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CVSS: 5.0EPSS: 0%CPEs: 35EXPL: 0

The (1) asn1_read_value_type and (2) asn1_read_value functions in GNU Libtasn1 before 3.6 allows context-dependent attackers to cause a denial of service (NULL pointer dereference and crash) via a NULL value in an ivalue argument. Las funciones (1) asn1_read_value_type y (2) asn1_read_value en GNU Libtasn1 anterior a 3.6 permite a atacantes dependientes de contexto causar una denegación de servicio (referencia de puntero nulo y caída) a través de un valor nulo en un argumento ivalue. • http://advisories.mageia.org/MGASA-2014-0247.html http://linux.oracle.com/errata/ELSA-2014-0594.html http://linux.oracle.com/errata/ELSA-2014-0596.html http://lists.gnu.org/archive/html/help-libtasn1/2014-05/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00015.html http://rhn.redhat.com/errata/RHSA-2014-0594.html http://rhn.redhat.com/errata/RHSA-2014-0596.html http:/&#x • CWE-476: NULL Pointer Dereference •

CVSS: 6.8EPSS: 59%CPEs: 47EXPL: 2

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a long session id in a ServerHello message. Desbordamiento de buffer en la función read_server_hello en lib/gnutls_handshake.c en GnuTLS anterior a 3.1.25, 3.2.x anterior a 3.2.15 y 3.3.x anterior a 3.3.4 permite a servidores remotos causar una denegación de servicio (consumo de memoria) o posiblemente ejecutar código arbitrario a través de una sesión id larga en un mensaje ServerHello. A flaw was found in the way GnuTLS parsed session IDs from ServerHello messages of the TLS/SSL handshake. A malicious server could use this flaw to send an excessively long session ID value, which would trigger a buffer overflow in a connecting TLS/SSL client application using GnuTLS, causing the client application to crash or, possibly, execute arbitrary code. • http://linux.oracle.com/errata/ELSA-2014-0594.html http://linux.oracle.com/errata/ELSA-2014-0595.html http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00015.html http://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability http://rhn.redhat.com/e • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 5.8EPSS: 0%CPEs: 6EXPL: 1

GnuTLS before 2.7.6, when the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled, treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates, a different vulnerability than CVE-2014-1959. GnuTLS anterior a 2.7.6, cuando el indicador GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT no está habilitado, trata certificados X.509 de versión 1 como CAs intermedios, lo que permite a atacantes remotos evadir restricciones mediante el aprovechamiento de un certificado X.509 V1 de un CA confiable para emitir certificados nuevos, una vulnerabilidad diferente a CVE-2014-1959. • http://article.gmane.org/gmane.comp.security.oss.general/12223 http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00020.html http://rhn.redhat.com/errata/RHSA-2014-0247.html http://secunia.com/advisories/57254 http://secunia.com/advisories/57260 http://sec • CWE-264: Permissions, Privileges, and Access Controls CWE-295: Improper Certificate Validation •

CVSS: 5.8EPSS: 7%CPEs: 35EXPL: 0

lib/x509/verify.c in GnuTLS before 3.1.22 and 3.2.x before 3.2.12 does not properly handle unspecified errors when verifying X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers via a crafted certificate. lib/x509/verify.c en GnuTLS anterior a 3.1.22 y 3.2.x anterior a 3.2.12 no maneja debidamente errores no especificados cuando verifica certificados X.509 de servidores SSL, lo que permite a atacantes man-in-the-middle falsificar servidores a través de un certificado manipulado. • http://gnutls.org/security.html#GNUTLS-SA-2014-2 http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00005.html http:&#x • CWE-295: Improper Certificate Validation CWE-310: Cryptographic Issues •

CVSS: 5.8EPSS: 0%CPEs: 33EXPL: 1

lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates. lib/x509/verify.c en GnuTLS anterior a 3.1.21 y 3.2.x anterior a 3.2.11 trata certificados X.509 de versión 1 como CAs intermedios, lo que permite a atacantes remotos evadir restricciones mediante el aprovechamiento de un certificado X.509 V1 de un CA confiable para emitir certificados nuevos. • http://seclists.org/oss-sec/2014/q1/344 http://seclists.org/oss-sec/2014/q1/345 http://www.debian.org/security/2014/dsa-2866 http://www.gnutls.org/security.html http://www.securityfocus.com/bid/65559 http://www.ubuntu.com/usn/USN-2121-1 https://www.gitorious.org/gnutls/gnutls/commit/b1abfe3d182d68539900092eb42fc62cf1bb7e7c • CWE-264: Permissions, Privileges, and Access Controls •