RHBA-2013:0425 - Bug Fix Advisory

Topic

Updated gnutls packages that fix four bugs are now available for Red Hat
Enterprise Linux 6.

Description

The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library,
which implements cryptographic algorithms and protocols such as SSL, TLS, and
DTLS.

This update fixes the following bugs:

• Previously, the gnutls_priority_init.3 man page contained incorrect

information on the gnutls-2.8.5-safe-renegotiation patch, particularly on
special control keywords. The manual page has been updated to provide accurate
information about the described subject. (BZ#648297)

• Prior to this update, the gnutls_x509_privkey_import() function failed to load

private keys in the PKCS#8 format. Consequently, these keys were not processed
by applications which use gnutls_x509_privkey_import(). This bug has been fixed,
and gnutls_x509_privkey_import() now allows loading of private keys formatted in
PKCS#8. (BZ#745242)

• Multiple bugs were present in the implementation of the TLS-1.2 protocol in

the gnutls package. Consequently, gnutls was incompatible with clients and
servers conforming to the TLS-1.2 protocol standard. With this update, the
TLS-1.2 implementation has been fixed. As a result, the compatibility of gnutls
with other TLS-1.2 clients and servers is now assured. (BZ#771378)

• Previously, the gnutls-cli-debug man page contained typographical errors and

incorrect information on the command-line options. The manual page has been
updated, and no longer contains the aforementioned errors. (BZ#807746)

All users of gnutls are advised to upgrade to these updated packages, which fix
these bugs.

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 Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• 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 Power, big endian 6 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 (for IBM z Systems) 6 s390x

Fixes

• BZ - 648297 - gnutls: incorrect safe renegotiation special keyword documentation in gnutls_priority_init.3
• BZ - 745242 - Fallback to import the private keys as PKCS#8 if regular import fails
• BZ - 807746 - gnutls-cli-debug manpage typo
• BZ - 864817 - Fix strict aliasing warnings in serv.c

CVEs

(none)

References

(none)