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CVSS: 4.3EPSS: 0%CPEs: 50EXPL: 1

The cert_TestHostName function in lib/certdb/certdb.c in the certificate-checking implementation in Mozilla Network Security Services (NSS) before 3.16 accepts a wildcard character that is embedded in an internationalized domain name's U-label, which might allow man-in-the-middle attackers to spoof SSL servers via a crafted certificate. La función cert_TestHostName en lib/certdb/certdb.c en la implementación de comprobación de certificado en Mozilla Network Security Services (NSS) anterior a 3.16 acepta un carácter comodín que está embebido en U-label de un nombre de dominio internacionalizado, lo que podría permitir a atacantes man-in-the-middle falsificar servidores SSL a través de un certificado manipulado. It was found that the implementation of Internationalizing Domain Names in Applications (IDNA) hostname matching in NSS did not follow the RFC 6125 recommendations. This could lead to certain invalid certificates with international characters to be accepted as valid. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132437.html http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00015.html http://lists.opensuse.org/opensuse-updates/2014-05/msg00010.html http://lists.opensuse.org/opensuse-updates/2014-05/msg00033.html http://seclists.org/fulldisclosure/2014/Dec/23 http://secunia.com/advisories/ • CWE-20: Improper Input Validation CWE-295: Improper Certificate Validation •

CVSS: 9.3EPSS: 1%CPEs: 23EXPL: 0

Race condition in libssl in Mozilla Network Security Services (NSS) before 3.15.4, as used in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, SeaMonkey before 2.24, and other products, allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via vectors involving a resumption handshake that triggers incorrect replacement of a session ticket. Condición de carrera en libssl en Mozilla Network Security Services (NSS) anterior a 3.15.4, utilizado en Mozilla Firefox anterior a 27.0, Firefox ESR 24.x anterior a 24.3, Thunderbird anterior a 24.3, SeaMonkey anterior a 2.24 y otros productos, permite a atacantes remotos causar una denegación de servicio (uso después de liberación) o posiblemente tener otro impacto no especificado a través de vectores que involucran una reanudación de handshake que provoca un reemplazo incorrecto de un ticket de sesión. A race condition was found in the way NSS implemented session ticket handling as specified by RFC 5077. An attacker could use this flaw to crash an application using NSS or, in rare cases, execute arbitrary code with the privileges of the user running that application. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127966.html http://lists.fedoraproject.org/pipermail/package-announce/2014-February/129218.html http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2014-03 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •

CVSS: 4.3EPSS: 0%CPEs: 24EXPL: 1

Mozilla Network Security Services (NSS) before 3.15.4, as used in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, SeaMonkey before 2.24, and other products, does not properly restrict public values in Diffie-Hellman key exchanges, which makes it easier for remote attackers to bypass cryptographic protection mechanisms in ticket handling by leveraging use of a certain value. Mozilla Network Security Services (NSS) anterior a 3.15.4, utilizado en Mozilla Firefox anterior a 27.0, Firefox ESR 24.x anterior a 24.3, Thunderbird anterior a 24.3, SeaMonkey anterior a 2.24 y otros productos, no restringe debidamente los valores públicos en el intercambio de claves de Diffie-Hellman, lo que facilita a atacantes remotos evadir mecanismos de protección criptográfica en el manejo de tickets mediante el aprovechamiento de un cierto valor. It was found that NSS accepted weak Diffie-Hellman Key exchange (DHKE) parameters. This could possibly lead to weak encryption being used in communication between the client and the server. • http://hg.mozilla.org/projects/nss/rev/12c42006aed8 http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127966.html http://lists.fedoraproject.org/pipermail/package-announce/2014-February/129218.html http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00010.html http&# • CWE-326: Inadequate Encryption Strength CWE-358: Improperly Implemented Security Check for Standard •

CVSS: 5.8EPSS: 0%CPEs: 47EXPL: 1

The ssl_Do1stHandshake function in sslsecur.c in libssl in Mozilla Network Security Services (NSS) before 3.15.4, when the TLS False Start feature is enabled, allows man-in-the-middle attackers to spoof SSL servers by using an arbitrary X.509 certificate during certain handshake traffic. La función ssl_Do1stHandshake en sslsecur.c en libssl de Mozilla Network Security Services (NSS) anteriores a 3.15.4, cuando la funcionalidad TLS False Start está habilitada, permite a atacantes man-in-the-middle falsear servidores SSL utilizando un certificado X.509 arbitrario durante cierto tráfico de handshake. A flaw was found in the way TLS False Start was implemented in NSS. An attacker could use this flaw to potentially return unencrypted information from the server. • http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00005.html http://seclists.org/fulldisclosure/2014/Dec/23 http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.html http://www.oracle • CWE-310: Cryptographic Issues •

CVSS: 5.0EPSS: 11%CPEs: 20EXPL: 0

Mozilla Network Security Services (NSS) before 3.15.2 does not ensure that data structures are initialized before read operations, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors that trigger a decryption failure. Mozilla Network Security Services (NSS) en versiones anteriores a 3.15.2 no asegura que las estructuras de datos estén inicializadas antes de las operaciones de lectura, lo que permite a atacantes remotos provocar una denegación de servicio o posiblemente tener otro impacto no especificado a través de vectores que desencadenan un fallo de descifrado. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00014.html http://lists.opensuse.org/opensuse-updates/2013-10/msg00013.html http://lists.opensuse.org/opensuse-updates/2013-10/msg00016.html http://rhn.redhat.com/errata/RHSA-2013-1791.html http://rhn.redhat.com/errata/RHSA-2013-1829.html http://seclists.org/fulldisclosure/2014/Dec/23 http://security.gentoo.org/glsa/glsa-201406-19.xml http://www.debia •