOTE: the vendor states "this is not a security issue in httpd as such." El módulo mod_headers en el servidor de Apache HTTP 2.2.22 permite a atacantes remotos evadir directivas "RequestHeader unset" mediante la colocación de una cabera en la porción "trailer" de datos enviados con codificación de transferencia fragmentada. NOTA: el proveedor afirma que "esto no es un problema de seguridad en httpd como tal." A flaw was found in the way httpd handled HTTP Trailer headers when processing requests using chunked encoding. • http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.html http://marc.info/?l=apache-httpd-dev&m=139636309822854&w=2 http://marc.info/?l=bugtraq&m=143403519711434&w=2 http://marc.info/?l=bugtraq&m=144493176821532&w=2 http://martin.swende.se/blog/HTTPChunked.html http://rhn.redhat.com/errata/RHSA-2015-0325.html http://rhn.redhat.com/errata/RHSA-2015-1249.html http://rhn.redhat& • CWE-287: Improper Authentication •