rhsa-2011_1083
Vulnerability from csaf_redhat
Published
2011-07-20 18:16
Modified
2024-11-22 04:16
Summary
Red Hat Security Advisory: fuse security update

Notes

Topic
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.
Details
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.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "text": "FUSE (Filesystem in Userspace) can implement a fully functional file system\nin a user-space program. These packages provide the mount utility,\nfusermount, the tool used to mount FUSE file systems.\n\nMultiple flaws were found in the way fusermount handled the mounting and\nunmounting of directories when symbolic links were present. A local user in\nthe fuse group could use these flaws to unmount file systems, which they\nwould otherwise not be able to unmount and that were not mounted using\nFUSE, via a symbolic link attack. (CVE-2010-3879, CVE-2011-0541,\nCVE-2011-0542, CVE-2011-0543)\n\nNote: The util-linux-ng RHBA-2011:0699 update must also be installed to\nfully correct the above flaws.\n\nAll users should upgrade to these updated packages, which contain\nbackported patches to correct these issues.",
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          "url": "https://access.redhat.com/errata/RHSA-2011:1083"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "HIGH",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 2.6,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:H/Au:N/C:N/I:P/A:P",
            "version": "2.0"
          },
          "products": [
            "6Server-6.1.z:fuse-0:2.8.3-3.el6_1.i686",
            "6Server-6.1.z:fuse-0:2.8.3-3.el6_1.ppc64",
            "6Server-6.1.z:fuse-0:2.8.3-3.el6_1.s390x",
            "6Server-6.1.z:fuse-0:2.8.3-3.el6_1.src",
            "6Server-6.1.z:fuse-0:2.8.3-3.el6_1.x86_64",
            "6Server-6.1.z:fuse-debuginfo-0:2.8.3-3.el6_1.i686",
            "6Server-6.1.z:fuse-debuginfo-0:2.8.3-3.el6_1.ppc",
            "6Server-6.1.z:fuse-debuginfo-0:2.8.3-3.el6_1.ppc64",
            "6Server-6.1.z:fuse-debuginfo-0:2.8.3-3.el6_1.s390",
            "6Server-6.1.z:fuse-debuginfo-0:2.8.3-3.el6_1.s390x",
            "6Server-6.1.z:fuse-debuginfo-0:2.8.3-3.el6_1.x86_64",
            "6Server-6.1.z:fuse-devel-0:2.8.3-3.el6_1.i686",
            "6Server-6.1.z:fuse-devel-0:2.8.3-3.el6_1.ppc",
            "6Server-6.1.z:fuse-devel-0:2.8.3-3.el6_1.ppc64",
            "6Server-6.1.z:fuse-devel-0:2.8.3-3.el6_1.s390",
            "6Server-6.1.z:fuse-devel-0:2.8.3-3.el6_1.s390x",
            "6Server-6.1.z:fuse-devel-0:2.8.3-3.el6_1.x86_64",
            "6Server-6.1.z:fuse-libs-0:2.8.3-3.el6_1.i686",
            "6Server-6.1.z:fuse-libs-0:2.8.3-3.el6_1.ppc",
            "6Server-6.1.z:fuse-libs-0:2.8.3-3.el6_1.ppc64",
            "6Server-6.1.z:fuse-libs-0:2.8.3-3.el6_1.s390",
            "6Server-6.1.z:fuse-libs-0:2.8.3-3.el6_1.s390x",
            "6Server-6.1.z:fuse-libs-0:2.8.3-3.el6_1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "fuse: unprivileged user can unmount arbitrary locations via symlink attack"
    }
  ]
}


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