ubuntu-cve-2018-10906
Vulnerability from osv_ubuntu
Published
2018-07-24 20:29
Modified
2026-04-22 07:38
Summary
Details

In fuse before versions 2.9.8 and 3.x before 3.2.5, fusermount is vulnerable to a restriction bypass when SELinux is active. This allows non-root users to mount a FUSE file system with the 'allow_other' mount option regardless of whether 'user_allow_other' is set in the fuse configuration. An attacker may use this flaw to mount a FUSE file system, accessible by other users, and trick them into accessing files on that file system, possibly causing Denial of Service or other unspecified effects.

Severity
5.3 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "fuse",
            "binary_version": "2.9.2-4ubuntu4.14.04.1"
          },
          {
            "binary_name": "libfuse2",
            "binary_version": "2.9.2-4ubuntu4.14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "fuse",
        "purl": "pkg:deb/ubuntu/fuse@2.9.2-4ubuntu4.14.04.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.2-4ubuntu3",
        "2.9.2-4ubuntu4",
        "2.9.2-4ubuntu4.14.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "fuse",
            "binary_version": "2.9.4-1ubuntu3.1+esm1"
          },
          {
            "binary_name": "libfuse2",
            "binary_version": "2.9.4-1ubuntu3.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "fuse",
        "purl": "pkg:deb/ubuntu/fuse@2.9.4-1ubuntu3.1+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.4-1ubuntu3.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.4-1ubuntu1",
        "2.9.4-1ubuntu2",
        "2.9.4-1ubuntu3",
        "2.9.4-1ubuntu3.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "fuse",
            "binary_version": "2.9.7-1ubuntu1"
          },
          {
            "binary_name": "libfuse2",
            "binary_version": "2.9.7-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "fuse",
        "purl": "pkg:deb/ubuntu/fuse@2.9.7-1ubuntu1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.7-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "In fuse before versions 2.9.8 and 3.x before 3.2.5, fusermount is vulnerable to a restriction bypass when SELinux is active. This allows non-root users to mount a FUSE file system with the \u0027allow_other\u0027 mount option regardless of whether \u0027user_allow_other\u0027 is set in the fuse configuration. An attacker may use this flaw to mount a FUSE file system, accessible by other users, and trick them into accessing files on that file system, possibly causing Denial of Service or other unspecified effects.",
  "id": "UBUNTU-CVE-2018-10906",
  "modified": "2026-04-22T07:38:37Z",
  "published": "2018-07-24T20:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-10906"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libfuse/libfuse/pull/268"
    },
    {
      "type": "REPORT",
      "url": "https://sourceforge.net/p/fuse/mailman/message/36374753/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5326-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-10906"
    }
  ],
  "related": [
    "USN-5326-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-10906"
  ]
}



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