CVE-2020-16125

{"containers": {"cna": {"affected": [{"product": "GDM3", "vendor": "Gnome", "versions": [{"lessThan": "3.36.4", "status": "affected", "version": "3.36", "versionType": "custom"}, {"lessThan": "3.38.2", "status": "affected", "version": "3.38", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Kevin Backhouse"}], "datePublic": "2020-11-06T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "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."}], "metrics": [{"cvssV3_1": {"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"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-754", "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-11-10T04:20:13.000Z", "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://gitlab.gnome.org/GNOME/gdm/-/issues/642"}, {"tags": ["x_refsource_MISC"], "url": "https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314"}, {"tags": ["x_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"}, "title": "gdm3 would start gnome-initial-setup if it cannot contact accountservice", "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"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": "<", "version_name": "3.36", "version_value": "3.36.4"}, {"version_affected": "<", "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't contact the accountservice service via dbus in a timely manner; 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{"affected": [{"affectedData": [{"product": "GDM3", "vendor": "Gnome", "versions": [{"lessThan": "3.36.4", "status": "affected", "version": "3.36", "versionType": "custom"}, {"lessThan": "3.38.2", "status": "affected", "version": "3.38", "versionType": "custom"}]}], "source": "security@ubuntu.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gnome:gnome_display_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "475F1B20-AB5C-4B5B-80D7-437291D4D31F", "versionEndExcluding": "3.36.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:gnome:gnome_display_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "BAA7964B-BB51-4E2F-8400-F4B29DF9C0B1", "versionEndExcluding": "3.38.2", "versionStartIncluding": "3.38.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "gdm3 versiones anteriores a 3.36.2 o 3.38.2, comenzar\u00eda la configuraci\u00f3n inicial de gnom si gdm3 no puede ponerse en contacto con el servicio de cuentas por medio de dbus de manera oportuna; en Ubuntu (y potencialmente en sus derivados) esto podr\u00eda enlazarse con un problema adicional que podr\u00eda permitir a un usuario local crear una nueva cuenta privilegiada"}], "id": "CVE-2020-16125", "lastModified": "2026-06-17T02:57:45.200", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"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, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 0.5, "impactScore": 6.0, "source": "security@ubuntu.com", "type": "Secondary"}, {"cvssData": {"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, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-11-10T05:15:11.893", "references": [{"source": "security@ubuntu.com", "tags": ["Third Party Advisory"], "url": "https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314"}, {"source": "security@ubuntu.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://gitlab.gnome.org/GNOME/gdm/-/issues/642"}, {"source": "security@ubuntu.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Vendor Advisory"], "url": "https://gitlab.gnome.org/GNOME/gdm/-/issues/642"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon"}], "sourceIdentifier": "security@ubuntu.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-754"}], "source": "security@ubuntu.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-754"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:1586", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "gdm-1:3.28.3-39.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}], "bugzilla": {"description": "gdm: inability to timely contact accountservice via dbus leads gnome-initial-setup to creation of account with admin privileges", "id": "1901994", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901994"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.4", "cvss3_scoring_vector": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-636", "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.", "A vulnerability was found in GDM. If gdm can't contact the AccountService service via DBus in a timely manner it would default to assume there are no existing users and would allow the attacker to create a new user with high privileges."], "name": "CVE-2020-16125", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "gdm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "gdm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "gdm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "gdm", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2020-11-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-16125\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-16125\nhttps://gitlab.gnome.org/GNOME/gdm/-/issues/642"], "threat_severity": "Low"}

{}