Scientific Linux Security Update : nss, nss-util, and nspr on SL6.x i386/x86_64

This script is Copyright (C) 2012 Tenable Network Security, Inc.

Synopsis :

The remote Scientific Linux host is missing one or more security

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.

It was found that a Certificate Authority (CA) issued a subordinate CA
certificate to its customer, that could be used to issue certificates
for any name. This update renders the subordinate CA certificate as

Note: This fix only applies to applications using the NSS Builtin
Object Token. It does not render the certificates untrusted for
applications that use the NSS library, but do not use the NSS Builtin
Object Token.

The nspr package has been upgraded to upstream version 4.9, which
provides a number of bug fixes and enhancements over the previous

The nss-util package has been upgraded to upstream version 3.13.3,
which provides a number of bug fixes and enhancements over the
previous version.

The nss package has been upgraded to upstream version 3.13.3, which
provides numerous bug fixes and enhancements over the previous
version. In particular, SSL 2.0 is now disabled by default, support
for SHA-224 has been added, PORT_ErrorToString and PORT_ErrorToName
now return the error message and symbolic name of an NSS error code,
and NSS_GetVersion now returns the NSS version string.

These updated nss, nss-util, and nspr packages also provide fixes for
the following bugs :

- A PEM module internal function did not clean up memory
when detecting a non-existent file name. Consequently,
memory leaks in client code occurred. The code has been
improved to deallocate such temporary objects and as a
result the reported memory leakage is gone.

- Recent changes to NSS re-introduced a problem where
applications could not use multiple SSL client
certificates in the same process. Therefore, any attempt
to run commands that worked with multiple SSL client
certificates, such as the 'yum repolist' command,
resulted in a re-negotiation handshake failure. With
this update, a revised patch correcting this problem has
been applied to NSS, and using multiple SSL client
certificates in the same process is now possible again.

- The PEM module did not fully initialize newly
constructed objects with function pointers set to NULL.
Consequently, a segmentation violation in libcurl was
sometimes experienced while accessing a package
repository. With this update, the code has been changed
to fully initialize newly allocated objects. As a
result, updates can now be installed without problems.

- A lack-of-robustness flaw caused some administration
servers to terminate unexpectedly because the mod_nss
module made nss calls before initializing nss as per the
documented API. With this update, nss protects itself
against being called before it has been properly
initialized by the caller.

- Compilation errors occurred with some compilers when
compiling code against NSS 3.13.1. The following error
message was displayed :

pkcs11n.h:365:26: warning: '__GNUC_MINOR' is not defined

An upstream patch has been applied to improve the code and the problem
no longer occurs.

- Unexpected terminations were reported in the messaging
daemon (qpidd) included in Red Hat Enterprise MRG after
a recent update to nss. This occurred because qpidd made
nss calls before initializing nss. These updated
packages prevent qpidd and other affected processes that
call nss without initializing as mandated by the API
from crashing.

Users of NSS, NSPR, and nss-util are advised to upgrade to these
updated packages, which fix 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.

See also :

Solution :

Update the affected packages.

Risk factor :


Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 61343 ()

Bugtraq ID:


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