CVE-2021-4034 (GCVE-0-2021-4034)
Vulnerability from cvelistv5
Published
2022-01-28 00:00
Modified
2025-07-30 01:37
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
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
secalert@redhat.com http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
secalert@redhat.com http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html Third Party Advisory, VDB Entry
secalert@redhat.com https://access.redhat.com/security/vulnerabilities/RHSB-2022-001 Mitigation, Vendor Advisory
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2025869 Issue Tracking, Patch
secalert@redhat.com https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf Third Party Advisory
secalert@redhat.com https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683 Patch
secalert@redhat.com https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
secalert@redhat.com https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt Exploit, Mitigation, Third Party Advisory
secalert@redhat.com https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/ Exploit, Third Party Advisory
secalert@redhat.com https://www.starwindsoftware.com/security/sw-20220818-0001/ Third Party Advisory
secalert@redhat.com https://www.suse.com/support/kb/doc/?id=000020564 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/security/vulnerabilities/RHSB-2022-001 Mitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.redhat.com/show_bug.cgi?id=2025869 Issue Tracking, Patch
af854a3a-2127-422b-91ae-364da2661108 https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683 Patch
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt Exploit, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/ Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.starwindsoftware.com/security/sw-20220818-0001/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.suse.com/support/kb/doc/?id=000020564 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.vicarius.io/vsociety/posts/pwnkit-pkexec-lpe-cve-2021-4034 Exploit, Third Party Advisory
Impacted products
Vendor Product Version
n/a polkit Version: all
CISA Known exploited vulnerability
Data from the Known Exploited Vulnerabilities Catalog

Date added: 2022-06-27

Due date: 2022-07-18

Required action: Apply updates per vendor instructions.

Used in ransomware: Unknown

Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-4034

Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-09-23T18:05:54.355Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.vicarius.io/vsociety/posts/pwnkit-pkexec-lpe-cve-2021-4034"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://access.redhat.com/security/vulnerabilities/RHSB-2022-001"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2025869"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.suse.com/support/kb/doc/?id=000020564"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.starwindsoftware.com/security/sw-20220818-0001/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/"
          }
        ],
        "title": "CVE Program Container",
        "x_generator": {
          "engine": "ADPogram 0.0.1"
        }
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-4034",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-04T14:58:14.217207Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2022-06-27",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-4034"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-30T01:37:49.906Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "timeline": [
          {
            "lang": "en",
            "time": "2022-06-27T00:00:00+00:00",
            "value": "CVE-2021-4034 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "polkit",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "all"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A local privilege escalation vulnerability was found on polkit\u0027s 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\u0027t 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\u0027ll 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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "(CWE-787|CWE-125)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-10-18T00:16:44.133Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://access.redhat.com/security/vulnerabilities/RHSB-2022-001"
        },
        {
          "url": "https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt"
        },
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2025869"
        },
        {
          "url": "https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "url": "http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html"
        },
        {
          "url": "http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html"
        },
        {
          "url": "https://www.suse.com/support/kb/doc/?id=000020564"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf"
        },
        {
          "url": "https://www.starwindsoftware.com/security/sw-20220818-0001/"
        },
        {
          "url": "https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-4034",
    "datePublished": "2022-01-28T00:00:00.000Z",
    "dateReserved": "2021-11-29T00:00:00.000Z",
    "dateUpdated": "2025-07-30T01:37:49.906Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2021-4034",
      "cwes": "[\"CWE-787\"]",
      "dateAdded": "2022-06-27",
      "dueDate": "2022-07-18",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-4034",
      "product": "Polkit",
      "requiredAction": "Apply updates per vendor instructions.",
      "shortDescription": "The Red Hat polkit pkexec utility contains an out-of-bounds read and write vulnerability that allows for privilege escalation with administrative rights.",
      "vendorProject": "Red Hat",
      "vulnerabilityName": "Red Hat Polkit Out-of-Bounds Read and Write Vulnerability"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-4034\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2022-01-28T20:15:12.193\",\"lastModified\":\"2025-04-03T18:53:12.960\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A local privilege escalation vulnerability was found on polkit\u0027s 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\u0027t 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\u0027ll 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 encontr\u00f3 una vulnerabilidad de escalada de privilegios local en la utilidad pkexec de polkit. La aplicaci\u00f3n pkexec es una herramienta setuid dise\u00f1ada para permitir a usuarios sin privilegios ejecutar comandos como usuarios privilegiados de acuerdo con pol\u00edticas predefinidas. La versi\u00f3n actual de pkexec no maneja correctamente el recuento de par\u00e1metros 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 c\u00f3digo arbitrario. Cuando se ejecuta con \u00e9xito, el ataque puede provocar una escalada de privilegios locales otorgando a los usuarios sin privilegios derechos administrativos en la m\u00e1quina de destino.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:C/I:C/A:C\",\"baseScore\":7.2,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":3.9,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"cisaExploitAdd\":\"2022-06-27\",\"cisaActionDue\":\"2022-07-18\",\"cisaRequiredAction\":\"Apply updates per vendor instructions.\",\"cisaVulnerabilityName\":\"Red Hat Polkit Out-of-Bounds Read and Write Vulnerability\",\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"},{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:polkit_project:polkit:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"121\",\"matchCriteriaId\":\"F01D94C9-1E04-413B-8636-1AAC6D9E84D6\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"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\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"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\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"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\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"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\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:sinumerik_edge:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.3.0\",\"matchCriteriaId\":\"D069EA07-88A5-4058-A2BC-44F94D9ACC9A\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:scalance_lpe9403_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.0\",\"matchCriteriaId\":\"9FC41AD4-69E5-48D8-8216-671F485C3C40\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:scalance_lpe9403:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"52A77C9D-E59C-4397-B834-797D7B334A6B\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"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\"}]}]}],\"references\":[{\"url\":\"http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Exploit\",\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://access.redhat.com/security/vulnerabilities/RHSB-2022-001\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mitigation\",\"Vendor Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2025869\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Patch\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuapr2022.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Exploit\",\"Mitigation\",\"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\":[\"Exploit\",\"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\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://access.redhat.com/security/vulnerabilities/RHSB-2022-001\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mitigation\",\"Vendor Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2025869\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Patch\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuapr2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Mitigation\",\"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\":[\"Exploit\",\"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\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.vicarius.io/vsociety/posts/pwnkit-pkexec-lpe-cve-2021-4034\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2023-10-18T00:16:44.133Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A local privilege escalation vulnerability was found on polkit\u0027s 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\u0027t 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\u0027ll 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.\"}], \"affected\": [{\"vendor\": \"n/a\", \"product\": \"polkit\", \"versions\": [{\"version\": \"all\", \"status\": \"affected\"}]}], \"references\": [{\"url\": \"https://access.redhat.com/security/vulnerabilities/RHSB-2022-001\"}, {\"url\": \"https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt\"}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2025869\"}, {\"url\": \"https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683\"}, {\"url\": \"https://www.oracle.com/security-alerts/cpuapr2022.html\"}, {\"url\": \"http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html\"}, {\"url\": \"http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html\"}, {\"url\": \"https://www.suse.com/support/kb/doc/?id=000020564\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf\"}, {\"url\": \"https://www.starwindsoftware.com/security/sw-20220818-0001/\"}, {\"url\": \"https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/\"}], \"problemTypes\": [{\"descriptions\": [{\"type\": \"CWE\", \"lang\": \"en\", \"description\": \"(CWE-787|CWE-125)\", \"cweId\": \"CWE-787\"}]}]}, \"adp\": [{\"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-09-23T18:05:54.355Z\"}, \"references\": [{\"url\": \"https://www.vicarius.io/vsociety/posts/pwnkit-pkexec-lpe-cve-2021-4034\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://access.redhat.com/security/vulnerabilities/RHSB-2022-001\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2025869\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://www.oracle.com/security-alerts/cpuapr2022.html\"}, {\"tags\": [\"x_transferred\"], \"url\": \"http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html\"}, {\"tags\": [\"x_transferred\"], \"url\": \"http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://www.suse.com/support/kb/doc/?id=000020564\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://www.starwindsoftware.com/security/sw-20220818-0001/\"}, {\"tags\": [\"x_transferred\"], \"url\": \"https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/\"}], \"title\": \"CVE Program Container\", \"x_generator\": {\"engine\": \"ADPogram 0.0.1\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-4034\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-11-04T14:58:14.217207Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2022-06-27\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-4034\"}}}], \"timeline\": [{\"time\": \"2022-06-27T00:00:00+00:00\", \"lang\": \"en\", \"value\": \"CVE-2021-4034 added to CISA KEV\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-29T16:47:04.068Z\"}}]}",
      "cveMetadata": "{\"state\": \"PUBLISHED\", \"cveId\": \"CVE-2021-4034\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"assignerShortName\": \"redhat\", \"dateUpdated\": \"2025-07-30T01:37:49.906Z\", \"dateReserved\": \"2021-11-29T00:00:00.000Z\", \"datePublished\": \"2022-01-28T00:00:00.000Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.