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Security Advisory - Moderate: nss, nss-util, and nspr security, RH EL6

Offline TerryF

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Red Hat has released a security update for EL6 that will apply to Koozali SME9.#, it has been rated as Moderate.

Update will be available from upstream as appropriate.

See here for full notice: https://rhn.redhat.com/errata/RHSA-2016-0591.html

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                   Red Hat Security Advisory

Synopsis:          Moderate: nss, nss-util, and nspr security, bug fix, and enhancement update
Advisory ID:       RHSA-2016:0591-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-0591.html
Issue date:        2016-04-05
CVE Names:         CVE-2016-1978 CVE-2016-1979
=====================================================================

1. Summary:

An update for nss, nss-util, and nspr 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:

Network Security Services (NSS) is a set of libraries designed to support
the cross-platform development of security-enabled client and server
applications. The nss-util packages provide utilities for use with the
Network Security Services (NSS) libraries. Netscape Portable Runtime (NSPR)
provides platform independence for non-GUI operating system facilities.

The following packages have been upgraded to a newer upstream version: nss
3.21.0, nss-util 3.21.0, nspr 4.11.0. (BZ#1300629, BZ#1299874, BZ#1299861)

Security Fix(es):

* A use-after-free flaw was found in the way NSS handled DHE
(Diffie-Hellman key exchange) and ECDHE (Elliptic Curve Diffie-Hellman key
exchange) handshake messages. A remote attacker could send a specially
crafted handshake message that, when parsed by an application linked
against NSS, would cause that application to crash or, under certain
special conditions, execute arbitrary code using the permissions of the
user running the application. (CVE-2016-1978)

* A use-after-free flaw was found in the way NSS processed certain DER
(Distinguished Encoding Rules) encoded cryptographic keys. An attacker
could use this flaw to create a specially crafted DER encoded certificate
which, when parsed by an application compiled against the NSS library,
could cause that application to crash, or execute arbitrary code using the
permissions of the user running the application. (CVE-2016-1979)

Red Hat would like to thank the Mozilla Project for reporting these issues.
Upstream acknowledges Eric Rescorla as the original reporter of
CVE-2016-1978; and Tim Taubert as the original reporter of CVE-2016-1979.

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
--
qui scribit bis legit