====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: nss security update
Advisory ID:       RHSA-2015:1185-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2015:1185.html
Issue date:        2015-06-25
CVE Names:         CVE-2015-4000 
====================================================================
1. Summary:

Updated nss and nss-util packages that fix one security issue, several bugs
and add various enhancements are now available for Red Hat Enterprise Linux
6 and 7.

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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
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 (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

Network Security Services (NSS) is a set of libraries designed to support 
cross-platform development of security-enabled client and server
applications.

A flaw was found in the way the TLS protocol composes the Diffie-Hellman
(DH) key exchange. A man-in-the-middle attacker could use this flaw to
force the use of weak 512 bit export-grade keys during the key exchange,
allowing them do decrypt all traffic. (CVE-2015-4000)

Note: This update forces the TLS/SSL client implementation in NSS to
reject DH key sizes below 768 bits, which prevents sessions to be
downgraded to export-grade keys. Future updates may raise this limit to
1024 bits.

The nss and nss-util packages have been upgraded to upstream versions
3.19.1. The upgraded versions provide a number of bug fixes and
enhancements over the previous versions.

Users of nss and nss-util are advised to upgrade to these updated packages,
which fix these security flaws, bugs, and add these enhancements.

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/):

1223211 - CVE-2015-4000 LOGJAM: TLS connections which support export grade DHE key-exchange are vulnerable to MITM attacks

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
nss-3.19.1-3.el6_6.src.rpm
nss-util-3.19.1-1.el6_6.src.rpm

i386:
nss-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-sysinit-3.19.1-3.el6_6.i686.rpm
nss-tools-3.19.1-3.el6_6.i686.rpm
nss-util-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm

x86_64:
nss-3.19.1-3.el6_6.i686.rpm
nss-3.19.1-3.el6_6.x86_64.rpm
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm
nss-sysinit-3.19.1-3.el6_6.x86_64.rpm
nss-tools-3.19.1-3.el6_6.x86_64.rpm
nss-util-3.19.1-1.el6_6.i686.rpm
nss-util-3.19.1-1.el6_6.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm

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

i386:
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-devel-3.19.1-3.el6_6.i686.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-devel-3.19.1-1.el6_6.i686.rpm

x86_64:
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm
nss-devel-3.19.1-3.el6_6.i686.rpm
nss-devel-3.19.1-3.el6_6.x86_64.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm
nss-util-devel-3.19.1-1.el6_6.i686.rpm
nss-util-devel-3.19.1-1.el6_6.x86_64.rpm

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

Source:
nss-3.19.1-3.el6_6.src.rpm
nss-util-3.19.1-1.el6_6.src.rpm

x86_64:
nss-3.19.1-3.el6_6.i686.rpm
nss-3.19.1-3.el6_6.x86_64.rpm
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm
nss-sysinit-3.19.1-3.el6_6.x86_64.rpm
nss-tools-3.19.1-3.el6_6.x86_64.rpm
nss-util-3.19.1-1.el6_6.i686.rpm
nss-util-3.19.1-1.el6_6.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm

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

x86_64:
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm
nss-devel-3.19.1-3.el6_6.i686.rpm
nss-devel-3.19.1-3.el6_6.x86_64.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm
nss-util-devel-3.19.1-1.el6_6.i686.rpm
nss-util-devel-3.19.1-1.el6_6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
nss-3.19.1-3.el6_6.src.rpm
nss-util-3.19.1-1.el6_6.src.rpm

i386:
nss-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-devel-3.19.1-3.el6_6.i686.rpm
nss-sysinit-3.19.1-3.el6_6.i686.rpm
nss-tools-3.19.1-3.el6_6.i686.rpm
nss-util-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-devel-3.19.1-1.el6_6.i686.rpm

ppc64:
nss-3.19.1-3.el6_6.ppc.rpm
nss-3.19.1-3.el6_6.ppc64.rpm
nss-debuginfo-3.19.1-3.el6_6.ppc.rpm
nss-debuginfo-3.19.1-3.el6_6.ppc64.rpm
nss-devel-3.19.1-3.el6_6.ppc.rpm
nss-devel-3.19.1-3.el6_6.ppc64.rpm
nss-sysinit-3.19.1-3.el6_6.ppc64.rpm
nss-tools-3.19.1-3.el6_6.ppc64.rpm
nss-util-3.19.1-1.el6_6.ppc.rpm
nss-util-3.19.1-1.el6_6.ppc64.rpm
nss-util-debuginfo-3.19.1-1.el6_6.ppc.rpm
nss-util-debuginfo-3.19.1-1.el6_6.ppc64.rpm
nss-util-devel-3.19.1-1.el6_6.ppc.rpm
nss-util-devel-3.19.1-1.el6_6.ppc64.rpm

s390x:
nss-3.19.1-3.el6_6.s390.rpm
nss-3.19.1-3.el6_6.s390x.rpm
nss-debuginfo-3.19.1-3.el6_6.s390.rpm
nss-debuginfo-3.19.1-3.el6_6.s390x.rpm
nss-devel-3.19.1-3.el6_6.s390.rpm
nss-devel-3.19.1-3.el6_6.s390x.rpm
nss-sysinit-3.19.1-3.el6_6.s390x.rpm
nss-tools-3.19.1-3.el6_6.s390x.rpm
nss-util-3.19.1-1.el6_6.s390.rpm
nss-util-3.19.1-1.el6_6.s390x.rpm
nss-util-debuginfo-3.19.1-1.el6_6.s390.rpm
nss-util-debuginfo-3.19.1-1.el6_6.s390x.rpm
nss-util-devel-3.19.1-1.el6_6.s390.rpm
nss-util-devel-3.19.1-1.el6_6.s390x.rpm

x86_64:
nss-3.19.1-3.el6_6.i686.rpm
nss-3.19.1-3.el6_6.x86_64.rpm
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm
nss-devel-3.19.1-3.el6_6.i686.rpm
nss-devel-3.19.1-3.el6_6.x86_64.rpm
nss-sysinit-3.19.1-3.el6_6.x86_64.rpm
nss-tools-3.19.1-3.el6_6.x86_64.rpm
nss-util-3.19.1-1.el6_6.i686.rpm
nss-util-3.19.1-1.el6_6.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm
nss-util-devel-3.19.1-1.el6_6.i686.rpm
nss-util-devel-3.19.1-1.el6_6.x86_64.rpm

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

i386:
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm

ppc64:
nss-debuginfo-3.19.1-3.el6_6.ppc.rpm
nss-debuginfo-3.19.1-3.el6_6.ppc64.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.ppc.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.ppc64.rpm

s390x:
nss-debuginfo-3.19.1-3.el6_6.s390.rpm
nss-debuginfo-3.19.1-3.el6_6.s390x.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.s390.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.s390x.rpm

x86_64:
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
nss-3.19.1-3.el6_6.src.rpm
nss-util-3.19.1-1.el6_6.src.rpm

i386:
nss-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-devel-3.19.1-3.el6_6.i686.rpm
nss-sysinit-3.19.1-3.el6_6.i686.rpm
nss-tools-3.19.1-3.el6_6.i686.rpm
nss-util-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-devel-3.19.1-1.el6_6.i686.rpm

x86_64:
nss-3.19.1-3.el6_6.i686.rpm
nss-3.19.1-3.el6_6.x86_64.rpm
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm
nss-devel-3.19.1-3.el6_6.i686.rpm
nss-devel-3.19.1-3.el6_6.x86_64.rpm
nss-sysinit-3.19.1-3.el6_6.x86_64.rpm
nss-tools-3.19.1-3.el6_6.x86_64.rpm
nss-util-3.19.1-1.el6_6.i686.rpm
nss-util-3.19.1-1.el6_6.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm
nss-util-devel-3.19.1-1.el6_6.i686.rpm
nss-util-devel-3.19.1-1.el6_6.x86_64.rpm

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

i386:
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm

x86_64:
nss-debuginfo-3.19.1-3.el6_6.i686.rpm
nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm
nss-pkcs11-devel-3.19.1-3.el6_6.x86_64.rpm

Red Hat Enterprise Linux Client (v. 7):

Source:
nss-3.19.1-3.el7_1.src.rpm
nss-util-3.19.1-1.el7_1.src.rpm

x86_64:
nss-3.19.1-3.el7_1.i686.rpm
nss-3.19.1-3.el7_1.x86_64.rpm
nss-debuginfo-3.19.1-3.el7_1.i686.rpm
nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm
nss-sysinit-3.19.1-3.el7_1.x86_64.rpm
nss-tools-3.19.1-3.el7_1.x86_64.rpm
nss-util-3.19.1-1.el7_1.i686.rpm
nss-util-3.19.1-1.el7_1.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm
nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
nss-debuginfo-3.19.1-3.el7_1.i686.rpm
nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm
nss-devel-3.19.1-3.el7_1.i686.rpm
nss-devel-3.19.1-3.el7_1.x86_64.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.i686.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm
nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm
nss-util-devel-3.19.1-1.el7_1.i686.rpm
nss-util-devel-3.19.1-1.el7_1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
nss-3.19.1-3.el7_1.src.rpm
nss-util-3.19.1-1.el7_1.src.rpm

x86_64:
nss-3.19.1-3.el7_1.i686.rpm
nss-3.19.1-3.el7_1.x86_64.rpm
nss-debuginfo-3.19.1-3.el7_1.i686.rpm
nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm
nss-sysinit-3.19.1-3.el7_1.x86_64.rpm
nss-tools-3.19.1-3.el7_1.x86_64.rpm
nss-util-3.19.1-1.el7_1.i686.rpm
nss-util-3.19.1-1.el7_1.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm
nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
nss-debuginfo-3.19.1-3.el7_1.i686.rpm
nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm
nss-devel-3.19.1-3.el7_1.i686.rpm
nss-devel-3.19.1-3.el7_1.x86_64.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.i686.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm
nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm
nss-util-devel-3.19.1-1.el7_1.i686.rpm
nss-util-devel-3.19.1-1.el7_1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
nss-3.19.1-3.el7_1.src.rpm
nss-util-3.19.1-1.el7_1.src.rpm

ppc64:
nss-3.19.1-3.el7_1.ppc.rpm
nss-3.19.1-3.el7_1.ppc64.rpm
nss-debuginfo-3.19.1-3.el7_1.ppc.rpm
nss-debuginfo-3.19.1-3.el7_1.ppc64.rpm
nss-devel-3.19.1-3.el7_1.ppc.rpm
nss-devel-3.19.1-3.el7_1.ppc64.rpm
nss-sysinit-3.19.1-3.el7_1.ppc64.rpm
nss-tools-3.19.1-3.el7_1.ppc64.rpm
nss-util-3.19.1-1.el7_1.ppc.rpm
nss-util-3.19.1-1.el7_1.ppc64.rpm
nss-util-debuginfo-3.19.1-1.el7_1.ppc.rpm
nss-util-debuginfo-3.19.1-1.el7_1.ppc64.rpm
nss-util-devel-3.19.1-1.el7_1.ppc.rpm
nss-util-devel-3.19.1-1.el7_1.ppc64.rpm

s390x:
nss-3.19.1-3.el7_1.s390.rpm
nss-3.19.1-3.el7_1.s390x.rpm
nss-debuginfo-3.19.1-3.el7_1.s390.rpm
nss-debuginfo-3.19.1-3.el7_1.s390x.rpm
nss-devel-3.19.1-3.el7_1.s390.rpm
nss-devel-3.19.1-3.el7_1.s390x.rpm
nss-sysinit-3.19.1-3.el7_1.s390x.rpm
nss-tools-3.19.1-3.el7_1.s390x.rpm
nss-util-3.19.1-1.el7_1.s390.rpm
nss-util-3.19.1-1.el7_1.s390x.rpm
nss-util-debuginfo-3.19.1-1.el7_1.s390.rpm
nss-util-debuginfo-3.19.1-1.el7_1.s390x.rpm
nss-util-devel-3.19.1-1.el7_1.s390.rpm
nss-util-devel-3.19.1-1.el7_1.s390x.rpm

x86_64:
nss-3.19.1-3.el7_1.i686.rpm
nss-3.19.1-3.el7_1.x86_64.rpm
nss-debuginfo-3.19.1-3.el7_1.i686.rpm
nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm
nss-devel-3.19.1-3.el7_1.i686.rpm
nss-devel-3.19.1-3.el7_1.x86_64.rpm
nss-sysinit-3.19.1-3.el7_1.x86_64.rpm
nss-tools-3.19.1-3.el7_1.x86_64.rpm
nss-util-3.19.1-1.el7_1.i686.rpm
nss-util-3.19.1-1.el7_1.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm
nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm
nss-util-devel-3.19.1-1.el7_1.i686.rpm
nss-util-devel-3.19.1-1.el7_1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
nss-3.19.1-3.ael7b_1.src.rpm
nss-util-3.19.1-1.ael7b_1.src.rpm

ppc64le:
nss-3.19.1-3.ael7b_1.ppc64le.rpm
nss-debuginfo-3.19.1-3.ael7b_1.ppc64le.rpm
nss-devel-3.19.1-3.ael7b_1.ppc64le.rpm
nss-sysinit-3.19.1-3.ael7b_1.ppc64le.rpm
nss-tools-3.19.1-3.ael7b_1.ppc64le.rpm
nss-util-3.19.1-1.ael7b_1.ppc64le.rpm
nss-util-debuginfo-3.19.1-1.ael7b_1.ppc64le.rpm
nss-util-devel-3.19.1-1.ael7b_1.ppc64le.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
nss-debuginfo-3.19.1-3.el7_1.ppc.rpm
nss-debuginfo-3.19.1-3.el7_1.ppc64.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.ppc.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.ppc64.rpm

s390x:
nss-debuginfo-3.19.1-3.el7_1.s390.rpm
nss-debuginfo-3.19.1-3.el7_1.s390x.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.s390.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.s390x.rpm

x86_64:
nss-debuginfo-3.19.1-3.el7_1.i686.rpm
nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.i686.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64le:
nss-debuginfo-3.19.1-3.ael7b_1.ppc64le.rpm
nss-pkcs11-devel-3.19.1-3.ael7b_1.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
nss-3.19.1-3.el7_1.src.rpm
nss-util-3.19.1-1.el7_1.src.rpm

x86_64:
nss-3.19.1-3.el7_1.i686.rpm
nss-3.19.1-3.el7_1.x86_64.rpm
nss-debuginfo-3.19.1-3.el7_1.i686.rpm
nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm
nss-devel-3.19.1-3.el7_1.i686.rpm
nss-devel-3.19.1-3.el7_1.x86_64.rpm
nss-sysinit-3.19.1-3.el7_1.x86_64.rpm
nss-tools-3.19.1-3.el7_1.x86_64.rpm
nss-util-3.19.1-1.el7_1.i686.rpm
nss-util-3.19.1-1.el7_1.x86_64.rpm
nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm
nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm
nss-util-devel-3.19.1-1.el7_1.i686.rpm
nss-util-devel-3.19.1-1.el7_1.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
nss-debuginfo-3.19.1-3.el7_1.i686.rpm
nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.i686.rpm
nss-pkcs11-devel-3.19.1-3.el7_1.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-2015-4000
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.

Red Hat: 2015:1185-01: nss: Moderate Advisory

Updated nss and nss-util packages that fix one security issue, several bugs and add various enhancements are now available for Red Hat Enterprise Linux 6 and 7

Summary

Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and server applications.
A flaw was found in the way the TLS protocol composes the Diffie-Hellman (DH) key exchange. A man-in-the-middle attacker could use this flaw to force the use of weak 512 bit export-grade keys during the key exchange, allowing them do decrypt all traffic. (CVE-2015-4000)
Note: This update forces the TLS/SSL client implementation in NSS to reject DH key sizes below 768 bits, which prevents sessions to be downgraded to export-grade keys. Future updates may raise this limit to 1024 bits.
The nss and nss-util packages have been upgraded to upstream versions 3.19.1. The upgraded versions provide a number of bug fixes and enhancements over the previous versions.
Users of nss and nss-util are advised to upgrade to these updated packages, which fix these security flaws, bugs, and add these enhancements.



Summary


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

References

https://access.redhat.com/security/cve/CVE-2015-4000 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: nss-3.19.1-3.el6_6.src.rpm nss-util-3.19.1-1.el6_6.src.rpm
i386: nss-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-sysinit-3.19.1-3.el6_6.i686.rpm nss-tools-3.19.1-3.el6_6.i686.rpm nss-util-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm
x86_64: nss-3.19.1-3.el6_6.i686.rpm nss-3.19.1-3.el6_6.x86_64.rpm nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm nss-sysinit-3.19.1-3.el6_6.x86_64.rpm nss-tools-3.19.1-3.el6_6.x86_64.rpm nss-util-3.19.1-1.el6_6.i686.rpm nss-util-3.19.1-1.el6_6.x86_64.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-devel-3.19.1-3.el6_6.i686.rpm nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-devel-3.19.1-1.el6_6.i686.rpm
x86_64: nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm nss-devel-3.19.1-3.el6_6.i686.rpm nss-devel-3.19.1-3.el6_6.x86_64.rpm nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm nss-pkcs11-devel-3.19.1-3.el6_6.x86_64.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm nss-util-devel-3.19.1-1.el6_6.i686.rpm nss-util-devel-3.19.1-1.el6_6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: nss-3.19.1-3.el6_6.src.rpm nss-util-3.19.1-1.el6_6.src.rpm
x86_64: nss-3.19.1-3.el6_6.i686.rpm nss-3.19.1-3.el6_6.x86_64.rpm nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm nss-sysinit-3.19.1-3.el6_6.x86_64.rpm nss-tools-3.19.1-3.el6_6.x86_64.rpm nss-util-3.19.1-1.el6_6.i686.rpm nss-util-3.19.1-1.el6_6.x86_64.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm nss-devel-3.19.1-3.el6_6.i686.rpm nss-devel-3.19.1-3.el6_6.x86_64.rpm nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm nss-pkcs11-devel-3.19.1-3.el6_6.x86_64.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm nss-util-devel-3.19.1-1.el6_6.i686.rpm nss-util-devel-3.19.1-1.el6_6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: nss-3.19.1-3.el6_6.src.rpm nss-util-3.19.1-1.el6_6.src.rpm
i386: nss-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-devel-3.19.1-3.el6_6.i686.rpm nss-sysinit-3.19.1-3.el6_6.i686.rpm nss-tools-3.19.1-3.el6_6.i686.rpm nss-util-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-devel-3.19.1-1.el6_6.i686.rpm
ppc64: nss-3.19.1-3.el6_6.ppc.rpm nss-3.19.1-3.el6_6.ppc64.rpm nss-debuginfo-3.19.1-3.el6_6.ppc.rpm nss-debuginfo-3.19.1-3.el6_6.ppc64.rpm nss-devel-3.19.1-3.el6_6.ppc.rpm nss-devel-3.19.1-3.el6_6.ppc64.rpm nss-sysinit-3.19.1-3.el6_6.ppc64.rpm nss-tools-3.19.1-3.el6_6.ppc64.rpm nss-util-3.19.1-1.el6_6.ppc.rpm nss-util-3.19.1-1.el6_6.ppc64.rpm nss-util-debuginfo-3.19.1-1.el6_6.ppc.rpm nss-util-debuginfo-3.19.1-1.el6_6.ppc64.rpm nss-util-devel-3.19.1-1.el6_6.ppc.rpm nss-util-devel-3.19.1-1.el6_6.ppc64.rpm
s390x: nss-3.19.1-3.el6_6.s390.rpm nss-3.19.1-3.el6_6.s390x.rpm nss-debuginfo-3.19.1-3.el6_6.s390.rpm nss-debuginfo-3.19.1-3.el6_6.s390x.rpm nss-devel-3.19.1-3.el6_6.s390.rpm nss-devel-3.19.1-3.el6_6.s390x.rpm nss-sysinit-3.19.1-3.el6_6.s390x.rpm nss-tools-3.19.1-3.el6_6.s390x.rpm nss-util-3.19.1-1.el6_6.s390.rpm nss-util-3.19.1-1.el6_6.s390x.rpm nss-util-debuginfo-3.19.1-1.el6_6.s390.rpm nss-util-debuginfo-3.19.1-1.el6_6.s390x.rpm nss-util-devel-3.19.1-1.el6_6.s390.rpm nss-util-devel-3.19.1-1.el6_6.s390x.rpm
x86_64: nss-3.19.1-3.el6_6.i686.rpm nss-3.19.1-3.el6_6.x86_64.rpm nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm nss-devel-3.19.1-3.el6_6.i686.rpm nss-devel-3.19.1-3.el6_6.x86_64.rpm nss-sysinit-3.19.1-3.el6_6.x86_64.rpm nss-tools-3.19.1-3.el6_6.x86_64.rpm nss-util-3.19.1-1.el6_6.i686.rpm nss-util-3.19.1-1.el6_6.x86_64.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm nss-util-devel-3.19.1-1.el6_6.i686.rpm nss-util-devel-3.19.1-1.el6_6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
i386: nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm
ppc64: nss-debuginfo-3.19.1-3.el6_6.ppc.rpm nss-debuginfo-3.19.1-3.el6_6.ppc64.rpm nss-pkcs11-devel-3.19.1-3.el6_6.ppc.rpm nss-pkcs11-devel-3.19.1-3.el6_6.ppc64.rpm
s390x: nss-debuginfo-3.19.1-3.el6_6.s390.rpm nss-debuginfo-3.19.1-3.el6_6.s390x.rpm nss-pkcs11-devel-3.19.1-3.el6_6.s390.rpm nss-pkcs11-devel-3.19.1-3.el6_6.s390x.rpm
x86_64: nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm nss-pkcs11-devel-3.19.1-3.el6_6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: nss-3.19.1-3.el6_6.src.rpm nss-util-3.19.1-1.el6_6.src.rpm
i386: nss-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-devel-3.19.1-3.el6_6.i686.rpm nss-sysinit-3.19.1-3.el6_6.i686.rpm nss-tools-3.19.1-3.el6_6.i686.rpm nss-util-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-devel-3.19.1-1.el6_6.i686.rpm
x86_64: nss-3.19.1-3.el6_6.i686.rpm nss-3.19.1-3.el6_6.x86_64.rpm nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm nss-devel-3.19.1-3.el6_6.i686.rpm nss-devel-3.19.1-3.el6_6.x86_64.rpm nss-sysinit-3.19.1-3.el6_6.x86_64.rpm nss-tools-3.19.1-3.el6_6.x86_64.rpm nss-util-3.19.1-1.el6_6.i686.rpm nss-util-3.19.1-1.el6_6.x86_64.rpm nss-util-debuginfo-3.19.1-1.el6_6.i686.rpm nss-util-debuginfo-3.19.1-1.el6_6.x86_64.rpm nss-util-devel-3.19.1-1.el6_6.i686.rpm nss-util-devel-3.19.1-1.el6_6.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
i386: nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm
x86_64: nss-debuginfo-3.19.1-3.el6_6.i686.rpm nss-debuginfo-3.19.1-3.el6_6.x86_64.rpm nss-pkcs11-devel-3.19.1-3.el6_6.i686.rpm nss-pkcs11-devel-3.19.1-3.el6_6.x86_64.rpm
Red Hat Enterprise Linux Client (v. 7):
Source: nss-3.19.1-3.el7_1.src.rpm nss-util-3.19.1-1.el7_1.src.rpm
x86_64: nss-3.19.1-3.el7_1.i686.rpm nss-3.19.1-3.el7_1.x86_64.rpm nss-debuginfo-3.19.1-3.el7_1.i686.rpm nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm nss-sysinit-3.19.1-3.el7_1.x86_64.rpm nss-tools-3.19.1-3.el7_1.x86_64.rpm nss-util-3.19.1-1.el7_1.i686.rpm nss-util-3.19.1-1.el7_1.x86_64.rpm nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: nss-debuginfo-3.19.1-3.el7_1.i686.rpm nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm nss-devel-3.19.1-3.el7_1.i686.rpm nss-devel-3.19.1-3.el7_1.x86_64.rpm nss-pkcs11-devel-3.19.1-3.el7_1.i686.rpm nss-pkcs11-devel-3.19.1-3.el7_1.x86_64.rpm nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm nss-util-devel-3.19.1-1.el7_1.i686.rpm nss-util-devel-3.19.1-1.el7_1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: nss-3.19.1-3.el7_1.src.rpm nss-util-3.19.1-1.el7_1.src.rpm
x86_64: nss-3.19.1-3.el7_1.i686.rpm nss-3.19.1-3.el7_1.x86_64.rpm nss-debuginfo-3.19.1-3.el7_1.i686.rpm nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm nss-sysinit-3.19.1-3.el7_1.x86_64.rpm nss-tools-3.19.1-3.el7_1.x86_64.rpm nss-util-3.19.1-1.el7_1.i686.rpm nss-util-3.19.1-1.el7_1.x86_64.rpm nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: nss-debuginfo-3.19.1-3.el7_1.i686.rpm nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm nss-devel-3.19.1-3.el7_1.i686.rpm nss-devel-3.19.1-3.el7_1.x86_64.rpm nss-pkcs11-devel-3.19.1-3.el7_1.i686.rpm nss-pkcs11-devel-3.19.1-3.el7_1.x86_64.rpm nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm nss-util-devel-3.19.1-1.el7_1.i686.rpm nss-util-devel-3.19.1-1.el7_1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: nss-3.19.1-3.el7_1.src.rpm nss-util-3.19.1-1.el7_1.src.rpm
ppc64: nss-3.19.1-3.el7_1.ppc.rpm nss-3.19.1-3.el7_1.ppc64.rpm nss-debuginfo-3.19.1-3.el7_1.ppc.rpm nss-debuginfo-3.19.1-3.el7_1.ppc64.rpm nss-devel-3.19.1-3.el7_1.ppc.rpm nss-devel-3.19.1-3.el7_1.ppc64.rpm nss-sysinit-3.19.1-3.el7_1.ppc64.rpm nss-tools-3.19.1-3.el7_1.ppc64.rpm nss-util-3.19.1-1.el7_1.ppc.rpm nss-util-3.19.1-1.el7_1.ppc64.rpm nss-util-debuginfo-3.19.1-1.el7_1.ppc.rpm nss-util-debuginfo-3.19.1-1.el7_1.ppc64.rpm nss-util-devel-3.19.1-1.el7_1.ppc.rpm nss-util-devel-3.19.1-1.el7_1.ppc64.rpm
s390x: nss-3.19.1-3.el7_1.s390.rpm nss-3.19.1-3.el7_1.s390x.rpm nss-debuginfo-3.19.1-3.el7_1.s390.rpm nss-debuginfo-3.19.1-3.el7_1.s390x.rpm nss-devel-3.19.1-3.el7_1.s390.rpm nss-devel-3.19.1-3.el7_1.s390x.rpm nss-sysinit-3.19.1-3.el7_1.s390x.rpm nss-tools-3.19.1-3.el7_1.s390x.rpm nss-util-3.19.1-1.el7_1.s390.rpm nss-util-3.19.1-1.el7_1.s390x.rpm nss-util-debuginfo-3.19.1-1.el7_1.s390.rpm nss-util-debuginfo-3.19.1-1.el7_1.s390x.rpm nss-util-devel-3.19.1-1.el7_1.s390.rpm nss-util-devel-3.19.1-1.el7_1.s390x.rpm
x86_64: nss-3.19.1-3.el7_1.i686.rpm nss-3.19.1-3.el7_1.x86_64.rpm nss-debuginfo-3.19.1-3.el7_1.i686.rpm nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm nss-devel-3.19.1-3.el7_1.i686.rpm nss-devel-3.19.1-3.el7_1.x86_64.rpm nss-sysinit-3.19.1-3.el7_1.x86_64.rpm nss-tools-3.19.1-3.el7_1.x86_64.rpm nss-util-3.19.1-1.el7_1.i686.rpm nss-util-3.19.1-1.el7_1.x86_64.rpm nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm nss-util-devel-3.19.1-1.el7_1.i686.rpm nss-util-devel-3.19.1-1.el7_1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: nss-3.19.1-3.ael7b_1.src.rpm nss-util-3.19.1-1.ael7b_1.src.rpm
ppc64le: nss-3.19.1-3.ael7b_1.ppc64le.rpm nss-debuginfo-3.19.1-3.ael7b_1.ppc64le.rpm nss-devel-3.19.1-3.ael7b_1.ppc64le.rpm nss-sysinit-3.19.1-3.ael7b_1.ppc64le.rpm nss-tools-3.19.1-3.ael7b_1.ppc64le.rpm nss-util-3.19.1-1.ael7b_1.ppc64le.rpm nss-util-debuginfo-3.19.1-1.ael7b_1.ppc64le.rpm nss-util-devel-3.19.1-1.ael7b_1.ppc64le.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64: nss-debuginfo-3.19.1-3.el7_1.ppc.rpm nss-debuginfo-3.19.1-3.el7_1.ppc64.rpm nss-pkcs11-devel-3.19.1-3.el7_1.ppc.rpm nss-pkcs11-devel-3.19.1-3.el7_1.ppc64.rpm
s390x: nss-debuginfo-3.19.1-3.el7_1.s390.rpm nss-debuginfo-3.19.1-3.el7_1.s390x.rpm nss-pkcs11-devel-3.19.1-3.el7_1.s390.rpm nss-pkcs11-devel-3.19.1-3.el7_1.s390x.rpm
x86_64: nss-debuginfo-3.19.1-3.el7_1.i686.rpm nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm nss-pkcs11-devel-3.19.1-3.el7_1.i686.rpm nss-pkcs11-devel-3.19.1-3.el7_1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64le: nss-debuginfo-3.19.1-3.ael7b_1.ppc64le.rpm nss-pkcs11-devel-3.19.1-3.ael7b_1.ppc64le.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: nss-3.19.1-3.el7_1.src.rpm nss-util-3.19.1-1.el7_1.src.rpm
x86_64: nss-3.19.1-3.el7_1.i686.rpm nss-3.19.1-3.el7_1.x86_64.rpm nss-debuginfo-3.19.1-3.el7_1.i686.rpm nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm nss-devel-3.19.1-3.el7_1.i686.rpm nss-devel-3.19.1-3.el7_1.x86_64.rpm nss-sysinit-3.19.1-3.el7_1.x86_64.rpm nss-tools-3.19.1-3.el7_1.x86_64.rpm nss-util-3.19.1-1.el7_1.i686.rpm nss-util-3.19.1-1.el7_1.x86_64.rpm nss-util-debuginfo-3.19.1-1.el7_1.i686.rpm nss-util-debuginfo-3.19.1-1.el7_1.x86_64.rpm nss-util-devel-3.19.1-1.el7_1.i686.rpm nss-util-devel-3.19.1-1.el7_1.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64: nss-debuginfo-3.19.1-3.el7_1.i686.rpm nss-debuginfo-3.19.1-3.el7_1.x86_64.rpm nss-pkcs11-devel-3.19.1-3.el7_1.i686.rpm nss-pkcs11-devel-3.19.1-3.el7_1.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/


Severity
Advisory ID: RHSA-2015:1185-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1185.html
Issued Date: : 2015-06-25
CVE Names: CVE-2015-4000

Topic

Updated nss and nss-util packages that fix one security issue, several bugsand add various enhancements are now available for Red Hat Enterprise Linux6 and 7.Red Hat Product Security has rated this update as having Moderate securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.


Topic


 

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

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 (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64


Bugs Fixed

1223211 - CVE-2015-4000 LOGJAM: TLS connections which support export grade DHE key-exchange are vulnerable to MITM attacks


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