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CVSS: 7.5EPSS: 0%CPEs: 42EXPL: 0

24 May 2010 — The _gnutls_x509_oid2mac_algorithm function in lib/gnutls_algorithms.c in GnuTLS before 1.4.2 allows remote attackers to cause a denial of service (crash) via a crafted X.509 certificate that uses a hash algorithm that is not supported by GnuTLS, which triggers a NULL pointer dereference. La función _gnutls_x509_oid2mac_algorithm en lib/gnutls_algorithms.c de GnuTLS anterior a v1.4.2. Permite a atacantes remotos provocar una denegación de servicio (caída de la aplicación) a través de un certificado X.509 ma... • http://lists.gnupg.org/pipermail/gnutls-dev/2006-August/001190.html • CWE-310: Cryptographic Issues •

CVSS: 9.1EPSS: 2%CPEs: 22EXPL: 2

26 Mar 2010 — The gnutls_x509_crt_get_serial function in the GnuTLS library before 1.2.1, when running on big-endian, 64-bit platforms, calls the asn1_read_value with a pointer to the wrong data type and the wrong length value, which allows remote attackers to bypass the certificate revocation list (CRL) check and cause a stack-based buffer overflow via a crafted X.509 certificate, related to extraction of a serial number. La función gnutls_x509_crt_get_serial en la librería GnuTLS anterior a v1.2.1, cunado se está ejecu... • http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 9.8EPSS: 3%CPEs: 21EXPL: 6

09 Nov 2009 — 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... • https://www.exploit-db.com/exploits/10071 • CWE-295: Improper Certificate Validation CWE-300: Channel Accessible by Non-Endpoint •

CVSS: 7.5EPSS: 0%CPEs: 121EXPL: 0

12 Aug 2009 — libgnutls in GnuTLS before 2.8.2 does not properly handle a '\0' character in a domain name in the subject's (1) Common Name (CN) or (2) Subject Alternative Name (SAN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority. libgnutls en GnuTLS versiones anteriores a v2.8.2 no gestiona adecuadamente un carácter '\0' en el nombre de dominio en los campos de identificación (1) Common Name (C... • http://article.gmane.org/gmane.network.gnutls.general/1733 • CWE-310: Cryptographic Issues •

CVSS: 9.8EPSS: 1%CPEs: 161EXPL: 0

30 Jul 2009 — 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 anteri... • http://java.sun.com/j2se/1.5.0/ReleaseNotes.html • CWE-310: Cryptographic Issues •

CVSS: 5.0EPSS: 0%CPEs: 117EXPL: 0

30 Apr 2009 — gnutls-cli in GnuTLS before 2.6.6 does not verify the activation and expiration times of X.509 certificates, which allows remote attackers to successfully present a certificate that is (1) not yet valid or (2) no longer valid, related to lack of time checks in the _gnutls_x509_verify_certificate function in lib/x509/verify.c in libgnutls_x509, as used by (a) Exim, (b) OpenLDAP, and (c) libsoup. gnutls-cli en GnuTLS anteriores a v2.6.6 no verifica la activación y tiempos de caducidad de los certificados X.50... • http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3517 • CWE-310: Cryptographic Issues •

CVSS: 9.8EPSS: 25%CPEs: 1EXPL: 2

30 Apr 2009 — lib/pk-libgcrypt.c in libgnutls in GnuTLS before 2.6.6 does not properly handle invalid DSA signatures, which allows remote attackers to cause a denial of service (application crash) and possibly have unspecified other impact via a malformed DSA key that triggers a (1) free of an uninitialized pointer or (2) double free. lib/pk-libgcrypt.c en libgnutls en GnuTLS anterior a v2.6.6 no maneja correctamente las firmas DSA, lo cual permite a atacantes remotos provocar una denegación de servicio (cuelgue de aplic... • https://www.exploit-db.com/exploits/32964 • CWE-824: Access of Uninitialized Pointer •

CVSS: 9.1EPSS: 2%CPEs: 7EXPL: 2

30 Apr 2009 — lib/gnutls_pk.c in libgnutls in GnuTLS 2.5.0 through 2.6.5 generates RSA keys stored in DSA structures, instead of the intended DSA keys, which might allow remote attackers to spoof signatures on certificates or have unspecified other impact by leveraging an invalid DSA key. lib/gnutls_pk.c en libgnutls en GnuTLS v2.5.0 hasta v2.6.5 genera claves RSA almacenados en estructuras DSA, en lugar de las claves DSA previstas, lo cual podría permitir a atacantes remotos suplantar firmas en los certificados o tener ... • https://www.exploit-db.com/exploits/32965 • CWE-310: Cryptographic Issues •

CVSS: 5.9EPSS: 0%CPEs: 13EXPL: 0

13 Nov 2008 — The _gnutls_x509_verify_certificate function in lib/x509/verify.c in libgnutls in GnuTLS before 2.6.1 trusts certificate chains in which the last certificate is an arbitrary trusted, self-signed certificate, which allows man-in-the-middle attackers to insert a spoofed certificate for any Distinguished Name (DN). La función _gnutls_x509_verify_certificate en lib/x509/verify.c en libgnutls en GnuTLS antes de v2.6.1 confía en las cadenas de certificado en las que el último certificado es un certificado de conf... • http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3215 • CWE-295: Improper Certificate Validation •

CVSS: 9.8EPSS: 2%CPEs: 6EXPL: 1

08 Aug 2008 — Use-after-free vulnerability in the _gnutls_handshake_hash_buffers_clear function in lib/gnutls_handshake.c in libgnutls in GnuTLS 2.3.5 through 2.4.0 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via TLS transmission of data that is improperly used when the peer calls gnutls_handshake within a normal session, leading to attempted access to a deallocated libgcrypt handle. Vulnerabilidad de uso después de liberación en la función _gnutls_handshake_hash_buffer... • http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2947 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •