gsd-2020-16125
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can't contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.
Aliases
Aliases
CVE-2020-16125


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-16125",
    "description": "gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can\u0027t contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.",
    "id": "GSD-2020-16125",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-16125.html",
      "https://access.redhat.com/errata/RHSA-2021:1586",
      "https://ubuntu.com/security/CVE-2020-16125",
      "https://advisories.mageia.org/CVE-2020-16125.html",
      "https://security.archlinux.org/CVE-2020-16125"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-16125"
      ],
      "details": "gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can\u0027t contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.",
      "id": "GSD-2020-16125",
      "modified": "2023-12-13T01:21:46.353410Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@ubuntu.com",
        "DATE_PUBLIC": "2020-11-06T00:00:00.000Z",
        "ID": "CVE-2020-16125",
        "STATE": "PUBLIC",
        "TITLE": "gdm3 would start gnome-initial-setup if it cannot contact accountservice"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "GDM3",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "3.36",
                          "version_value": "3.36.4"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "3.38",
                          "version_value": "3.38.2"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Gnome"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "Kevin Backhouse"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can\u0027t contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-754 Improper Check for Unusual or Exceptional Conditions"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://gitlab.gnome.org/GNOME/gdm/-/issues/642",
            "refsource": "MISC",
            "url": "https://gitlab.gnome.org/GNOME/gdm/-/issues/642"
          },
          {
            "name": "https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314",
            "refsource": "MISC",
            "url": "https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314"
          },
          {
            "name": "https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon",
            "refsource": "MISC",
            "url": "https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon"
          }
        ]
      },
      "source": {
        "advisory": "https://ubuntu.com/security/notices/USN-4614-1",
        "defect": [
          "https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314"
        ],
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:gnome:gnome_display_manager:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.36.2",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:gnome:gnome_display_manager:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.38.2",
                "versionStartIncluding": "3.38.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@ubuntu.com",
          "ID": "CVE-2020-16125"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can\u0027t contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-754"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314"
            },
            {
              "name": "https://gitlab.gnome.org/GNOME/gdm/-/issues/642",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Vendor Advisory"
              ],
              "url": "https://gitlab.gnome.org/GNOME/gdm/-/issues/642"
            },
            {
              "name": "https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.6,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 0.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2020-11-24T18:12Z",
      "publishedDate": "2020-11-10T05:15Z"
    }
  }
}


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