ID de Prueba:	1.3.6.1.4.1.25623.1.0.871406
Categoría:	Red Hat Local Security Checks
Título:	RedHat Update for gnutls RHSA-2015:1457-01
Resumen:	The remote host is missing an update for the 'gnutls'; package(s) announced via the referenced advisory.
Descripción:	Summary: The remote host is missing an update for the 'gnutls' package(s) announced via the referenced advisory. Vulnerability Insight: The GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS). 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. (CVE-2014-8155) 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. (CVE-2015-0282) 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. (CVE-2015-0294) The CVE-2014-8155 issue was discovered by Marcel Kolaja of Red Hat. The CVE-2015-0282 and CVE-2015-0294 issues were discovered by Nikos Mavrogiannopoulos of the Red Hat Security Technologies Team. This update also fixes the following bug: * Previously, under certain circumstances, the certtool utility could generate X.509 certificates which contained a negative modulus. Consequently, such certificates could have interoperation problems with the software using them. The bug has been fixed, and certtool no longer generates X.509 certificates containing a negative modulus. (BZ#1036385) Users of gnutls are advised to upgrade to these updated packages, which contain backported patches to correct these issues. Affected Software/OS: gnutls on Red Hat Enterprise Linux Desktop (v. 6), Red Hat Enterprise Linux Server (v. 6), Red Hat Enterprise Linux Workstation (v. 6) Solution: Please Install the Updated Packages. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2014-8155 73317 http://www.securityfocus.com/bid/73317 RHSA-2015:1457 http://rhn.redhat.com/errata/RHSA-2015-1457.html https://gitlab.com/gnutls/gnutls/commit/897cbce62c0263a498088ac3e465aa5f05f8719c https://support.f5.com/csp/article/K53330207 Common Vulnerability Exposure (CVE) ID: CVE-2015-0282 BugTraq ID: 73119 http://www.securityfocus.com/bid/73119 Debian Security Information: DSA-3191 (Google Search) http://www.debian.org/security/2015/dsa-3191 RedHat Security Advisories: RHSA-2015:1457 http://www.securitytracker.com/id/1032148 Common Vulnerability Exposure (CVE) ID: CVE-2015-0294 https://bugzilla.redhat.com/show_bug.cgi?id=1196323 https://gitlab.com/gnutls/gnutls/commit/6e76e9b9fa845b76b0b9a45f05f4b54a052578ff
Copyright	Copyright (C) 2015 Greenbone AG

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