RHBA-2014:1419 - Bug Fix Advisory

Topic

Updated libtirpc packages that fix several bugs are now available for Red Hat
Enterprise Linux 6.

Description

The libtirpc packages contain SunLib's implementation of transport independent
RPC (TI-RPC) documentation. This includes a library required by programs in the
nfs-utils and rpcbind packages.

This update fixes the following bugs:

• Previously, the libtirpc library included the authgss_get_private_data()

system call, but not the authgss_free_private_data() system call. As a
consequence, private data were obtained but not freed afterwards. This caused
the authgss_destroy_context() call to send an incorrect RPCSEC_GSS_DESTROY
request, and the client was in turn not able to clear the state data on the
server. With this update, authgss_free_private_data() has been added to
libtirpc, and the data is now freed correctly. As a result, the client can now
reset the server state as expected. (BZ#1082807)

• Prior to this update, due to race conditions, using TI-RPC in the glibc

library caused TI-RPC to terminate unexpectedly with a segmentation fault on
some file operations, such as fclose() call and the endnetconfig() call. This
update prevents the race conditions from occurring in the above scenario, and
TI-RPC thus no longer crashes when used in glibc. (BZ#1031498)

• Due to buffer overruns in libtrpc, the rpcbind utility sometimes terminated

unexpectedly with a segmentation fault. With this update, buffer is allocated by
the svcauth_gss_validate() call, which avoids the buffer overruns and thus
prevents the rpcbind crashes. (BZ#1056809)

• Previously, the libtirpc-devel RPM incorrectly installed the /lib64/libtirpc.a

and /lib64/libtirpc.la static libraries, which caused compiling software that
linked libtirpc to fail. This update removes libtirpc.a and libtirpc.la and
compiling with libtirpc.so now works as expected. (BZ#869397)

• Due to a code error in libtirpc, the automount utility sometimes terminated

unexpectedly with a segmentation fault when a RPC was rejected with an invalid
rejection status. This update fixes this bug and automount no longer crashes
when receiving an invalid server rejection. (BZ#982064)

Users of libtirpc 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/site/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

CVEs

(none)

References

(none)