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GSD-2021-44730

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2021-44730",
    "description": "snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1",
    "id": "GSD-2021-44730",
    "references": [
      "https://www.debian.org/security/2022/dsa-5080",
      "https://ubuntu.com/security/CVE-2021-44730"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-44730"
      ],
      "details": "snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1",
      "id": "GSD-2021-44730",
      "modified": "2023-12-13T01:23:20.671926Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2021-44730",
        "STATE": "PUBLIC",
        "TITLE": "snapd could be made to escalate privileges and run programs as administrator"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "snapd",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c=",
                          "version_value": "2.54.2"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Canonical Ltd."
            }
          ]
        }
      },
      "credit": [
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          "value": "Qualys Research Team"
        }
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            "value": "snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1"
          }
        ]
      },
      "generator": {
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      },
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          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
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                "value": "CWE-59 Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
              }
            ]
          }
        ]
      },
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          {
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          },
          {
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          },
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          },
          {
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          }
        ]
      },
      "source": {
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
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        "description": {
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              "lang": "en",
              "value": "snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1"
            }
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                }
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          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 6.9,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
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          },
          "exploitabilityScore": 2.0,
          "impactScore": 6.0
        }
      },
      "lastModifiedDate": "2022-02-28T17:00Z",
      "publishedDate": "2022-02-17T23:15Z"
    }
  }
}



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