CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0CVE-2016-7444 – gnutls: Incorrect certificate validation when using OCSP responses (GNUTLS-SA-2016-3)
https://notcve.org/view.php?id=CVE-2016-7444
The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc. La función gnutls_ocsp_resp_check_crt en lib/x509/ocsp.c en GnuTLS en versiones anteriores a 3.4.15 y 3.5.x en versiones anteriores a 3.5.4 no verifica la longitud de serie de una respuesta OCSP, lo que podría permitir a atacantes remotos eludir un mecanismo de validación destinada a certificados a través de vectores que involucran bytes finales dejados por gnutls_malloc. A flaw was found in the way GnuTLS validated certificates using OCSP responses. This could falsely report a certificate as valid under certain circumstances. • http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html http://www.securityfocus.com/bid/92893 https://access.redhat.com/errata/RHSA-2017:2292 https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9 https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html https://www.gnutls.org/security.html https://access.redhat.com/security/cve/CVE-2016-7444 https://bugzilla.redhat.com/show_bug.cgi?id=1374266 • CWE-264: Permissions, Privileges, and Access Controls CWE-295: Improper Certificate Validation •
CVSS: 7.5EPSS: 3%CPEs: 2EXPL: 0CVE-2015-3308
https://notcve.org/view.php?id=CVE-2015-3308
Double free vulnerability in lib/x509/x509_ext.c in GnuTLS before 3.3.14 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted CRL distribution point. Vulnerabilidad de liberación doble en lib/x509/x509_ext.c en GnuTLS en versiones anteriores a 3.3.14, permite a atacantes remotos causar una denegación de servicio o posiblemente tener otro impacto no especificado a través de un punto de distribución CRL manipulado. • http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155101.html http://www.gnutls.org/security.html#GNUTLS-SA-2015-4 http://www.openwall.com/lists/oss-security/2015/04/15/6 http://www.openwall.com/lists/oss-security/2015/04/16/6 http://www.securityfocus.com/bid/74188 http://www.securitytracker.com/id/1033774 http://www.ubuntu.com/usn/USN-2727-1 https://gitlab.com/gnutls/gnutls/commit/053ae65403216acdb0a4e78b25ad66ee9f444f02 https://gitlab.com/gnutls/gnutls/co •
CVSS: 4.3EPSS: 0%CPEs: 1EXPL: 0CVE-2014-8155 – gnutls: gnutls does not perform date/time checks on CA certificates
https://notcve.org/view.php?id=CVE-2014-8155
GnuTLS before 2.9.10 does not verify the activation and expiration dates of CA certificates, which allows man-in-the-middle attackers to spoof servers via a certificate issued by a CA certificate that is (1) not yet valid or (2) no longer valid. Vulnerabilidad en GnuTLS en versiones anteriores a 2.9.10, no verifica las fechas de activación y expiración de certificados CA, lo que permite a atacantes man-in-the-middle suplantar servidores a través de un certificado expedido por un certificado CA que (1) aún no es válido o (2) ya no es válido. It was found that GnuTLS did not check activation and expiration dates of CA certificates. This could cause an application using GnuTLS to incorrectly accept a certificate as valid when its issuing CA is already expired. • http://rhn.redhat.com/errata/RHSA-2015-1457.html http://www.securityfocus.com/bid/73317 https://gitlab.com/gnutls/gnutls/commit/897cbce62c0263a498088ac3e465aa5f05f8719c https://support.f5.com/csp/article/K53330207 https://access.redhat.com/security/cve/CVE-2014-8155 https://bugzilla.redhat.com/show_bug.cgi?id=1197995 • CWE-17: DEPRECATED: Code CWE-325: Missing Cryptographic Step •
CVSS: 5.0EPSS: 0%CPEs: 1EXPL: 0CVE-2015-0282 – gnutls: RSA PKCS#1 signature verification forgery
https://notcve.org/view.php?id=CVE-2015-0282
GnuTLS before 3.1.0 does not verify that the RSA PKCS #1 signature algorithm matches the signature algorithm in the certificate, which allows remote attackers to conduct downgrade attacks via unspecified vectors. GnuTLS anterior a 3.1.0 no verifica que el algoritmo de firmas RSA PKCS #1 coincide con el algoritmo de firmas en el certificado, lo que permite a atacantes remotos realizar ataques de degradación a través de vectores no especificados. It was found that GnuTLS did not verify whether a hashing algorithm listed in a signature matched the hashing algorithm listed in the certificate. An attacker could create a certificate that used a different hashing algorithm than it claimed, possibly causing GnuTLS to use an insecure, disallowed hashing algorithm during certificate verification. • http://rhn.redhat.com/errata/RHSA-2015-1457.html http://www.debian.org/security/2015/dsa-3191 http://www.gnutls.org/security.html http://www.securityfocus.com/bid/73119 http://www.securitytracker.com/id/1032148 https://access.redhat.com/security/cve/CVE-2015-0282 https://bugzilla.redhat.com/show_bug.cgi?id=1194371 • CWE-295: Improper Certificate Validation CWE-310: Cryptographic Issues •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2015-0294 – gnutls: certificate algorithm consistency checking issue
https://notcve.org/view.php?id=CVE-2015-0294
GnuTLS before 3.3.13 does not validate that the signature algorithms match when importing a certificate. GnuTLS versiones anteriores a 3.3.13, no comprueba que los algoritmos de firma coincidan cuando se importa un certificado. It was discovered that GnuTLS did not check if all sections of X.509 certificates indicate the same signature algorithm. This flaw, in combination with a different flaw, could possibly lead to a bypass of the certificate signature check. • http://www.debian.org/security/2015/dsa-3191 https://bugzilla.redhat.com/show_bug.cgi?id=1196323 https://gitlab.com/gnutls/gnutls/commit/6e76e9b9fa845b76b0b9a45f05f4b54a052578ff https://access.redhat.com/security/cve/CVE-2015-0294 • CWE-295: Improper Certificate Validation •