ubuntu-cve-2016-2781
Vulnerability from osv_ubuntu
Published
2017-02-07 15:59
Modified
2026-03-18 04:48
Summary
Details

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Severity
6.5 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
4.6 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "coreutils",
            "binary_version": "8.21-1ubuntu5.4"
          },
          {
            "binary_name": "mktemp",
            "binary_version": "8.21-1ubuntu5.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "coreutils",
        "purl": "pkg:deb/ubuntu/coreutils@8.21-1ubuntu5.4?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.20-3ubuntu5",
        "8.21-1ubuntu3",
        "8.21-1ubuntu4",
        "8.21-1ubuntu5",
        "8.21-1ubuntu5.1",
        "8.21-1ubuntu5.3",
        "8.21-1ubuntu5.4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "coreutils",
            "binary_version": "8.25-2ubuntu3~16.04"
          },
          {
            "binary_name": "mktemp",
            "binary_version": "8.25-2ubuntu3~16.04"
          },
          {
            "binary_name": "realpath",
            "binary_version": "8.25-2ubuntu3~16.04"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "coreutils",
        "purl": "pkg:deb/ubuntu/coreutils@8.25-2ubuntu3~16.04?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.23-4ubuntu2",
        "8.25-2ubuntu2",
        "8.25-2ubuntu3~16.04"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "coreutils",
            "binary_version": "8.28-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "coreutils",
        "purl": "pkg:deb/ubuntu/coreutils@8.28-1ubuntu1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.26-3ubuntu4",
        "8.28-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "coreutils",
            "binary_version": "8.30-3ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "coreutils",
        "purl": "pkg:deb/ubuntu/coreutils@8.30-3ubuntu2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.30-3ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "coreutils",
            "binary_version": "8.32-4.1ubuntu1.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "coreutils",
        "purl": "pkg:deb/ubuntu/coreutils@8.32-4.1ubuntu1.3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.32-4ubuntu2",
        "8.32-4ubuntu3",
        "8.32-4.1ubuntu1",
        "8.32-4.1ubuntu1.1",
        "8.32-4.1ubuntu1.2",
        "8.32-4.1ubuntu1.3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "coreutils",
            "binary_version": "9.4-3ubuntu6.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "coreutils",
        "purl": "pkg:deb/ubuntu/coreutils@9.4-3ubuntu6.2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.1-1ubuntu2",
        "9.4-2ubuntu1",
        "9.4-2ubuntu2",
        "9.4-2ubuntu3",
        "9.4-2ubuntu4",
        "9.4-3ubuntu3",
        "9.4-3ubuntu5",
        "9.4-3ubuntu6",
        "9.4-3ubuntu6.1",
        "9.4-3ubuntu6.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gnu-coreutils",
            "binary_version": "9.5-1ubuntu4.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "coreutils",
        "purl": "pkg:deb/ubuntu/coreutils@9.5-1ubuntu4.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.5-1ubuntu1",
        "9.5-1ubuntu1.25.10.1",
        "9.5-1ubuntu2",
        "9.5-1ubuntu3",
        "9.5-1ubuntu4",
        "9.5-1ubuntu4.1"
      ]
    }
  ],
  "aliases": [],
  "details": "chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal\u0027s input buffer.",
  "id": "UBUNTU-CVE-2016-2781",
  "modified": "2026-03-18T04:48:55Z",
  "published": "2017-02-07T15:59:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-2781"
    },
    {
      "type": "REPORT",
      "url": "http://seclists.org/oss-sec/2016/q1/452"
    },
    {
      "type": "REPORT",
      "url": "https://lore.kernel.org/patchwork/patch/793178/"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-2781"
    },
    {
      "type": "REPORT",
      "url": "https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.28/v2.28-ReleaseNotes"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-2781"
  ]
}



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