CVSS: 7.5EPSS: 0%CPEs: 16EXPL: 0CVE-2018-8777 – ruby: DoS by large request in WEBrick
https://notcve.org/view.php?id=CVE-2018-8777
In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption). En Ruby, en versiones anteriores a la 2.2.10, versiones 2.3.x anteriores a la 2.3.7, versiones 2.4.x anteriores a la 2.4.4, versiones 2.5.x anteriores a la 2.5.1 y la versión 2.6.0-preview1, un atacante puede pasar una petición HTTP larga con una cabecera manipulada al servidor WEBrick o un cuerpo manipulado al servidor/manipulador WEBrick y provocar una denegación de servicio (consumo de memoria). It was found that WEBrick could be forced to use an excessive amount of memory during the processing of HTTP requests, leading to a Denial of Service. An attacker could use this flaw to send huge requests to a WEBrick application, resulting in the server running out of memory. • http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html http://www.securityfocus.com/bid/103683 http://www.securitytracker.com/id/1042004 https://access.redhat.com/errata/RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2019:2028 https://access.redhat.com/errata/RHSA-2020:0542 https://access.redhat.com/errata/RHSA-2020:0591 https://access.redhat.com/errata&#x • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.5EPSS: 2%CPEs: 36EXPL: 0CVE-2017-15710 – httpd: Out of bounds write in mod_authnz_ldap when using too small Accept-Language values
https://notcve.org/view.php?id=CVE-2017-15710
In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all. • http://www.openwall.com/lists/oss-security/2018/03/24/8 http://www.securityfocus.com/bid/103512 http://www.securitytracker.com/id/1040569 https://access.redhat.com/errata/RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2019:0366 https://access.redhat.com/errata/RHSA-2019:0367 https://httpd.apache.org/security/vulnerabilities_24.html https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.ht • CWE-787: Out-of-bounds Write •
CVSS: 5.9EPSS: 1%CPEs: 18EXPL: 0CVE-2018-1301 – httpd: Out of bounds access after failure in reading the HTTP request
https://notcve.org/view.php?id=CVE-2018-1301
A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.30, due to an out of bound access after a size limit is reached by reading the HTTP header. This vulnerability is considered very hard if not impossible to trigger in non-debug mode (both log and build level), so it is classified as low risk for common server usage. Una petición especialmente manipulada podría haber provocado el cierre inesperado del servidor Apache HTTP en versiones anteriores a la 2.4.30, debido a un acceso fuera de límites tras alcanzar un límite de tamaño mediante la lectura de una cabecera HTTP. Esta vulnerabilidad se considera crítica si no es imposible desencadenarla en un modo que no sea de depuración (tanto a nivel de log como de build), por lo que se clasifica como vulnerabilidad de riesgo bajo para un uso común del servidor. • http://www.openwall.com/lists/oss-security/2018/03/24/2 http://www.securityfocus.com/bid/103515 http://www.securitytracker.com/id/1040573 https://access.redhat.com/errata/RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2019:0366 https://access.redhat.com/errata/RHSA-2019:0367 https://httpd.apache.org/security/vulnerabilities_24.html https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.ht • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-125: Out-of-bounds Read •
CVSS: 9.8EPSS: 1%CPEs: 39EXPL: 0CVE-2018-1312 – httpd: Weak Digest auth nonce generation in mod_auth_digest
https://notcve.org/view.php?id=CVE-2018-1312
In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection. En Apache httpd, en versiones desde la 2.2.0 hasta la 2.4.29, cuando se genera un desafío de autenticación HTTP Digest, el nonce enviado para evitar ataques replay no se generó correctamente empleando una semilla pseudoaleatoria. En un clúster de servidores, utilizando una configuración de autenticación Digest común, las peticiones HTTP se podrían reemplazar en los servidores por un atacante si que este sea detectado. • http://www.openwall.com/lists/oss-security/2018/03/24/7 http://www.securityfocus.com/bid/103524 http://www.securitytracker.com/id/1040571 https://access.redhat.com/errata/RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2019:0366 https://access.redhat.com/errata/RHSA-2019:0367 https://access.redhat.com/errata/RHSA-2019:1898 https://httpd.apache.org/security/vulnerabilities_24.html https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd. • CWE-287: Improper Authentication CWE-305: Authentication Bypass by Primary Weakness •
CVSS: 8.1EPSS: 95%CPEs: 16EXPL: 1CVE-2017-15715 – httpd: <FilesMatch> bypass with a trailing newline in the file name
https://notcve.org/view.php?id=CVE-2017-15715
In Apache httpd 2.4.0 to 2.4.29, the expression specified in <FilesMatch> could match '$' to a newline character in a malicious filename, rather than matching only the end of the filename. This could be exploited in environments where uploads of some files are are externally blocked, but only by matching the trailing portion of the filename. En las versiones 2.4.0 hasta la 2.4.29 de Apache httpd, la expresión especificada en podría unir "$" con un carácter nueva línea o newline en un nombre de archivo malicioso, en lugar de interpretarse, únicamente, como el final del nombre de archivo. Esto se podría explotar en entornos donde las subidas de algunos archivos están bloqueadas de manera externa, pero solo uniendo la porción final del nombre del archivo. • https://github.com/whisp1830/CVE-2017-15715 http://www.openwall.com/lists/oss-security/2018/03/24/6 http://www.securityfocus.com/bid/103525 http://www.securitytracker.com/id/1040570 https://access.redhat.com/errata/RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2019:0366 https://access.redhat.com/errata/RHSA-2019:0367 https://httpd.apache.org/security/vulnerabilities_24.html https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache& • CWE-20: Improper Input Validation CWE-787: Out-of-bounds Write •