-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: gnutls security and bug fix update Advisory ID: RHSA-2015:1457-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1457.html Issue date: 2015-07-22 Updated on: 2015-01-15 CVE Names: CVE-2014-8155 CVE-2015-0282 CVE-2015-0294 ===================================================================== 1. Summary: Updated gnutls packages that fix three security issues and one bug are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: 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. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1036385 - Certtool generates x509 certificates which contain negative modulus 1194371 - CVE-2015-0282 gnutls: RSA PKCS#1 signature verification forgery 1196323 - CVE-2015-0294 gnutls: certificate algorithm consistency checking issue 1197995 - CVE-2014-8155 gnutls: gnutls does not perform date/time checks on CA certificates 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: gnutls-2.8.5-18.el6.src.rpm i386: gnutls-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-utils-2.8.5-18.el6.i686.rpm x86_64: gnutls-2.8.5-18.el6.i686.rpm gnutls-2.8.5-18.el6.x86_64.rpm gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.x86_64.rpm gnutls-utils-2.8.5-18.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-devel-2.8.5-18.el6.i686.rpm gnutls-guile-2.8.5-18.el6.i686.rpm x86_64: gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.x86_64.rpm gnutls-devel-2.8.5-18.el6.i686.rpm gnutls-devel-2.8.5-18.el6.x86_64.rpm gnutls-guile-2.8.5-18.el6.i686.rpm gnutls-guile-2.8.5-18.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: gnutls-2.8.5-18.el6.src.rpm x86_64: gnutls-2.8.5-18.el6.i686.rpm gnutls-2.8.5-18.el6.x86_64.rpm gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.x86_64.rpm gnutls-utils-2.8.5-18.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.x86_64.rpm gnutls-devel-2.8.5-18.el6.i686.rpm gnutls-devel-2.8.5-18.el6.x86_64.rpm gnutls-guile-2.8.5-18.el6.i686.rpm gnutls-guile-2.8.5-18.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: gnutls-2.8.5-18.el6.src.rpm i386: gnutls-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-devel-2.8.5-18.el6.i686.rpm gnutls-utils-2.8.5-18.el6.i686.rpm ppc64: gnutls-2.8.5-18.el6.ppc.rpm gnutls-2.8.5-18.el6.ppc64.rpm gnutls-debuginfo-2.8.5-18.el6.ppc.rpm gnutls-debuginfo-2.8.5-18.el6.ppc64.rpm gnutls-devel-2.8.5-18.el6.ppc.rpm gnutls-devel-2.8.5-18.el6.ppc64.rpm gnutls-utils-2.8.5-18.el6.ppc64.rpm s390x: gnutls-2.8.5-18.el6.s390.rpm gnutls-2.8.5-18.el6.s390x.rpm gnutls-debuginfo-2.8.5-18.el6.s390.rpm gnutls-debuginfo-2.8.5-18.el6.s390x.rpm gnutls-devel-2.8.5-18.el6.s390.rpm gnutls-devel-2.8.5-18.el6.s390x.rpm gnutls-utils-2.8.5-18.el6.s390x.rpm x86_64: gnutls-2.8.5-18.el6.i686.rpm gnutls-2.8.5-18.el6.x86_64.rpm gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.x86_64.rpm gnutls-devel-2.8.5-18.el6.i686.rpm gnutls-devel-2.8.5-18.el6.x86_64.rpm gnutls-utils-2.8.5-18.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-guile-2.8.5-18.el6.i686.rpm ppc64: gnutls-debuginfo-2.8.5-18.el6.ppc.rpm gnutls-debuginfo-2.8.5-18.el6.ppc64.rpm gnutls-guile-2.8.5-18.el6.ppc.rpm gnutls-guile-2.8.5-18.el6.ppc64.rpm s390x: gnutls-debuginfo-2.8.5-18.el6.s390.rpm gnutls-debuginfo-2.8.5-18.el6.s390x.rpm gnutls-guile-2.8.5-18.el6.s390.rpm gnutls-guile-2.8.5-18.el6.s390x.rpm x86_64: gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.x86_64.rpm gnutls-guile-2.8.5-18.el6.i686.rpm gnutls-guile-2.8.5-18.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: gnutls-2.8.5-18.el6.src.rpm i386: gnutls-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-devel-2.8.5-18.el6.i686.rpm gnutls-utils-2.8.5-18.el6.i686.rpm x86_64: gnutls-2.8.5-18.el6.i686.rpm gnutls-2.8.5-18.el6.x86_64.rpm gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.x86_64.rpm gnutls-devel-2.8.5-18.el6.i686.rpm gnutls-devel-2.8.5-18.el6.x86_64.rpm gnutls-utils-2.8.5-18.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-guile-2.8.5-18.el6.i686.rpm x86_64: gnutls-debuginfo-2.8.5-18.el6.i686.rpm gnutls-debuginfo-2.8.5-18.el6.x86_64.rpm gnutls-guile-2.8.5-18.el6.i686.rpm gnutls-guile-2.8.5-18.el6.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2014-8155 https://access.redhat.com/security/cve/CVE-2015-0282 https://access.redhat.com/security/cve/CVE-2015-0294 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVrzeUXlSAg2UNWIIRAvGyAJ4ihCbJNrh2OQApebjpshHi1oJOSgCfZVpE V1GWk9rJwamgNOvnvQYWIfY= =ENJ7 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce