CVSS: 6.8EPSS: 1%CPEs: 135EXPL: 1CVE-2013-0339
https://notcve.org/view.php?id=CVE-2013-0339
libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE. libxml2 hasta 2.9.1 no controla correctamente la expansión de entidades externas a menos que un desarrollador de aplicaciones utilice la función xmlSAX2ResolveEntity o xmlSetExternalEntityLoader, lo que permite a atacantes remotos provocar una denegación de servicio (consumo de recursos), enviar peticiones HTTP a los servidores de la intranet, o leer ficheros arbitrarios mediante un documento XML manipulada, también conocido una entidades externas XML (XXE) tema. NOTA: se podría argumentar que debido a que libxml2 ya ofrece la posibilidad de desactivar la expansión entidad externa, la responsabilidad de la solución de este problema se encuentra con los desarrolladores de aplicaciones, de acuerdo con este argumento, esta entrada debe ser rechazada y cada aplicación afectada tendría su propio CVE. • http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html http://openwall.com/lists/oss-security/2013/02/21/24 http://openwall.com/lists/oss-security/2013/02/22/3 http://seclists.org/oss-sec/2013/q4/182 http://seclists.org/oss-sec/2013/q4/184 http://seclists.org/oss-sec/2013/q4/188 http://secunia.com/advisories/52662 http://secunia.com/advisories/54172 http://secunia.com/advisories/55568 http://www.debian.org/security/2013/dsa-2652 • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 4.3EPSS: 1%CPEs: 134EXPL: 0CVE-2013-0338 – libxml2: CPU consumption DoS when performing string substitutions during entities expansion
https://notcve.org/view.php?id=CVE-2013-0338
libxml2 2.9.0 and earlier allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via an XML file containing an entity declaration with long replacement text and many references to this entity, aka "internal entity expansion" with linear complexity. libxml2 v2.9.0 y anteriores permite a atacantes dependientes de contexto provocar una denegación de servicio (consumo de memoria y CPU) a través de un archivo XML que contiene una declaración de la entidad con el nuevo texto largo y muchas referencias a esta entidad, también conocido como "expansión entidad interna" con complejidad lineal. • http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html http://lists.opensuse.org/opensuse-updates/2013-03/msg00112.html http://lists.opensuse.org/opensuse-updates/2013-03/msg00114.html http://marc.info/?l=bugtraq&m=142798889927587&w=2 http://secunia.com/advisories/52662 http://secunia.com/advisories/55568 http://www.debian.org/security/2013/dsa-2652 http://www.mandriva.com/security/advisories?name=MDVSA-2013:056 http://www.oracle.com/technetwork/topics/security&#x • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 6.8EPSS: 4%CPEs: 226EXPL: 0CVE-2012-5134 – libxml2: Heap-buffer-underflow in xmlParseAttValueComplex
https://notcve.org/view.php?id=CVE-2012-5134
Heap-based buffer underflow in the xmlParseAttValueComplex function in parser.c in libxml2 2.9.0 and earlier, as used in Google Chrome before 23.0.1271.91 and other products, allows remote attackers to cause a denial of service or possibly execute arbitrary code via crafted entities in an XML document. Desbordamiento de búfer basado en memoria dinámica en la función xmlParseAttValueComplex en parser.c en libxml2 2.9.0 y anteriores, como las usadas en Google Chrome anteriores a 23.0.1271.91,permite a atacantes remotos causar una denegación de servicio (cuelgue) o ejecutar código a través de una entidad manipulada en un fichero XML. • http://git.gnome.org/browse/libxml2/commit/?id=6a36fbe3b3e001a8a840b5c1fdd81cefc9947f0d http://googlechromereleases.blogspot.com/2012/11/stable-channel-update.html http://lists.apple.com/archives/security-announce/2013/Oct/msg00009.html http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00023.html http://lists.opensuse.org/opensuse-security-announce/2013- • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 6.8EPSS: 1%CPEs: 101EXPL: 0CVE-2012-2871 – libxslt: Heap-buffer overflow caused by bad cast in XSL transforms
https://notcve.org/view.php?id=CVE-2012-2871
libxml2 2.9.0-rc1 and earlier, as used in Google Chrome before 21.0.1180.89, does not properly support a cast of an unspecified variable during handling of XSL transforms, which allows remote attackers to cause a denial of service or possibly have unknown other impact via a crafted document, related to the _xmlNs data structure in include/libxml/tree.h. libxml2 v2.9.0-rc1 y anteriores, tal como se utiliza en Google Chrome antes de v21.0.1180.89, no admite correctamente un conversión de una variable no especificada durante la manipulación de las transformaciones XSL, lo que permite a atacantes remotos provocar una denegación de servicio o posiblemente tener otro impacto desconocido a través de un documento diseñado para tal fin. Se trata de un problema relacionado con la estructura de datos _xmlNs en include/libxml/tree.h. • http://code.google.com/p/chromium/issues/detail?id=138673 http://googlechromereleases.blogspot.com/2012/08/stable-channel-update_30.html http://lists.apple.com/archives/security-announce/2013/Oct/msg00009.html http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00030.html http://secunia.com/advisories/50838 http://secunia.com/advisories/54886 http://src.chromium.org/viewvc/chrome/trunk/src/third_party/libx • CWE-122: Heap-based Buffer Overflow •
CVSS: 5.0EPSS: 0%CPEs: 172EXPL: 0CVE-2012-0841 – libxml2: hash table collisions CPU usage DoS
https://notcve.org/view.php?id=CVE-2012-0841
libxml2 before 2.8.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data. libxml2 v2.8.0 y anteriores calcula los valores de hash sin restringir la capacidad de provocar colisiones hash predecibles, lo que permite a atacantes dependientes de contexto provocar una denegación de servicio (consumo de CPU) a través datos XML modificados. • http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=660846 http://git.gnome.org/browse/libxml2/commit/?id=8973d58b7498fa5100a876815476b81fd1a2412a http://lists.apple.com/archives/security-announce/2013/Oct/msg00009.html http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html http://rhn.redhat.com/errata/RHSA-2012-0324.html http://rhn.redhat.com/errata/RHSA-2013-0217.html http://secunia.com/advisories/54 • CWE-399: Resource Management Errors CWE-407: Inefficient Algorithmic Complexity •