Red Hat: 2011:0414-01: policycoreutils: Important Advisory
Summary
The policycoreutils packages contain the core utilities that are
required for the basic operation of a Security-Enhanced Linux (SELinux)
system and its policies.
It was discovered that the seunshare utility did not enforce proper file
permissions on the directory used as an alternate temporary directory
mounted as /tmp/. A local user could use this flaw to overwrite files or,
possibly, execute arbitrary code with the privileges of a setuid or
setgid application that relies on proper /tmp/ permissions, by running that
application via seunshare. (CVE-2011-1011)
Red Hat would like to thank Tavis Ormandy for reporting this issue.
This update also introduces the following changes:
* The seunshare utility was moved from the main policycoreutils subpackage
to the policycoreutils-sandbox subpackage. This utility is only required
by the sandbox feature and does not need to be installed by default.
* Updated selinux-policy packages that add the SELinux policy changes
required by the seunshare fixes.
All policycoreutils users should upgrade to these updated packages, which
correct this issue.
Summary
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/kb/docs/DOC-11259
References
https://www.redhat.com/security/data/cve/CVE-2011-1011.html https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386:
policycoreutils-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-python-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.i686.rpm
noarch:
selinux-policy-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-minimum-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-mls-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-targeted-3.7.19-54.el6_0.5.noarch.rpm
x86_64:
policycoreutils-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-python-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
noarch:
selinux-policy-doc-3.7.19-54.el6_0.5.noarch.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
noarch:
selinux-policy-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-minimum-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-mls-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-targeted-3.7.19-54.el6_0.5.noarch.rpm
x86_64:
policycoreutils-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-python-2.0.83-19.8.el6_0.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
noarch:
selinux-policy-doc-3.7.19-54.el6_0.5.noarch.rpm
x86_64:
policycoreutils-debuginfo-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386:
policycoreutils-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-python-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.i686.rpm
noarch:
selinux-policy-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-minimum-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-mls-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-targeted-3.7.19-54.el6_0.5.noarch.rpm
ppc64:
policycoreutils-2.0.83-19.8.el6_0.ppc64.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.ppc64.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.ppc64.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.ppc64.rpm
policycoreutils-python-2.0.83-19.8.el6_0.ppc64.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.ppc64.rpm
s390x:
policycoreutils-2.0.83-19.8.el6_0.s390x.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.s390x.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.s390x.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.s390x.rpm
policycoreutils-python-2.0.83-19.8.el6_0.s390x.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.s390x.rpm
x86_64:
policycoreutils-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-python-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
noarch:
selinux-policy-doc-3.7.19-54.el6_0.5.noarch.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386:
policycoreutils-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-python-2.0.83-19.8.el6_0.i686.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.i686.rpm
noarch:
selinux-policy-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-minimum-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-mls-3.7.19-54.el6_0.5.noarch.rpm
selinux-policy-targeted-3.7.19-54.el6_0.5.noarch.rpm
x86_64:
policycoreutils-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-debuginfo-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-gui-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-newrole-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-python-2.0.83-19.8.el6_0.x86_64.rpm
policycoreutils-sandbox-2.0.83-19.8.el6_0.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
noarch:
selinux-policy-doc-3.7.19-54.el6_0.5.noarch.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
Topic
Updated policycoreutils packages that fix one security issue are nowavailable for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - noarch
Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - noarch
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - noarch
Bugs Fixed
633544 - CVE-2011-1011 policycoreutils: insecure temporary directory handling in seunshare