RHSA-2012:1091 - Security Advisory

Topic

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

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

Description

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

A flaw was found in the way the ASN.1 (Abstract Syntax Notation One)
decoder in NSS handled zero length items. This flaw could cause the decoder
to incorrectly skip or replace certain items with a default value, or could
cause an application to crash if, for example, it received a
specially-crafted OCSP (Online Certificate Status Protocol) response.
(CVE-2012-0441)

The nspr package has been upgraded to upstream version 4.9.1, which
provides a number of bug fixes and enhancements over the previous version.
(BZ#833762)

The nss-util package has been upgraded to upstream version 3.13.5, which
provides a number of bug fixes and enhancements over the previous version.
(BZ#833763)

The nss package has been upgraded to upstream version 3.13.5, which
provides a number of bug fixes and enhancements over the previous version.
(BZ#834100)

All NSS, NSPR, and nss-util users are advised to upgrade to these updated
packages, which correct these issues and add these enhancements. After
installing this update, applications using NSS, NSPR, or nss-util must be
restarted for this update to take effect.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.3 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.3 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.3 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.3 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.3 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.3 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 827833 - CVE-2012-0441 nss: NSS parsing errors with zero length items
• BZ - 833762 - Update RHEL 6.x to NSPR 4.9.1 for Mozilla 10.0.6
• BZ - 833763 - Update nss-util on RHEL 6.x to NSS 3.13.5 for Mozilla 10.0.6
• BZ - 834100 - Update RHEL 6.x to NSS 3.13.5 and NSPR 4.9.1 for Mozilla 10.0.6

CVEs

• CVE-2012-0441

References

• https://access.redhat.com/security/updates/classification/#moderate
• http://www.mozilla.org/security/announce/2012/mfsa2012-39.html