GSD-2020-27348

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar. This issue affects snapcraft versions prior to 4.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1.
Aliases
Aliases
CVE-2020-27348
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{
  "GSD": {
    "alias": "CVE-2020-27348",
    "description": "In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar. This issue affects snapcraft versions prior to 4.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1.",
    "id": "GSD-2020-27348",
    "references": [
      "https://ubuntu.com/security/CVE-2020-27348"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-27348"
      ],
      "details": "In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar. This issue affects snapcraft versions prior to 4.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1.",
      "id": "GSD-2020-27348",
      "modified": "2023-12-13T01:22:11.359317Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@ubuntu.com",
        "DATE_PUBLIC": "2020-12-03T18:16:00.000Z",
        "ID": "CVE-2020-27348",
        "STATE": "PUBLIC",
        "TITLE": "snapcraft may build snaps with incorrect LD_LIBRARY_PATH"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "snapcraft",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "4.4",
                          "version_value": "4.4.4"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "2.43.1",
                          "version_value": "2.43.1+16.04.1"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "2.43.1",
                          "version_value": "2.43.1+18.04.1"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Canonical"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "itszn"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar. This issue affects snapcraft versions prior to 4.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-427 Uncontrolled Search Path Element"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/snapcore/snapcraft/pull/3345",
            "refsource": "MISC",
            "url": "https://github.com/snapcore/snapcraft/pull/3345"
          },
          {
            "name": "https://usn.ubuntu.com/usn/usn-4661-1",
            "refsource": "MISC",
            "url": "https://usn.ubuntu.com/usn/usn-4661-1"
          },
          {
            "name": "https://bugs.launchpad.net/bugs/1901572",
            "refsource": "MISC",
            "url": "https://bugs.launchpad.net/bugs/1901572"
          }
        ]
      },
      "source": {
        "advisory": "https://usn.ubuntu.com/usn/usn-4661-1",
        "defect": [
          "https://bugs.launchpad.net/bugs/1901572"
        ],
        "discovery": "EXTERNAL"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c4.4.4",
          "affected_versions": "All versions before 4.4.4",
          "cvss_v2": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
          "cwe_ids": [
            "CWE-1035",
            "CWE-427",
            "CWE-937"
          ],
          "date": "2020-12-14",
          "description": "In some conditions, a snap package built by snapcraft includes the current directory in `LD_LIBRARY_PATH`, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar.",
          "fixed_versions": [
            "4.4.4"
          ],
          "identifier": "CVE-2020-27348",
          "identifiers": [
            "CVE-2020-27348"
          ],
          "not_impacted": "All versions starting from 4.4.4",
          "package_slug": "pypi/snapcraft",
          "pubdate": "2020-12-04",
          "solution": "Upgrade to version 4.4.4 or above.",
          "title": "Uncontrolled Search Path Element",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-27348",
            "https://bugs.launchpad.net/bugs/1901572"
          ],
          "uuid": "4527e616-b16d-4a99-b49f-87f46e41fb87"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:canonical:snapcraft:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "4.4.4",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@ubuntu.com",
          "ID": "CVE-2020-27348"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar. This issue affects snapcraft versions prior to 4.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-427"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://usn.ubuntu.com/usn/usn-4661-1",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://usn.ubuntu.com/usn/usn-4661-1"
            },
            {
              "name": "https://github.com/snapcore/snapcraft/pull/3345",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/snapcore/snapcraft/pull/3345"
            },
            {
              "name": "https://bugs.launchpad.net/bugs/1901572",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Issue Tracking",
                "Third Party Advisory"
              ],
              "url": "https://bugs.launchpad.net/bugs/1901572"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.4,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
          "exploitabilityScore": 1.3,
          "impactScore": 5.5
        }
      },
      "lastModifiedDate": "2020-12-14T20:36Z",
      "publishedDate": "2020-12-04T03:15Z"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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