Issued:
2011-12-06
Updated:
2011-12-06

RHBA-2011:1689 - libsepol enhancement update

Synopsis

libsepol enhancement update

Type/Severity

Bug Fix Advisory (none)

Topic

Enhanced libsepol packages are now available for Red Hat Enterprise Linux 6.

Description

The libsepol library provides an API for the manipulation of SELinux binary policies. It is used by checkpolicy (the policy compiler) and similar tools, as well as by programs like load_policy that need to perform specific transformations on binary policies (for example, customizing policy boolean settings).

This update adds the following enhancement:

  • Previously, the libsepol packages were compiled without the RELRO (read-only relocations) flag. As a consequence, programs provided by this package and also programs built against the libsepol libraries were vulnerable to various attacks based on overwriting the ELF section of a program. To increase the security of libsepol programs and libraries, the libsepol spec file has been modified to use the "-Wl,-z,relro" flags when compiling the packages. As a result, the libsepol packages are now provided with partial RELRO protection. (BZ#727285)

Users of libsepol are advised to upgrade to these updated packages, which add this enhancement.

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.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • libsepol-devel-2.0.41-4.el6.i686.rpm
  • libsepol-debuginfo-2.0.41-4.el6.x86_64.rpm
  • libsepol-2.0.41-4.el6.x86_64.rpm
  • libsepol-debuginfo-2.0.41-4.el6.ppc64.rpm
  • libsepol-static-2.0.41-4.el6.ppc64.rpm
  • libsepol-2.0.41-4.el6.ppc64.rpm
  • libsepol-static-2.0.41-4.el6.i686.rpm
  • libsepol-debuginfo-2.0.41-4.el6.s390.rpm
  • libsepol-debuginfo-2.0.41-4.el6.s390x.rpm
  • libsepol-static-2.0.41-4.el6.x86_64.rpm
  • libsepol-devel-2.0.41-4.el6.x86_64.rpm
  • libsepol-debuginfo-2.0.41-4.el6.i686.rpm
  • libsepol-2.0.41-4.el6.i686.rpm
  • libsepol-2.0.41-4.el6.ppc.rpm
  • libsepol-2.0.41-4.el6.src.rpm
  • libsepol-static-2.0.41-4.el6.s390x.rpm
  • libsepol-debuginfo-2.0.41-4.el6.ppc.rpm
  • libsepol-devel-2.0.41-4.el6.s390.rpm
  • libsepol-devel-2.0.41-4.el6.s390x.rpm
  • libsepol-devel-2.0.41-4.el6.ppc.rpm
  • libsepol-2.0.41-4.el6.s390.rpm
  • libsepol-devel-2.0.41-4.el6.ppc64.rpm
  • libsepol-2.0.41-4.el6.s390x.rpm

Fixes

CVEs

(none)

References

(none)

Additional information