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Red Hat Product Errata RHBA-2013:0408 - Bug Fix Advisory
Issued:
2013-02-20
Updated:
2013-02-20

RHBA-2013:0408 - Bug Fix Advisory

  • Overview
  • Updated Packages

Synopsis

cifs-utils bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

Updated cifs-utils packages that fix several bugs and add various enhancements
are now available for Red Hat Enterprise Linux 6.

Description

The SMB/CIFS protocol is a standard file sharing protocol widely deployed on
Microsoft Windows machines. This package contains tools for mounting shares on
Linux using the SMB/CIFS protocol. The tools in this package work in conjunction
with support in the kernel to allow one to mount a SMB/CIFS share onto a client
and use it as if it were a standard Linux file system.

This update fixes the following bugs:

  • When the mount.cifs utility ran out of addresses to try, it returned the

"System error" error code (EX_SYSERR) to the caller service. The utility has
been modified and it now correctly returns the "Mount failure" error code
(EX_FAIL). (BZ#856729)

  • Typically, "/" characters are not allowed in user names for Microsoft Windows

systems, but they are common in certain types of kerberos principal names.
However, mount.cifs previously allowed the use of "/" in user names, which
caused attempts to mount CIFS file systems to fail. With this package, "/"
characters are now allowed in user names if the "sec=krb5" or "sec=krb5i" mount
options are specified, thus CIFS file systems can now be mounted as expected.
(BZ#826825)

  • Previously, the cifs-utils packages were compiled without the RELRO (read-only

relocations) and PIE (Position Independent Executables) flags. Programs provided
by this package could be vulnerable to various attacks based on overwriting the
ELF section of a program. The "-pie" and "-fpie" options enable the building of
position-independent executables, and the "-Wl","-z","relro" turns on read-only
relocation support in gcc. These options are important for security purposes to
guard against possible buffer overflows that lead to exploits. The cifs-utils
binaries are now built with PIE and full RELRO support. The cifs-utils binary is
now more secured against "return-to-text" and memory corruption attacks and also
against attacks based on the program's ELF section overwriting. (BZ#838606)

In addition, this update adds the following enhancements:

  • With this update, the "strictcache", "actimeo", "cache=" and "rwpidforward"

mount options are now documented in the mount.cifs(8) manual page. (BZ#843596)

  • The "getcifsacl", "setcifsacl" and "cifs.idmap" programs have been added to

the package. These utilities allow users to manipulate ACLs on CIFS shares and
allow the mapping of Windows security IDs to POSIX user and group IDs.
(BZ#843612)

  • With this update, the cifs.idmap helper, which allows SID to UID and SID to

GID mapping, has been added to the package. Also, the manual page cifs.upcall(8)
has been updated and cifs.idmap(8) has been added. (BZ#843617)

Users of cifs-utils are advised to upgrade to these updated packages, which fix
these bugs and add these enhancements.

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 - 838606 - enable PIE and RELRO in cifs-utils binaries

CVEs

(none)

References

(none)

Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
x86_64
cifs-utils-4.8.1-18.el6.x86_64.rpm SHA-256: 0c341db41663d26bac604f21633fa0d34e6a2dd283b74a7e4d911a2ab646b34b
cifs-utils-debuginfo-4.8.1-18.el6.x86_64.rpm SHA-256: 118da4e7c6c97890aaba3e80289216ca76f4b0fb7ce9c3c11d6cf28c05b01cbd
i386
cifs-utils-4.8.1-18.el6.i686.rpm SHA-256: 28c5759f31be46281ba53be9d7c7786475dbd2224dfa0d5f7a73a904558d6081
cifs-utils-debuginfo-4.8.1-18.el6.i686.rpm SHA-256: c49c421214ec50a16c2edc01e78e9baf4eed39956134e9ce7be6955a0bae3fad

Red Hat Enterprise Linux Server - Extended Life Cycle Support 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
x86_64
cifs-utils-4.8.1-18.el6.x86_64.rpm SHA-256: 0c341db41663d26bac604f21633fa0d34e6a2dd283b74a7e4d911a2ab646b34b
cifs-utils-debuginfo-4.8.1-18.el6.x86_64.rpm SHA-256: 118da4e7c6c97890aaba3e80289216ca76f4b0fb7ce9c3c11d6cf28c05b01cbd
i386
cifs-utils-4.8.1-18.el6.i686.rpm SHA-256: 28c5759f31be46281ba53be9d7c7786475dbd2224dfa0d5f7a73a904558d6081
cifs-utils-debuginfo-4.8.1-18.el6.i686.rpm SHA-256: c49c421214ec50a16c2edc01e78e9baf4eed39956134e9ce7be6955a0bae3fad

Red Hat Enterprise Linux Workstation 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
x86_64
cifs-utils-4.8.1-18.el6.x86_64.rpm SHA-256: 0c341db41663d26bac604f21633fa0d34e6a2dd283b74a7e4d911a2ab646b34b
cifs-utils-debuginfo-4.8.1-18.el6.x86_64.rpm SHA-256: 118da4e7c6c97890aaba3e80289216ca76f4b0fb7ce9c3c11d6cf28c05b01cbd
i386
cifs-utils-4.8.1-18.el6.i686.rpm SHA-256: 28c5759f31be46281ba53be9d7c7786475dbd2224dfa0d5f7a73a904558d6081
cifs-utils-debuginfo-4.8.1-18.el6.i686.rpm SHA-256: c49c421214ec50a16c2edc01e78e9baf4eed39956134e9ce7be6955a0bae3fad

Red Hat Enterprise Linux Desktop 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
x86_64
cifs-utils-4.8.1-18.el6.x86_64.rpm SHA-256: 0c341db41663d26bac604f21633fa0d34e6a2dd283b74a7e4d911a2ab646b34b
cifs-utils-debuginfo-4.8.1-18.el6.x86_64.rpm SHA-256: 118da4e7c6c97890aaba3e80289216ca76f4b0fb7ce9c3c11d6cf28c05b01cbd
i386
cifs-utils-4.8.1-18.el6.i686.rpm SHA-256: 28c5759f31be46281ba53be9d7c7786475dbd2224dfa0d5f7a73a904558d6081
cifs-utils-debuginfo-4.8.1-18.el6.i686.rpm SHA-256: c49c421214ec50a16c2edc01e78e9baf4eed39956134e9ce7be6955a0bae3fad

Red Hat Enterprise Linux for IBM z Systems 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
s390x
cifs-utils-4.8.1-18.el6.s390x.rpm SHA-256: 8ba28152649fe9dfd9c8e0eef9022da56e44384d6b587db26e6381d12525b4d7
cifs-utils-debuginfo-4.8.1-18.el6.s390x.rpm SHA-256: 41560aae5e75f6ff5612f65c869fbbb72fb2cf5e806965aa1964b8390c1d6497

Red Hat Enterprise Linux for Power, big endian 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
ppc64
cifs-utils-4.8.1-18.el6.ppc64.rpm SHA-256: 2b4d1adff0a5f5603b96ce8df67f495c3785d7182e3274394fb07c9788ca5aa9
cifs-utils-debuginfo-4.8.1-18.el6.ppc64.rpm SHA-256: 9de7f00f922a846b9af1e7e6dd3f6389957fd03b0c46eb1995451c773d25d179

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
x86_64
cifs-utils-4.8.1-18.el6.x86_64.rpm SHA-256: 0c341db41663d26bac604f21633fa0d34e6a2dd283b74a7e4d911a2ab646b34b
cifs-utils-debuginfo-4.8.1-18.el6.x86_64.rpm SHA-256: 118da4e7c6c97890aaba3e80289216ca76f4b0fb7ce9c3c11d6cf28c05b01cbd

Red Hat Enterprise Linux Server from RHUI 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
x86_64
cifs-utils-4.8.1-18.el6.x86_64.rpm SHA-256: 0c341db41663d26bac604f21633fa0d34e6a2dd283b74a7e4d911a2ab646b34b
cifs-utils-debuginfo-4.8.1-18.el6.x86_64.rpm SHA-256: 118da4e7c6c97890aaba3e80289216ca76f4b0fb7ce9c3c11d6cf28c05b01cbd
i386
cifs-utils-4.8.1-18.el6.i686.rpm SHA-256: 28c5759f31be46281ba53be9d7c7786475dbd2224dfa0d5f7a73a904558d6081
cifs-utils-debuginfo-4.8.1-18.el6.i686.rpm SHA-256: c49c421214ec50a16c2edc01e78e9baf4eed39956134e9ce7be6955a0bae3fad

Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6

SRPM
cifs-utils-4.8.1-18.el6.src.rpm SHA-256: 6cf92c15e4e27c142006d673c2836d9a4f6ec40e719b5868f03451a7493b5001
s390x
cifs-utils-4.8.1-18.el6.s390x.rpm SHA-256: 8ba28152649fe9dfd9c8e0eef9022da56e44384d6b587db26e6381d12525b4d7
cifs-utils-debuginfo-4.8.1-18.el6.s390x.rpm SHA-256: 41560aae5e75f6ff5612f65c869fbbb72fb2cf5e806965aa1964b8390c1d6497

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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