Issued:
2017-03-21
Updated:
2017-03-21

RHSA-2017:0574 - Moderate: gnutls security, bug fix, and enhancement update

Synopsis

Moderate: gnutls security, bug fix, and enhancement update

Type/Severity

Security Advisory Moderate

Topic

An update for gnutls is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS.

The following packages have been upgraded to a later upstream version: gnutls (2.12.23). (BZ#1321112, BZ#1326073, BZ#1415682, BZ#1326389)

Security Fix(es):

  • A denial of service flaw was found in the way the TLS/SSL protocol defined processing of ALERT packets during a connection handshake. A remote attacker could use this flaw to make a TLS/SSL server consume an excessive amount of CPU and fail to accept connections form other clients. (CVE-2016-8610)

  • Multiple flaws were found in the way gnutls processed OpenPGP certificates. An attacker could create specially crafted OpenPGP certificates which, when parsed by gnutls, would cause it to crash. (CVE-2017-5335, CVE-2017-5336, CVE-2017-5337)

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • gnutls-devel-2.12.23-21.el6.ppc64.rpm
  • gnutls-devel-2.12.23-21.el6.x86_64.rpm
  • gnutls-2.12.23-21.el6.ppc64.rpm
  • gnutls-2.12.23-21.el6.x86_64.rpm
  • gnutls-guile-2.12.23-21.el6.ppc64.rpm
  • gnutls-debuginfo-2.12.23-21.el6.s390.rpm
  • gnutls-2.12.23-21.el6.s390x.rpm
  • gnutls-devel-2.12.23-21.el6.s390.rpm
  • gnutls-utils-2.12.23-21.el6.s390x.rpm
  • gnutls-utils-2.12.23-21.el6.x86_64.rpm
  • gnutls-2.12.23-21.el6.s390.rpm
  • gnutls-2.12.23-21.el6.i686.rpm
  • gnutls-2.12.23-21.el6.src.rpm
  • gnutls-2.12.23-21.el6.ppc.rpm
  • gnutls-devel-2.12.23-21.el6.s390x.rpm
  • gnutls-debuginfo-2.12.23-21.el6.ppc.rpm
  • gnutls-debuginfo-2.12.23-21.el6.s390x.rpm
  • gnutls-guile-2.12.23-21.el6.x86_64.rpm
  • gnutls-guile-2.12.23-21.el6.i686.rpm
  • gnutls-guile-2.12.23-21.el6.s390.rpm
  • gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm
  • gnutls-devel-2.12.23-21.el6.i686.rpm
  • gnutls-debuginfo-2.12.23-21.el6.ppc64.rpm
  • gnutls-debuginfo-2.12.23-21.el6.i686.rpm
  • gnutls-utils-2.12.23-21.el6.i686.rpm
  • gnutls-devel-2.12.23-21.el6.ppc.rpm
  • gnutls-guile-2.12.23-21.el6.ppc.rpm
  • gnutls-utils-2.12.23-21.el6.ppc64.rpm
  • gnutls-guile-2.12.23-21.el6.s390x.rpm

Fixes

CVEs

References

Additional information