CVE-2021-3560

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This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."}, {"lang": "es", "value": "Se ha detectado que polkit pod\u00eda ser enga\u00f1ado para omitir las comprobaciones de credenciales para las peticiones de D-Bus, elevando los privilegios del solicitante al usuario root. Este fallo podr\u00eda ser usado por un atacante local no privilegiado para, por ejemplo, crear un nuevo administrador local. La mayor amenaza de esta vulnerabilidad es para la confidencialidad e integridad de los datos, as\u00ed como para la disponibilidad del sistema"}], "id": "CVE-2021-3560", "lastModified": "2026-06-17T04:05:20.767", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-3560", "options": [{"exploitation": "active"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-01-29T21:24:12.585039Z", "version": "2.0.3"}}]}, "published": "2022-02-16T19:15:08.450", "references": [{"source": "secalert@redhat.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1961710"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1961710"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["US Government Resource"], "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-754"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Kevin Backhouse (GitHub Security Lab) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:2238", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "polkit-0:0.115-11.el8_4.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-06-03T00:00:00Z"}, {"advisory": "RHSA-2021:2236", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "polkit-0:0.115-9.el8_1.1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-06-03T00:00:00Z"}, {"advisory": "RHSA-2021:2237", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "polkit-0:0.115-11.el8_2.1", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-06-03T00:00:00Z"}, {"advisory": "RHSA-2021:2555", "cpe": "cpe:/a:redhat:openshift:4.7::el7", "package": "cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el8", "product_name": "Red Hat OpenShift Container Platform 4.7", "release_date": "2021-07-06T00:00:00Z"}, {"advisory": "RHSA-2021:2555", "cpe": "cpe:/a:redhat:openshift:4.7::el7", "package": "dhcp-12:4.3.6-41.el8_3.1", "product_name": "Red Hat OpenShift Container Platform 4.7", "release_date": "2021-07-06T00:00:00Z"}, {"advisory": "RHSA-2021:2555", "cpe": "cpe:/a:redhat:openshift:4.7::el7", "package": "openshift-clients-0:4.7.0-202106252127.p0.git.8b4b094.el7", "product_name": "Red Hat OpenShift Container Platform 4.7", "release_date": "2021-07-06T00:00:00Z"}, {"advisory": "RHSA-2021:2555", "cpe": "cpe:/a:redhat:openshift:4.7::el7", "package": "openshift-kuryr-0:4.7.0-202106232224.p0.git.c7654fb.el8", "product_name": "Red Hat OpenShift Container Platform 4.7", "release_date": "2021-07-06T00:00:00Z"}, {"advisory": "RHSA-2021:2555", "cpe": "cpe:/a:redhat:openshift:4.7::el7", "package": "polkit-0:0.115-11.el8_3.2", "product_name": "Red Hat OpenShift Container Platform 4.7", "release_date": "2021-07-06T00:00:00Z"}, {"advisory": "RHSA-2021:2522", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "redhat-virtualization-host-0:4.4.6-20210615.0.el8_4", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2021-06-22T00:00:00Z"}], "bugzilla": {"description": "polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync()", "id": "1961710", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1961710"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-754", "details": ["It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.", "It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible."}, "name": "CVE-2021-3560", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "polkit", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "polkit", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "polkit", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-06-03T06:55:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3560\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3560\nhttps://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/\nhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog"], "threat_severity": "Important"}

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