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Red Hat: RHSA-2011:1083-01 Moderate: Fuse Symlink Attack Advisory

Updated fuse packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate [More...]. ==================================================================== Red Hat Security Advisory Synopsis: Moderate: fuse security update Advisory ID: RHSA-2011:1083-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2011:1083.html Issue date: 2011-07-20 CVE Names: CVE-2010-3879 CVE-2011-0541 CVE-2011-0542 CVE-2011-0543 ==================================================================== 1. Summary: Updated fuse packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: FUSE (Filesystem in Userspace) can implement a fully functional file system in a user-space program. These packages provide the mount utility, fusermount, the tool used to mount FUSE file systems. Multiple flaws were found in the way fusermount handled the mounting and unmounting of directories when symbolic links were present. A local user in the fuse group could use these flaws to unmount file systems, which they would otherwise not be able to unmount and that were not mounted using FUSE, via a symbolic link attack.(CVE-2010-3879, CVE-2011-0541, CVE-2011-0542, CVE-2011-0543) Note: The util-linux-ng RHBA-2011:0699 update must also be installed to fully correct the above flaws. All users should upgrade to these updated packages, which contain backported patches to correct these issues. 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/): 651183 - CVE-2010-3879 CVE-2011-0541 CVE-2011-0542 CVE-2011-0543 fuse: unprivileged user can unmount arbitrary locations via symlink attack 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: i386: fuse-2.8.3-3.el6_1.i686.rpm fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-libs-2.8.3-3.el6_1.i686.rpm x86_64: fuse-2.8.3-3.el6_1.x86_64.rpm fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-debuginfo-2.8.3-3.el6_1.x86_64.rpm fuse-libs-2.8.3-3.el6_1.i686.rpm fuse-libs-2.8.3-3.el6_1.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): Source: i386: fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-devel-2.8.3-3.el6_1.i686.rpm x86_64: fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-debuginfo-2.8.3-3.el6_1.x86_64.rpm fuse-devel-2.8.3-3.el6_1.i686.rpm fuse-devel-2.8.3-3.el6_1.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: x86_64: fuse-debuginfo-2.8.3-3.el6_1.x86_64.rpm fuse-libs-2.8.3-3.el6_1.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): Source: x86_64: fuse-2.8.3-3.el6_1.x86_64.rpm fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-debuginfo-2.8.3-3.el6_1.x86_64.rpm fuse-devel-2.8.3-3.el6_1.i686.rpm fuse-devel-2.8.3-3.el6_1.x86_64.rpm fuse-libs-2.8.3-3.el6_1.i686.rpm Red Hat Enterprise Linux Server (v.6): Source: i386: fuse-2.8.3-3.el6_1.i686.rpm fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-devel-2.8.3-3.el6_1.i686.rpm fuse-libs-2.8.3-3.el6_1.i686.rpm ppc64: fuse-2.8.3-3.el6_1.ppc64.rpm fuse-debuginfo-2.8.3-3.el6_1.ppc.rpm fuse-debuginfo-2.8.3-3.el6_1.ppc64.rpm fuse-devel-2.8.3-3.el6_1.ppc.rpm fuse-devel-2.8.3-3.el6_1.ppc64.rpm fuse-libs-2.8.3-3.el6_1.ppc.rpm fuse-libs-2.8.3-3.el6_1.ppc64.rpm s390x: fuse-2.8.3-3.el6_1.s390x.rpm fuse-debuginfo-2.8.3-3.el6_1.s390.rpm fuse-debuginfo-2.8.3-3.el6_1.s390x.rpm fuse-devel-2.8.3-3.el6_1.s390.rpm fuse-devel-2.8.3-3.el6_1.s390x.rpm fuse-libs-2.8.3-3.el6_1.s390.rpm fuse-libs-2.8.3-3.el6_1.s390x.rpm x86_64: fuse-2.8.3-3.el6_1.x86_64.rpm fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-debuginfo-2.8.3-3.el6_1.x86_64.rpm fuse-devel-2.8.3-3.el6_1.i686.rpm fuse-devel-2.8.3-3.el6_1.x86_64.rpm fuse-libs-2.8.3-3.el6_1.i686.rpm fuse-libs-2.8.3-3.el6_1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: i386: fuse-2.8.3-3.el6_1.i686.rpm fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-devel-2.8.3-3.el6_1.i686.rpm fuse-libs-2.8.3-3.el6_1.i686.rpm x86_64: fuse-2.8.3-3.el6_1.x86_64.rpm fuse-debuginfo-2.8.3-3.el6_1.i686.rpm fuse-debuginfo-2.8.3-3.el6_1.x86_64.rpm fuse-devel-2.8.3-3.el6_1.i686.rpm fuse-devel-2.8.3-3.el6_1.x86_64.rpm fuse-libs-2.8.3-3.el6_1.i686.rpm fuse-libs-2.8.3-3.el6_1.x86_64.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-2010-3879 https://access.redhat.com/security/cve/CVE-2011-0541 https://access.redhat.com/security/cve/CVE-2011-0542 https://access.redhat.com/security/cve/CVE-2011-0543 https://access.redhat.com/security/updates/classification#moderate https://access.redhat.com/errata/RHBA-2011:0699.html 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact Copyright 2011 Red Hat, Inc. . Newlyrevised fuse packages for Red Hat Enterprise Linux 6 have been released, rectifying several security vulnerabilities classified as moderate.. fuse Package Updates, Red Hat Security, Linux Symlink Attack Fix, Moderate Security Advisories, Linux Package Management. . LinuxSecurity.com Team

Jul 20, 2011 Red Hat