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: 5.0EPSS: 0%CPEs: 46EXPL: 0CVE-2015-3184 – subversion: Mixed anonymous/authenticated path-based authz with httpd 2.4
https://notcve.org/view.php?id=CVE-2015-3184
mod_authz_svn in Apache Subversion 1.7.x before 1.7.21 and 1.8.x before 1.8.14, when using Apache httpd 2.4.x, does not properly restrict anonymous access, which allows remote anonymous users to read hidden files via the path name. Vulnerabilidad en mod_authz_svn en Apache Subversion 1.7.x en versiones anteriores a 1.7.21 y 1.8.x en versiones anteriores a 1.8.14, al utilizar Apache httpd 2.4.x, no restringe correctamente el acceso anónimo, lo que permite a usuarios anónimos remotos leer archivos ocultos a través del nombre de la ruta. It was found that the mod_authz_svn module did not properly restrict anonymous access to Subversion repositories under certain configurations when used with Apache httpd 2.4.x. This could allow a user to anonymously access files in a Subversion repository, which should only be accessible to authenticated users. • http://lists.apple.com/archives/security-announce/2016/Mar/msg00003.html http://lists.opensuse.org/opensuse-updates/2015-08/msg00022.html http://rhn.redhat.com/errata/RHSA-2015-1742.html http://subversion.apache.org/security/CVE-2015-3184-advisory.txt http://www.debian.org/security/2015/dsa-3331 http://www.securityfocus.com/bid/76274 http://www.securitytracker.com/id/1033215 http://www.ubuntu.com/usn/USN-2721-1 https://security.gentoo.org/glsa/201610-05 https://support • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-285: Improper Authorization •
CVSS: 4.3EPSS: 0%CPEs: 18EXPL: 0CVE-2015-3185 – httpd: ap_some_auth_required() does not properly indicate authenticated request in 2.4
https://notcve.org/view.php?id=CVE-2015-3185
The ap_some_auth_required function in server/request.c in the Apache HTTP Server 2.4.x before 2.4.14 does not consider that a Require directive may be associated with an authorization setting rather than an authentication setting, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging the presence of a module that relies on the 2.2 API behavior. Vulnerabilidad en la función ap_some_auth_required en ap_some_auth_required del Servidor HTTP Apache en su versión 2.4.x anteriores a la 2.4.14 no considera que una directiva Require puede estar asociada con el establecimiento de una autorización en lugar de un ajuste de autenticación lo cual permite a atacantes remotos evadir las restricciones destinadas al acceso en circunstancias oportunas mediante el aprovechamiento de la presencia de un módulo que se basa en el comportamiento en la API 2.2. It was discovered that in httpd 2.4, the internal API function ap_some_auth_required() could incorrectly indicate that a request was authenticated even when no authentication was used. An httpd module using this API function could consequently allow access that should have been denied. • http://httpd.apache.org/security/vulnerabilities_24.html http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html http://lists.apple.com/archives/security-announce/2015/Sep/msg00002.html http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.html http://lists.opensuse.org/opensuse-updates/2015-10/msg00011.html http://rhn.redhat.com/errata/RHSA-2015-1666.html http://rhn.redhat.com/errata/RHSA-2015-1667.html http://rhn.redhat.com/errata/RHSA-2016-2957.htm • CWE-264: Permissions, Privileges, and Access Controls CWE-287: Improper Authentication •
CVSS: 5.0EPSS: 6%CPEs: 2EXPL: 0CVE-2015-3183 – httpd: HTTP request smuggling attack against chunked request parser
https://notcve.org/view.php?id=CVE-2015-3183
The chunked transfer coding implementation in the Apache HTTP Server before 2.4.14 does not properly parse chunk headers, which allows remote attackers to conduct HTTP request smuggling attacks via a crafted request, related to mishandling of large chunk-size values and invalid chunk-extension characters in modules/http/http_filters.c. Vulnerabilidad en la implementación de la codificación de transferencia fragmentada en el Servidor HTTP Apache en versiones anteriores a la 2.4.14 no analiza adecuadamente los fragmentos de las cabeceras lo cual permite a atacantes remotos efectuar ataques de infiltración de solicitudes HTTP a través de peticiones manipuladas, relacionada con el mal manejo de los valores fragmentados de gran tamaño y extensiones fragmentadas no válidas en modules/http/http_filters.c. Multiple flaws were found in the way httpd parsed HTTP requests and responses using chunked transfer encoding. A remote attacker could use these flaws to create a specially crafted request, which httpd would decode differently from an HTTP proxy software in front of it, possibly leading to HTTP request smuggling attacks. • http://httpd.apache.org/security/vulnerabilities_24.html http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10735 http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.html http://lists.opensuse.org/opensuse-updates/2015-10/msg00011.html http://marc.info/?l=bugtraq&m=144493176821532&w=2 http://rhn.redhat.com/errata/RHSA-2015-1666.html http://rhn.redhat.com/errata/RHSA-2015-1667.html http&# • CWE-17: DEPRECATED: Code CWE-20: Improper Input Validation CWE-172: Encoding Error •