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CVSS: 6.8EPSS: 1%CPEs: 198EXPL: 0

A certain pseudo-random number generator (PRNG) algorithm that uses XOR and 3-bit random hops (aka "Algorithm X3"), as used in OpenBSD 2.8 through 4.2, allows remote attackers to guess sensitive values such as DNS transaction IDs by observing a sequence of previously generated values. NOTE: this issue can be leveraged for attacks such as DNS cache poisoning against OpenBSD's modification of BIND. Cierto algoritmo generador de números pseudo-aleatorios(PRNG) que usa XOR y alterna en saltos de 3-bit (también conocido com o"algoritmo X3"), usado en OpenBSD de la v2.8 a la 4.2, permite a atacantes remotos adivinar datos sensibles como los IDs de una transacción DNS, observando una secuencia de datos generada previamente. NOTA: esta cuestión puede ser aprovechado por ataques como el envenenamiento de la caché DNS contra la modificación BIND en OpenBDS. • http://secunia.com/advisories/28819 http://www.securiteam.com/securityreviews/5PP0H0UNGW.html http://www.securityfocus.com/archive/1/487658 http://www.securityfocus.com/bid/27647 http://www.trusteer.com/docs/OpenBSD_DNS_Cache_Poisoning_and_Multiple_OS_Predictable_IP_ID_Vulnerability.pdf https://exchange.xforce.ibmcloud.com/vulnerabilities/40329 •

CVSS: 7.8EPSS: 14%CPEs: 9EXPL: 0

The IPv6 protocol allows remote attackers to cause a denial of service via crafted IPv6 type 0 route headers (IPV6_RTHDR_TYPE_0) that create network amplification between two routers. El protocolo IPv6 permite a atacantes remotos provocar una denegación de servicio mediante cabeceras IPv6 de enrutamiento de tipo 0 (IPV6_RTHDR_TYPE_0) lo cual provoca amplificación de la red entre dos enrutadores. • http://docs.info.apple.com/article.html?artnum=305712 http://docs.info.apple.com/article.html?artnum=306375 http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html http://openbsd.org/errata39.html#022_route6 http://openbsd.org/errata40.html#012_route6 http://secunia.com/advisories/24978 http://secunia.com/advisories/25033 http://secunia.com/advisories/25068 http://secunia.com/advisories/25083 http://secunia.com/advisories/25288 http://secunia.com/advisories/25 •

CVSS: 3.8EPSS: 2%CPEs: 56EXPL: 0

Integer overflow in the FontFileInitTable function in X.Org libXfont before 20070403 allows remote authenticated users to execute arbitrary code via a long first line in the fonts.dir file, which results in a heap overflow. Desbordamiento de entero en la función FontFileInitTable en X.Org libXfont versiones anteriores a 20070403 permite a usuarios remotos autenticados ejecutar código de su elección mediante una primera línea larga en el fichero fonts.dir, lo cual resulta en un desbordamiento de montón. • http://issues.foresightlinux.org/browse/FL-223 http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=502 http://lists.apple.com/archives/Security-announce/2007/Nov/msg00003.html http://lists.apple.com/archives/security-announce/2009/Feb/msg00000.html http://lists.freedesktop.org/archives/xorg-announce/2007-April/000286.html http://rhn.redhat.com/errata/RHSA-2007-0125.html http://secunia.com/advisories/24741 http://secunia.com/advisories/24745 http://secunia.com/advisories/ •

CVSS: 8.5EPSS: 5%CPEs: 45EXPL: 0

Integer overflow in the bdfReadCharacters function in bdfread.c in (1) X.Org libXfont before 20070403 and (2) freetype 2.3.2 and earlier allows remote authenticated users to execute arbitrary code via crafted BDF fonts, which result in a heap overflow. Desbordamiento de enteros en la función bdfReadCharacters en (1) X.Org libXfont before 20070403 y (2) freetype 2.3.2 y permite a usuarios remotos validados ejecutar código de su elección a través de fuentes manipuladas BDF, las cueles dan como resultado un desbordamiento de pila. • http://issues.foresightlinux.org/browse/FL-223 http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=501 http://lists.apple.com/archives/Security-announce/2007/Nov/msg00003.html http://lists.apple.com/archives/security-announce/2009/Feb/msg00000.html http://lists.freedesktop.org/archives/xorg-announce/2007-April/000286.html http://rhn.redhat.com/errata/RHSA-2007-0125.html http://secunia.com/advisories/24741 http://secunia.com/advisories/24745 http://secunia.com/advisories/ • CWE-189: Numeric Errors •

CVSS: 10.0EPSS: 44%CPEs: 2EXPL: 1

Buffer overflow in kern/uipc_mbuf2.c in OpenBSD 3.9 and 4.0 allows remote attackers to execute arbitrary code via fragmented IPv6 packets due to "incorrect mbuf handling for ICMP6 packets." NOTE: this was originally reported as a denial of service. Desbordamiento de búfer en kern/uipc_mbuf2.c en OpenBSD 3.9 y 4.0 permite a atacantes remotos ejecutar código arbitrario a través de paquetes IPv6 framentados debido a "manipulación incorrecta de mbuf para paquetes ICMP6". NOTA: Esto fue reportado originalmente como una denegación de servicio. • https://www.exploit-db.com/exploits/29725 http://marc.info/?l=openbsd-cvs&m=117252151023868&w=2 http://secunia.com/advisories/24490 http://securitytracker.com/id?1017735 http://www.coresecurity.com/?action=item&id=1703 http://www.kb.cert.org/vuls/id/986425 http://www.openbsd.org/errata39.html#m_dup1 http://www.openbsd.org/errata40.html#m_dup1 http://www.osvdb.org/33050 http://www.securityfocus.com/bid/22901 http://www.securitytracker.com/id?1017744 •