Issued:

2010-03-25

Updated:

2010-03-25

RHSA-2010:0165 - Moderate: nss security update

Synopsis

Moderate: nss security update

Type/Severity

Security Advisory Moderate

Topic

Updated nss packages that fix a security issue are now available for Red Hat Enterprise Linux 4 and 5.

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. Applications built with NSS can support SSLv2, SSLv3, TLS, and other security standards.

Netscape Portable Runtime (NSPR) provides platform independence for non-GUI operating system facilities. These facilities include threads, thread synchronization, normal file and network I/O, interval timing, calendar time, basic memory management (malloc and free), and shared library linking.

A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure Sockets Layer) protocols handled session renegotiation. A man-in-the-middle attacker could use this flaw to prefix arbitrary plain text to a client's session (for example, an HTTPS connection to a website). This could force the server to process an attacker's request as if authenticated using the victim's credentials. This update addresses this flaw by implementing the TLS Renegotiation Indication Extension, as defined in RFC 5746. (CVE-2009-3555)

Refer to the following Knowledgebase article for additional details about this flaw: http://kbase.redhat.com/faq/docs/DOC-20491

Users of Red Hat Certificate System 7.3 and 8.0 should review the following Knowledgebase article before installing this update: This content is not included.http://kbase.redhat.com/faq/docs/DOC-28439

All users of NSS are advised to upgrade to these updated packages, which update NSS to version 3.12.6. This erratum also updates the NSPR packages to the version required by NSS 3.12.6. All running applications using the NSS library 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 This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

Updated Packages

• nspr-devel-4.8.4-1.1.el4_8.x86_64.rpm
• nss-3.12.6-1.el4_8.s390x.rpm
• nspr-4.8.4-1.el5_4.ppc64.rpm
• nss-pkcs11-devel-3.12.6-1.el5_4.s390.rpm
• nss-3.12.6-1.el5_4.s390.rpm
• nspr-4.8.4-1.el5_4.src.rpm
• nss-tools-3.12.6-1.el5_4.ppc.rpm
• nss-3.12.6-1.el4_8.ia64.rpm
• nss-tools-3.12.6-1.el4_8.s390x.rpm
• nspr-devel-4.8.4-1.1.el4_8.s390.rpm
• nspr-devel-4.8.4-1.el5_4.ppc.rpm
• nss-3.12.6-1.el5_4.ppc.rpm
• nss-devel-3.12.6-1.el5_4.ia64.rpm
• nss-tools-3.12.6-1.el5_4.s390x.rpm
• nss-devel-3.12.6-1.el4_8.ppc.rpm
• nspr-4.8.4-1.1.el4_8.ppc.rpm
• nss-tools-3.12.6-1.el4_8.x86_64.rpm
• nss-tools-3.12.6-1.el4_8.ia64.rpm
• nss-devel-3.12.6-1.el4_8.i386.rpm
• nss-devel-3.12.6-1.el5_4.ppc.rpm
• nspr-devel-4.8.4-1.el5_4.x86_64.rpm
• nss-3.12.6-1.el4_8.s390.rpm
• nspr-4.8.4-1.el5_4.i386.rpm
• nss-tools-3.12.6-1.el5_4.x86_64.rpm
• nspr-4.8.4-1.el5_4.x86_64.rpm
• nss-3.12.6-1.el5_4.ppc64.rpm
• nspr-devel-4.8.4-1.el5_4.ia64.rpm
• nspr-4.8.4-1.1.el4_8.x86_64.rpm
• nss-3.12.6-1.el4_8.x86_64.rpm
• nss-devel-3.12.6-1.el4_8.ia64.rpm
• nspr-devel-4.8.4-1.1.el4_8.ppc.rpm
• nss-3.12.6-1.el4_8.i386.rpm
• nspr-devel-4.8.4-1.1.el4_8.ia64.rpm
• nss-tools-3.12.6-1.el4_8.i386.rpm
• nspr-devel-4.8.4-1.1.el4_8.i386.rpm
• nspr-devel-4.8.4-1.1.el4_8.s390x.rpm
• nss-3.12.6-1.el5_4.x86_64.rpm
• nss-3.12.6-1.el4_8.ppc.rpm
• nspr-4.8.4-1.1.el4_8.src.rpm
• nss-devel-3.12.6-1.el4_8.s390.rpm
• nss-devel-3.12.6-1.el4_8.s390x.rpm
• nspr-4.8.4-1.1.el4_8.ia64.rpm
• nss-devel-3.12.6-1.el5_4.ppc64.rpm
• nss-pkcs11-devel-3.12.6-1.el5_4.s390x.rpm
• nss-3.12.6-1.el5_4.s390x.rpm
• nspr-4.8.4-1.el5_4.ppc.rpm
• nspr-devel-4.8.4-1.el5_4.i386.rpm
• nss-tools-3.12.6-1.el5_4.i386.rpm
• nss-devel-3.12.6-1.el5_4.s390.rpm
• nss-3.12.6-1.el5_4.ia64.rpm
• nss-devel-3.12.6-1.el5_4.i386.rpm
• nspr-devel-4.8.4-1.el5_4.ppc64.rpm
• nspr-4.8.4-1.1.el4_8.i386.rpm
• nss-pkcs11-devel-3.12.6-1.el5_4.ppc.rpm
• nspr-4.8.4-1.1.el4_8.s390.rpm
• nss-3.12.6-1.el4_8.ppc64.rpm
• nss-tools-3.12.6-1.el4_8.s390.rpm
• nss-devel-3.12.6-1.el4_8.x86_64.rpm
• nss-3.12.6-1.el5_4.i386.rpm
• nspr-4.8.4-1.el5_4.s390.rpm
• nss-pkcs11-devel-3.12.6-1.el5_4.ppc64.rpm
• nss-devel-3.12.6-1.el5_4.x86_64.rpm
• nss-3.12.6-1.el5_4.src.rpm
• nss-3.12.6-1.el4_8.src.rpm
• nss-tools-3.12.6-1.el4_8.ppc.rpm
• nspr-devel-4.8.4-1.el5_4.s390.rpm
• nss-devel-3.12.6-1.el5_4.s390x.rpm
• nss-tools-3.12.6-1.el5_4.ia64.rpm
• nspr-4.8.4-1.el5_4.ia64.rpm
• nspr-devel-4.8.4-1.el5_4.s390x.rpm
• nspr-4.8.4-1.1.el4_8.s390x.rpm
• nspr-4.8.4-1.el5_4.s390x.rpm
• nspr-4.8.4-1.1.el4_8.ppc64.rpm
• nss-pkcs11-devel-3.12.6-1.el5_4.x86_64.rpm
• nss-pkcs11-devel-3.12.6-1.el5_4.i386.rpm
• nss-pkcs11-devel-3.12.6-1.el5_4.ia64.rpm

Fixes

• This content is not included.BZ - 533125

CVEs

• CVE-2009-3555

References

• http://www.redhat.com/security/updates/classification/#moderate
• This content is not included.This content is not included.http://kbase.redhat.com/faq/docs/DOC-20491
• This content is not included.This content is not included.http://kbase.redhat.com/faq/docs/DOC-28439

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.