CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
75.5%
CentOS Errata and Security Advisory CESA-2015:1457
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:
Users of gnutls are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.
Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2015-July/028207.html
Affected packages:
gnutls
gnutls-devel
gnutls-guile
gnutls-utils
Upstream details at:
https://access.redhat.com/errata/RHSA-2015:1457
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
CentOS | 6 | i686 | gnutls | < 2.8.5-18.el6 | gnutls-2.8.5-18.el6.i686.rpm |
CentOS | 6 | i686 | gnutls-devel | < 2.8.5-18.el6 | gnutls-devel-2.8.5-18.el6.i686.rpm |
CentOS | 6 | i686 | gnutls-guile | < 2.8.5-18.el6 | gnutls-guile-2.8.5-18.el6.i686.rpm |
CentOS | 6 | i686 | gnutls-utils | < 2.8.5-18.el6 | gnutls-utils-2.8.5-18.el6.i686.rpm |
CentOS | 6 | i686 | gnutls | < 2.8.5-18.el6 | gnutls-2.8.5-18.el6.i686.rpm |
CentOS | 6 | x86_64 | gnutls | < 2.8.5-18.el6 | gnutls-2.8.5-18.el6.x86_64.rpm |
CentOS | 6 | i686 | gnutls-devel | < 2.8.5-18.el6 | gnutls-devel-2.8.5-18.el6.i686.rpm |
CentOS | 6 | x86_64 | gnutls-devel | < 2.8.5-18.el6 | gnutls-devel-2.8.5-18.el6.x86_64.rpm |
CentOS | 6 | i686 | gnutls-guile | < 2.8.5-18.el6 | gnutls-guile-2.8.5-18.el6.i686.rpm |
CentOS | 6 | x86_64 | gnutls-guile | < 2.8.5-18.el6 | gnutls-guile-2.8.5-18.el6.x86_64.rpm |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
75.5%