[RHSA-2017:0574-01] Moderate: gnutls security, bug fix, and enhancement update

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Red Hat Security Advisory

 

Synopsis: Moderate: gnutls security, bug fix, and enhancement update

Advisory ID: RHSA-2017:0574-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0574.html

Issue date: 2017-03-21

CVE Names: CVE-2016-8610 CVE-2017-5335 CVE-2017-5336

CVE-2017-5337

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1. Summary:

 

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.

 

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 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.

 

4. 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

 

5. Bugs fixed (https://bugzilla.redhat.com/):

 

1320982 - ASSERT failure in gnutls-cli-debug

1321112 - DHE_DSS ciphers don't work with client certificates and OpenSSL using TLSv1.2

1323215 - gnutls-serv --http crashes with client certificates with NSS client

1326073 - GnuTLS prefers SHA-1 signatures in TLSv1.2

1326389 - GnuTLS server does not accept SHA-384 and SHA-512 Certificate Verify signatures despite advertising support for them

1326886 - GnuTLS server rejects connections that do not advertise support for SHA-1 signature algorithms

1327656 - gnutls-serv: closing connection without sending an Alert message

1328205 - gnutls-cli won't send certificates that don't match hashes in Certificate Request

1333521 - Provide ability to set the expected server name in gnutls-serv utility

1335924 - gnutls: Disable TLS connections with less than 1024-bit DH parameters

1337460 - Disable/remove export ciphersuites in GnuTLS

1384743 - CVE-2016-8610 SSL/TLS: Malformed plain-text ALERT packets could cause remote DoS

1411836 - CVE-2017-5337 gnutls: Heap read overflow in read-packet.c

1412235 - CVE-2017-5335 gnutls: Out of memory while parsing crafted OpenPGP certificate

1412236 - CVE-2017-5336 gnutls: Stack overflow in cdk_pk_get_keyid

1415682 - Changes introduced by rebase to 2.12.23 break API and ABI compatibility for some libraries

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

gnutls-2.12.23-21.el6.src.rpm

 

i386:

gnutls-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-utils-2.12.23-21.el6.i686.rpm

 

x86_64:

gnutls-2.12.23-21.el6.i686.rpm

gnutls-2.12.23-21.el6.x86_64.rpm

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm

gnutls-utils-2.12.23-21.el6.x86_64.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

i386:

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-devel-2.12.23-21.el6.i686.rpm

gnutls-guile-2.12.23-21.el6.i686.rpm

 

x86_64:

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm

gnutls-devel-2.12.23-21.el6.i686.rpm

gnutls-devel-2.12.23-21.el6.x86_64.rpm

gnutls-guile-2.12.23-21.el6.i686.rpm

gnutls-guile-2.12.23-21.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

gnutls-2.12.23-21.el6.src.rpm

 

x86_64:

gnutls-2.12.23-21.el6.i686.rpm

gnutls-2.12.23-21.el6.x86_64.rpm

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm

gnutls-utils-2.12.23-21.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

x86_64:

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm

gnutls-devel-2.12.23-21.el6.i686.rpm

gnutls-devel-2.12.23-21.el6.x86_64.rpm

gnutls-guile-2.12.23-21.el6.i686.rpm

gnutls-guile-2.12.23-21.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

gnutls-2.12.23-21.el6.src.rpm

 

i386:

gnutls-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-devel-2.12.23-21.el6.i686.rpm

gnutls-utils-2.12.23-21.el6.i686.rpm

 

ppc64:

gnutls-2.12.23-21.el6.ppc.rpm

gnutls-2.12.23-21.el6.ppc64.rpm

gnutls-debuginfo-2.12.23-21.el6.ppc.rpm

gnutls-debuginfo-2.12.23-21.el6.ppc64.rpm

gnutls-devel-2.12.23-21.el6.ppc.rpm

gnutls-devel-2.12.23-21.el6.ppc64.rpm

gnutls-utils-2.12.23-21.el6.ppc64.rpm

 

s390x:

gnutls-2.12.23-21.el6.s390.rpm

gnutls-2.12.23-21.el6.s390x.rpm

gnutls-debuginfo-2.12.23-21.el6.s390.rpm

gnutls-debuginfo-2.12.23-21.el6.s390x.rpm

gnutls-devel-2.12.23-21.el6.s390.rpm

gnutls-devel-2.12.23-21.el6.s390x.rpm

gnutls-utils-2.12.23-21.el6.s390x.rpm

 

x86_64:

gnutls-2.12.23-21.el6.i686.rpm

gnutls-2.12.23-21.el6.x86_64.rpm

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm

gnutls-devel-2.12.23-21.el6.i686.rpm

gnutls-devel-2.12.23-21.el6.x86_64.rpm

gnutls-utils-2.12.23-21.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

i386:

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-guile-2.12.23-21.el6.i686.rpm

 

ppc64:

gnutls-debuginfo-2.12.23-21.el6.ppc.rpm

gnutls-debuginfo-2.12.23-21.el6.ppc64.rpm

gnutls-guile-2.12.23-21.el6.ppc.rpm

gnutls-guile-2.12.23-21.el6.ppc64.rpm

 

s390x:

gnutls-debuginfo-2.12.23-21.el6.s390.rpm

gnutls-debuginfo-2.12.23-21.el6.s390x.rpm

gnutls-guile-2.12.23-21.el6.s390.rpm

gnutls-guile-2.12.23-21.el6.s390x.rpm

 

x86_64:

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm

gnutls-guile-2.12.23-21.el6.i686.rpm

gnutls-guile-2.12.23-21.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

gnutls-2.12.23-21.el6.src.rpm

 

i386:

gnutls-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-devel-2.12.23-21.el6.i686.rpm

gnutls-utils-2.12.23-21.el6.i686.rpm

 

x86_64:

gnutls-2.12.23-21.el6.i686.rpm

gnutls-2.12.23-21.el6.x86_64.rpm

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm

gnutls-devel-2.12.23-21.el6.i686.rpm

gnutls-devel-2.12.23-21.el6.x86_64.rpm

gnutls-utils-2.12.23-21.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

i386:

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-guile-2.12.23-21.el6.i686.rpm

 

x86_64:

gnutls-debuginfo-2.12.23-21.el6.i686.rpm

gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm

gnutls-guile-2.12.23-21.el6.i686.rpm

gnutls-guile-2.12.23-21.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-2016-8610

https://access.redhat.com/security/cve/CVE-2017-5335

https://access.redhat.com/security/cve/CVE-2017-5336

https://access.redhat.com/security/cve/CVE-2017-5337

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Release_Notes/index.html

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Technical_Notes/index.html

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2017 Red Hat, Inc.

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