ubuntu-cve-2020-36657
Vulnerability from osv_ubuntu
Published
2023-01-26 21:15
Modified
2026-05-20 14:52
Summary
Details

uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libuptimed0",
            "binary_version": "1:0.3.17-4"
          },
          {
            "binary_name": "uprecords-cgi",
            "binary_version": "1:0.3.17-4"
          },
          {
            "binary_name": "uptimed",
            "binary_version": "1:0.3.17-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "uptimed",
        "purl": "pkg:deb/ubuntu/uptimed@1:0.3.17-4?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.3.17-4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "uptimed",
            "binary_version": "1:0.4.0+git20150923.6b22106-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "uptimed",
        "purl": "pkg:deb/ubuntu/uptimed@1:0.4.0+git20150923.6b22106-2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.4.0+git20150923.6b22106-1.1",
        "1:0.4.0+git20150923.6b22106-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "uptimed",
            "binary_version": "1:0.4.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "uptimed",
        "purl": "pkg:deb/ubuntu/uptimed@1:0.4.2-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.4.1-1",
        "1:0.4.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "uptimed",
            "binary_version": "1:0.4.6-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "uptimed",
        "purl": "pkg:deb/ubuntu/uptimed@1:0.4.6-3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.4.3-1",
        "1:0.4.5-1",
        "1:0.4.6-1",
        "1:0.4.6-2",
        "1:0.4.6-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "uptimed",
            "binary_version": "1:0.4.6-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "uptimed",
        "purl": "pkg:deb/ubuntu/uptimed@1:0.4.6-3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.4.6-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "uptimed",
            "binary_version": "1:0.4.6-3.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "uptimed",
        "purl": "pkg:deb/ubuntu/uptimed@1:0.4.6-3.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.4.6-3.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "uptimed",
            "binary_version": "1:0.4.6-3.1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "uptimed",
        "purl": "pkg:deb/ubuntu/uptimed@1:0.4.6-3.1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.4.6-3.1",
        "1:0.4.6-3.1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.",
  "id": "UBUNTU-CVE-2020-36657",
  "modified": "2026-05-20T14:52:41Z",
  "published": "2023-01-26T21:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36657"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.gentoo.org/630810"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-36657"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-36657"
  ]
}



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