GSD-2020-16126

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, improperly dropped the ruid, allowing untrusted users to send signals to AccountService, thus stopping it from handling D-Bus messages in a timely fashion.
Aliases
Aliases
CVE-2020-16126
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{
  "GSD": {
    "alias": "CVE-2020-16126",
    "description": "An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, improperly dropped the ruid, allowing untrusted users to send signals to AccountService, thus stopping it from handling D-Bus messages in a timely fashion.",
    "id": "GSD-2020-16126",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-16126.html",
      "https://ubuntu.com/security/CVE-2020-16126"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-16126"
      ],
      "details": "An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, improperly dropped the ruid, allowing untrusted users to send signals to AccountService, thus stopping it from handling D-Bus messages in a timely fashion.",
      "id": "GSD-2020-16126",
      "modified": "2023-12-13T01:21:46.465665Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security@ubuntu.com",
        "DATE_PUBLIC": "2020-11-03T00:00:00.000Z",
        "ID": "CVE-2020-16126",
        "STATE": "PUBLIC",
        "TITLE": "accountsservice drops ruid, allows unprivileged users to send it signals"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "accountsservice",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "0.6.35-0ubuntu7.3",
                          "version_value": "0.6.35-0ubuntu7.3+esm2"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "0.6.40-2ubuntu11",
                          "version_value": "0.6.40-2ubuntu11.6"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "0.6.45-1ubuntu1",
                          "version_value": "0.6.45-1ubuntu1.3"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "0.6.55-0ubuntu",
                          "version_value": "0.6.55-0ubuntu12~20.04.4"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "0.6.55-0ubuntu13",
                          "version_value": "0.6.55-0ubuntu13.2"
                        }
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                    }
                  }
                ]
              },
              "vendor_name": "Freedesktop"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "Kevin Backhouse"
        }
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      "data_version": "4.0",
      "description": {
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            "lang": "eng",
            "value": "An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, improperly dropped the ruid, allowing untrusted users to send signals to AccountService, thus stopping it from handling D-Bus messages in a timely fashion."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-269 Improper Privilege Management"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS",
            "refsource": "MISC",
            "url": "https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS"
          }
        ]
      },
      "source": {
        "advisory": "https://usn.ubuntu.com/usn/usn-4616-1",
        "defect": [
          "https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1900255"
        ],
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
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        "nodes": [
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            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:freedesktop:accountsservice:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.6.55",
                "vulnerable": true
              }
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            "operator": "OR"
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      "cve": {
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          "ASSIGNER": "security@ubuntu.com",
          "ID": "CVE-2020-16126"
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        "description": {
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              "value": "An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, improperly dropped the ruid, allowing untrusted users to send signals to AccountService, thus stopping it from handling D-Bus messages in a timely fashion."
            }
          ]
        },
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            {
              "description": [
                {
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        },
        "references": {
          "reference_data": [
            {
              "name": "N/A",
              "refsource": "CONFIRM",
              "tags": [
                "Exploit",
                "Third Party Advisory"
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              "url": "https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 2.1,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2020-11-24T19:17Z",
      "publishedDate": "2020-11-11T04:15Z"
    }
  }
}


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