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USN-4661-1 (UBUNTU-CVE-2020-27348)

Vulnerability from osv_ubuntu – Published: 2020-12-03 18:35 – Updated: 2026-02-10 04:42 – Source website
VLAI
Summary
snapcraft vulnerability
Details

It was discovered that Snapcraft includes the current directory when configuring LD_LIBRARY_PATH for application commands. If a user were tricked into installing a malicious snap or downloading a malicious library, under certain circumstances an attacker could exploit this to affect strict mode snaps that have access to the library and when launched from the directory containing the library.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-27348",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "snapcraft",
            "binary_version": "2.43.1+16.04.1"
          },
          {
            "binary_name": "snapcraft-examples",
            "binary_version": "2.43.1+16.04.1"
          },
          {
            "binary_name": "snapcraft-parser",
            "binary_version": "2.43.1+16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "snapcraft",
        "purl": "pkg:deb/ubuntu/snapcraft@2.43.1+16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.43.1+16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.3",
        "0.4",
        "0.5",
        "0.6",
        "1.0",
        "2.0",
        "2.0.1",
        "2.1",
        "2.1.1",
        "2.2",
        "2.2.1",
        "2.2.2",
        "2.3.1",
        "2.3.2",
        "2.4",
        "2.5",
        "2.6",
        "2.6.1",
        "2.7",
        "2.8",
        "2.8.1",
        "2.8.2",
        "2.8.3",
        "2.8.4",
        "2.8.8b",
        "2.9",
        "2.10.1",
        "2.11",
        "2.12",
        "2.12.1",
        "2.13.1",
        "2.14",
        "2.15.1",
        "2.16",
        "2.17",
        "2.18.1",
        "2.19",
        "2.20",
        "2.21",
        "2.22.1",
        "2.23",
        "2.24",
        "2.25",
        "2.26",
        "2.27",
        "2.27.1",
        "2.28",
        "2.29",
        "2.31",
        "2.33",
        "2.34",
        "2.35",
        "2.39.2",
        "2.39.3",
        "2.39.3+really2.35",
        "2.40",
        "2.41",
        "2.42",
        "2.42.1",
        "2.43",
        "2.43.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-27348",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "snapcraft",
            "binary_version": "2.43.1+18.04.1"
          },
          {
            "binary_name": "snapcraft-examples",
            "binary_version": "2.43.1+18.04.1"
          },
          {
            "binary_name": "snapcraft-parser",
            "binary_version": "2.43.1+18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "snapcraft",
        "purl": "pkg:deb/ubuntu/snapcraft@2.43.1+18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.43.1+18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.34+17.10",
        "2.39.2+18.04.2",
        "2.40+18.04.1",
        "2.40+18.04.3",
        "2.41+18.04.1",
        "2.41+18.04.2",
        "2.42+18.04.2",
        "2.42.1+18.04",
        "2.43+18.04",
        "2.43.1+18.04"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Snapcraft includes the current directory when\nconfiguring LD_LIBRARY_PATH for application commands. If a user were\ntricked into installing a malicious snap or downloading a malicious\nlibrary, under certain circumstances an attacker could exploit this to\naffect strict mode snaps that have access to the library and when\nlaunched from the directory containing the library.\n",
  "id": "USN-4661-1",
  "modified": "2026-02-10T04:42:00Z",
  "published": "2020-12-03T18:35:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4661-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27348"
    },
    {
      "type": "REPORT",
      "url": "https://launchpad.net/bugs/1901572"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "snapcraft vulnerability",
  "upstream": [
    "UBUNTU-CVE-2020-27348"
  ]
}



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