fkie_cve-2021-4034
Vulnerability from fkie_nvd
Published
2022-01-28 20:15
Modified
2024-11-21 06:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.
References
Impacted products
{ cisaActionDue: "2022-07-18", cisaExploitAdd: "2022-06-27", cisaRequiredAction: "Apply updates per vendor instructions.", cisaVulnerabilityName: "Red Hat Polkit Out-of-Bounds Read and Write Vulnerability", configurations: [ { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:a:polkit_project:polkit:*:*:*:*:*:*:*:*", matchCriteriaId: "F01D94C9-1E04-413B-8636-1AAC6D9E84D6", versionEndExcluding: "121", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:a:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.6:*:*:*:*:*:*:*", matchCriteriaId: "CB70A2F8-EAB3-4898-9353-F679FF721C82", vulnerable: true, }, { criteria: "cpe:2.3:a:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.7:*:*:*:*:*:*:*", matchCriteriaId: "EB3AC848-C2D0-4878-8619-F5815173555D", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", matchCriteriaId: "F4CFF558-3C47-480D-A2F0-BABF26042943", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*", matchCriteriaId: "33C068A4-3780-4EAB-A937-6082DF847564", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*", matchCriteriaId: "831F0F47-3565-4763-B16F-C87B1FF2035E", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*", matchCriteriaId: "566507B6-AC95-47F7-A3FB-C6F414E45F51", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*", matchCriteriaId: "87C21FE1-EA5C-498F-9C6C-D05F91A88217", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*", matchCriteriaId: "0AB105EC-19F9-424A-86F1-305A6FD74A9C", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*", matchCriteriaId: "8C9BD9AE-46FC-4609-8D99-A3CFE91D58D1", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*", matchCriteriaId: "1CDCFF34-6F1D-45A1-BE37-6A0E17B04801", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*", matchCriteriaId: "B4A684C7-88FD-43C4-9BDB-AE337FCBD0AB", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*", matchCriteriaId: "47811209-5CE5-4375-8391-B0A7F6A0E420", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.1:*:*:*:*:*:*:*", matchCriteriaId: "8EB6F417-25D0-4A28-B7BA-D21929EAA9E9", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*", matchCriteriaId: "E5C80DB2-4A78-4EC9-B2A8-1E4D902C4834", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*", matchCriteriaId: "983533DD-3970-4A37-9A9C-582BD48AA1E5", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*", matchCriteriaId: "37CE1DC7-72C5-483C-8921-0B462C8284D1", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*", matchCriteriaId: "9BBCD86A-E6C7-4444-9D74-F861084090F0", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*", matchCriteriaId: "51EF4996-72F4-4FA4-814F-F5991E7A8318", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*", matchCriteriaId: "98381E61-F082-4302-B51F-5648884F998B", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", matchCriteriaId: "D99A687E-EAE6-417E-A88E-D0082BC194CD", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", matchCriteriaId: "B353CE99-D57C-465B-AAB0-73EF581127D1", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*", matchCriteriaId: "7431ABC1-9252-419E-8CC1-311B41360078", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*", matchCriteriaId: "6897676D-53F9-45B3-B27F-7FF9A4C58D33", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*", matchCriteriaId: "E28F226A-CBC7-4A32-BE58-398FA5B42481", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_eus:8.4:*:*:*:*:*:*:*", matchCriteriaId: "61917784-47F1-4328-BA1F-A88C5E23496B", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", matchCriteriaId: "B76AA310-FEC7-497F-AF04-C3EC1E76C4CC", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*", matchCriteriaId: "17F256A9-D3B9-4C72-B013-4EFD878BFEA8", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*", matchCriteriaId: "B09ACF2D-D83F-4A86-8185-9569605D8EE1", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*", matchCriteriaId: "AC10D919-57FD-4725-B8D2-39ECB476902F", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*", matchCriteriaId: "48C2E003-A71C-4D06-B8B3-F93160568182", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*", matchCriteriaId: "3921C1CF-A16D-4727-99AD-03EFFA7C91CA", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*", matchCriteriaId: "BC6DD887-9744-43EA-8B3C-44C6B6339590", vulnerable: true, }, { criteria: "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", matchCriteriaId: "825ECE2D-E232-46E0-A047-074B34DB1E97", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", matchCriteriaId: "815D70A8-47D3-459C-A32C-9FEACA0659D1", vulnerable: true, }, { criteria: "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", matchCriteriaId: "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6", vulnerable: true, }, { criteria: "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", matchCriteriaId: "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D", vulnerable: true, }, { criteria: "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", matchCriteriaId: "902B8056-9E37-443B-8905-8AA93E2447FB", vulnerable: true, }, { criteria: "cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*", matchCriteriaId: "AAE4D2D0-CEEB-416F-8BC5-A7987DF56190", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:a:suse:enterprise_storage:7.0:*:*:*:*:*:*:*", matchCriteriaId: "F7305944-AC9C-47A3-AADF-71A8B24830D1", vulnerable: true, }, { criteria: "cpe:2.3:a:suse:linux_enterprise_high_performance_computing:15.0:sp2:*:*:-:*:*:*", matchCriteriaId: "CDFEA8DC-7D78-4ACD-A95C-9408F45EEAE7", vulnerable: true, }, { criteria: "cpe:2.3:a:suse:manager_proxy:4.1:*:*:*:*:*:*:*", matchCriteriaId: "9910C73A-3BCD-4F56-8C7D-79CB289640A2", vulnerable: true, }, { criteria: "cpe:2.3:a:suse:manager_server:4.1:*:*:*:*:*:*:*", matchCriteriaId: "B5810E98-7BF5-42E2-9DE9-661049ABE367", vulnerable: true, }, { criteria: "cpe:2.3:o:suse:linux_enterprise_desktop:15:sp2:*:*:*:*:*:*", matchCriteriaId: "8C4F62C0-4188-433A-8292-559025CA23C0", vulnerable: true, }, { criteria: "cpe:2.3:o:suse:linux_enterprise_server:15:sp2:*:*:*:-:*:*", matchCriteriaId: "07D416C5-4A0F-4EF3-A3DE-A028AAA4F739", vulnerable: true, }, { criteria: "cpe:2.3:o:suse:linux_enterprise_server:15:sp2:*:*:*:sap:*:*", matchCriteriaId: "F6C1736B-0505-4C19-98B7-90C8359F3BCD", vulnerable: true, }, { criteria: "cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:sp5:*:*:*:*:*:*", matchCriteriaId: "243B9B56-C744-4C1C-B42E-158C1B041B6A", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*", matchCriteriaId: "DFC79B17-E9D2-44D5-93ED-2F959E7A3D43", vulnerable: true, }, { criteria: "cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*", matchCriteriaId: "AD04BEE5-E9A8-4584-A68C-0195CE9C402C", vulnerable: true, }, { criteria: "cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*", matchCriteriaId: "D3E503FB-6279-4D4A-91D8-E237ECF9D2B0", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:a:siemens:sinumerik_edge:*:*:*:*:*:*:*:*", matchCriteriaId: "D069EA07-88A5-4058-A2BC-44F94D9ACC9A", versionEndExcluding: "3.3.0", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:o:siemens:scalance_lpe9403_firmware:*:*:*:*:*:*:*:*", matchCriteriaId: "9FC41AD4-69E5-48D8-8216-671F485C3C40", versionEndExcluding: "2.0", vulnerable: true, }, ], negate: false, operator: "OR", }, { cpeMatch: [ { criteria: "cpe:2.3:h:siemens:scalance_lpe9403:-:*:*:*:*:*:*:*", matchCriteriaId: "52A77C9D-E59C-4397-B834-797D7B334A6B", vulnerable: false, }, ], negate: false, operator: "OR", }, ], operator: "AND", }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:a:starwindsoftware:command_center:1.0:update3_build5871:*:*:*:*:*:*", matchCriteriaId: "B323EF31-7A67-4458-8323-86F8AA58268C", vulnerable: true, }, { criteria: "cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build14338:*:*:*:*:*:*", matchCriteriaId: "14AF427F-BC75-40C7-9579-34A74E2E475D", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, ], cveTags: [], descriptions: [ { lang: "en", value: "A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.", }, { lang: "es", value: "Se encontró una vulnerabilidad de escalada de privilegios local en la utilidad pkexec de polkit. La aplicación pkexec es una herramienta setuid diseñada para permitir a usuarios sin privilegios ejecutar comandos como usuarios privilegiados de acuerdo con políticas predefinidas. La versión actual de pkexec no maneja correctamente el recuento de parámetros de llamada y termina intentando ejecutar variables de entorno como comandos. Un atacante puede aprovechar esto creando variables de entorno de tal manera que induzcan a pkexec a ejecutar código arbitrario. Cuando se ejecuta con éxito, el ataque puede provocar una escalada de privilegios locales otorgando a los usuarios sin privilegios derechos administrativos en la máquina de destino.", }, ], id: "CVE-2021-4034", lastModified: "2024-11-21T06:36:45.880", 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, 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", }, ], }, published: "2022-01-28T20:15:12.193", references: [ { source: "secalert@redhat.com", tags: [ "Exploit", "Third Party Advisory", "VDB Entry", ], url: "http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html", }, { source: "secalert@redhat.com", tags: [ "Third Party Advisory", "VDB Entry", ], url: "http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html", }, { source: "secalert@redhat.com", tags: [ "Mitigation", "Vendor Advisory", ], url: "https://access.redhat.com/security/vulnerabilities/RHSB-2022-001", }, { source: "secalert@redhat.com", tags: [ "Issue Tracking", "Patch", ], url: "https://bugzilla.redhat.com/show_bug.cgi?id=2025869", }, { source: "secalert@redhat.com", tags: [ "Third Party Advisory", ], url: "https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf", }, { source: "secalert@redhat.com", tags: [ "Patch", ], url: "https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683", }, { source: "secalert@redhat.com", tags: [ "Patch", "Third Party Advisory", ], url: "https://www.oracle.com/security-alerts/cpuapr2022.html", }, { source: "secalert@redhat.com", tags: [ "Exploit", "Mitigation", "Third Party Advisory", ], url: "https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt", }, { source: "secalert@redhat.com", tags: [ "Exploit", "Third Party Advisory", ], url: "https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/", }, { source: "secalert@redhat.com", tags: [ "Third Party Advisory", ], url: "https://www.starwindsoftware.com/security/sw-20220818-0001/", }, { source: "secalert@redhat.com", tags: [ "Third Party Advisory", ], url: "https://www.suse.com/support/kb/doc/?id=000020564", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Exploit", "Third Party Advisory", "VDB Entry", ], url: "http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", "VDB Entry", ], url: "http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Mitigation", "Vendor Advisory", ], url: "https://access.redhat.com/security/vulnerabilities/RHSB-2022-001", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Issue Tracking", "Patch", ], url: "https://bugzilla.redhat.com/show_bug.cgi?id=2025869", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", ], url: "https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", "Third Party Advisory", ], url: "https://www.oracle.com/security-alerts/cpuapr2022.html", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Exploit", "Mitigation", "Third Party Advisory", ], url: "https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Exploit", "Third Party Advisory", ], url: "https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", ], url: "https://www.starwindsoftware.com/security/sw-20220818-0001/", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", ], url: "https://www.suse.com/support/kb/doc/?id=000020564", }, { source: "af854a3a-2127-422b-91ae-364da2661108", url: "https://www.vicarius.io/vsociety/posts/pwnkit-pkexec-lpe-cve-2021-4034", }, ], sourceIdentifier: "secalert@redhat.com", vulnStatus: "Modified", weaknesses: [ { description: [ { lang: "en", value: "CWE-787", }, ], source: "secalert@redhat.com", type: "Secondary", }, { description: [ { lang: "en", value: "CWE-125", }, { lang: "en", value: "CWE-787", }, ], source: "nvd@nist.gov", type: "Primary", }, ], }
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.