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CVSS: 5.8EPSS: 0%CPEs: 21EXPL: 5

The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and earlier, OpenSSL before 0.9.8l, GnuTLS 2.8.5 and earlier, Mozilla Network Security Services (NSS) 3.12.4 and earlier, multiple Cisco products, and other products, does not properly associate renegotiation handshakes with an existing connection, which allows man-in-the-middle attackers to insert data into HTTPS sessions, and possibly other types of sessions protected by TLS or SSL, by sending an unauthenticated request that is processed retroactively by a server in a post-renegotiation context, related to a "plaintext injection" attack, aka the "Project Mogul" issue. El protocolo TLS y el protocolo SSL v3.0 y posiblemente versiones anteriores, tal y como se usa en Microsoft Internet Information Services (IIS) v7.0, mod_ssl en el servidor HTTP Apache v2.2.14 y anteriores, OpenSSL antes de v0.9.8l, GnuTLS v2.8.5 y anteriores, Mozilla Network Security Services (NSS) v3.12.4 y anteriores, y otros productos, no asocia apropiadamente la renegociación del Handshake SSL en una conexión existente, lo que permite ataques man-in-the-middle en los que el atacante inserta datos en sesiones HTTPS, y posiblemente otro tipo de sesiones protegidas por SSL o TLS, enviando una petición de autenticación que es procesada retroactivamente por un servidor en un contexto post-renegociación. Se trata de un ataque de "inyección de texto plano", también conocido como el problema del "Proyecto Mogul". • https://www.exploit-db.com/exploits/10071 https://www.exploit-db.com/exploits/10579 http://archives.neohapsis.com/archives/bugtraq/2013-11/0120.html http://blog.g-sec.lu/2009/11/tls-sslv3-renegotiation-vulnerability.html http://blogs.iss.net/archive/sslmitmiscsrf.html http://blogs.sun.com/security/entry/vulnerability_in_tls_protocol_during http://clicky.me/tlsvuln http://extendedsubset.com/?p=8 http://extendedsubset.com/Renegotiating_TLS.pdf http://h20000.www2.hp.com/bizsuppo • CWE-295: Improper Certificate Validation CWE-300: Channel Accessible by Non-Endpoint •

CVSS: 5.1EPSS: 1%CPEs: 161EXPL: 0

The Network Security Services (NSS) library before 3.12.3, as used in Firefox; GnuTLS before 2.6.4 and 2.7.4; OpenSSL 0.9.8 through 0.9.8k; and other products support MD2 with X.509 certificates, which might allow remote attackers to spoof certificates by using MD2 design flaws to generate a hash collision in less than brute-force time. NOTE: the scope of this issue is currently limited because the amount of computation required is still large. La librería Network Security Services (NSS) en versiones anteriores a 3.12.3, como se utiliza en Firefox; GnuTLS en versiones anteriores a 2.6.4 y 2.7.4; OpenSSL 0.9.8 hasta la versión 0.9.8k; y otros productos que soportan MD2 con certificados X.509, lo que podrían permitir a atacantes remotos falsificar certificados usando defectos de diseño de MD2 para generar una colisión de hash en menos que tiempo que con fuerza bruta. NOTA: el alcance de este problema está actualmente limitado porque la cantidad de computación requerida es todavía grande. • http://java.sun.com/j2se/1.5.0/ReleaseNotes.html http://java.sun.com/javase/6/webnotes/6u17.html http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html http://secunia.com/advisories/36139 http://secunia.com/advisories/36157 http://secunia.com/advisories/36434 http://secunia.com/advisories/36669 http://secunia.com/advisories/36739 http://secunia.com/advisories/37386 http://secunia.com/advisories/42467 http://security.gentoo.org/glsa/glsa-200911-02.x • CWE-310: Cryptographic Issues •

CVSS: 5.0EPSS: 6%CPEs: 8EXPL: 2

ssl/s3_pkt.c in OpenSSL before 0.9.8i allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a DTLS ChangeCipherSpec packet that occurs before ClientHello. ssl/s3_pkt.c en OpenSSL anteriores a v0.9.8i permite a los atacantes remotos, causar una denegación de servicios (puntero NULO desreferenciado y caída del "daemon"), a través de un paquete ChangeCipherSpec DTLs que ocurre antes de ClientHello. • https://www.exploit-db.com/exploits/8873 ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-009.txt.asc http://cvs.openssl.org/chngview?cn=17369 http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02029444 http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html http://lists.vmware.com/pipermail/security-announce/2010/000082.html http://rt.openssl.org/Ticket/Display.html?id=1679&user=guest&pass=guest http://secunia.com/advisories/35571&# • CWE-476: NULL Pointer Dereference •

CVSS: 5.0EPSS: 4%CPEs: 8EXPL: 0

The dtls1_retrieve_buffered_fragment function in ssl/d1_both.c in OpenSSL before 1.0.0 Beta 2 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence DTLS handshake message, related to a "fragment bug." La función dtls1_retrieve_buffered_fragment en ssl/d1_both.c en OpenSSL anteriores a v1.0.0 Beta 2 permite a los atacantes causar una denegación de servicios (puntero NULO desreferenciado y caída de "daemon") a través de un mensaje "handshake" DTLS fuera de secuencia, relativo a "fragment bug". • ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-009.txt.asc http://cvs.openssl.org/chngview?cn=17958 http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02029444 http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html http://lists.vmware.com/pipermail/security-announce/2010/000082.html http://rt.openssl.org/Ticket/Display.html?id=1838&user=guest&pass=guest http://secunia.com/advisories/35571 http://secunia.com/advisories/35685 http:& • CWE-476: NULL Pointer Dereference •

CVSS: 5.0EPSS: 5%CPEs: 1EXPL: 0

The dtls1_buffer_record function in ssl/d1_pkt.c in OpenSSL 0.9.8k and earlier 0.9.8 versions allows remote attackers to cause a denial of service (memory consumption) via a large series of "future epoch" DTLS records that are buffered in a queue, aka "DTLS record buffer limitation bug." La función dtls1_buffer_record en ssl/d1_pkt.c en OpenSSL 0.9.8k y anteriores permite a atacantes remotos producir una denegación de servicio (consumo de memoria) a través de series largas de registros DTLS de "eras futuras" que se almacenan en búfer en una cola, también conocido como "fallo de limitación de la grabación de búfer DTLS" • ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-009.txt.asc http://cvs.openssl.org/chngview?cn=18187 http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02029444 http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00003.html http://lists.vmware.com/pipermail/security-announce/2010/000082.html http://marc.info/?l=openssl-dev&m=124247675613888&w=2 http://rt.openssl.org/Ticket/Display.html?id=1930&user=guest&pass=guest http://secunia.com& • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •