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Red Hat Enterprise Linux 6: RHSA-2011-0414-01 Important: seunshare Threat

Updated policycoreutils packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS). -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ==================================================================== Red Hat Security Advisory Synopsis: Important: policycoreutils security update Advisory ID: RHSA-2011:0414-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2011:0414.html Issue date: 2011-04-04 CVE Names: CVE-2011-1011 ==================================================================== 1. Summary: Updated policycoreutils packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. 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 3. Description: 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 usethis 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. 4. 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 5. Bugs fixed (http://bugzilla.redhat.com/): 633544 - CVE-2011-1011 policycoreutils: insecure temporary directory handling in seunshare 6. 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 7. References: https://access.redhat.com/security/cve/CVE-2011-1011 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFNmjSHXlSAg2UNWIIRAv8GAJ9iOQYE92AU2vd59t4TdkMShty/AQCgiVOY gH3tfL7t+jyY+ANVBjrfoMM=1M/q -----END PGP SIGNATURE----- -- Enterprise-watch-list mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . A significant security patch for policycoreutils has been released to fix a severe vulnerability affecting Red Hat Enterprise Linux 6 environments.. Red Hat Enterprise Linux, Policycoreutils Update, SELinux Security Fix. . Severity: Important. LinuxSecurity.com Team

Apr 04, 2011 •Important Red Hat