CVE-2021-4034
- Source
- https://cve.org/CVERecord?id=CVE-2021-4034
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-4034.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-4034
- Downstream
- Related
- Published
- 2022-01-28T20:15:12.193Z
- Modified
- 2026-07-07T08:51:43.158172050Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- Database specific
{ "unresolved_ranges": [ { "extracted_events": [ { "fixed": "2.0" } ], "cpes": [ "cpe:2.3:o:siemens:scalance_lpe9403_firmware:*:*:*:*:*:*:*:*" ], "source": "CPE_RANGE", "vendor_product": "siemens:scalance_lpe9403_firmware" }, { "extracted_events": [ { "fixed": "3.3.0" } ], "vendor_product": "siemens:sinumerik_edge", "cpes": [ "cpe:2.3:a:siemens:sinumerik_edge:*:*:*:*:*:*:*:*" ], "source": "CPE_RANGE" }, { "extracted_events": [ { "introduced": "14.04" }, { "last_affected": "14.04" }, { "introduced": "16.04" }, { "last_affected": "16.04" }, { "introduced": "18.04" }, { "last_affected": "18.04" }, { "introduced": "20.04" }, { "last_affected": "20.04" }, { "introduced": "21.10" }, { "last_affected": "21.10" } ], "source": "CPE_STRING", "vendor_product": "canonical:ubuntu_linux", "cpes": [ "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "12.2.1.3.0" }, { "last_affected": "12.2.1.3.0" }, { "introduced": "12.2.1.4.0" }, { "last_affected": "12.2.1.4.0" } ], "cpes": [ "cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*", "cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*" ], "source": "CPE_STRING", "vendor_product": "oracle:http_server" }, { "extracted_events": [ { "introduced": "8.8" }, { "last_affected": "8.8" } ], "source": "CPE_STRING", "vendor_product": "oracle:zfs_storage_appliance_kit", "cpes": [ "cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "8.0" }, { "last_affected": "8.0" } ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "7.0" }, { "last_affected": "7.0" } ], "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*" ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux_desktop" }, { "extracted_events": [ { "introduced": "8.2" }, { "last_affected": "8.2" } ], "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*" ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux_eus" }, { "extracted_events": [ { "introduced": "7.0" }, { "last_affected": "7.0" }, { "introduced": "8.0" }, { "last_affected": "8.0" } ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux_for_ibm_z_systems", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux_for_ibm_z_systems_eus", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "7.0" }, { "last_affected": "7.0" } ], "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*" ], "vendor_product": "redhat:enterprise_linux_for_power_big_endian", "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "7.0" }, { "last_affected": "7.0" }, { "introduced": "8.0" }, { "last_affected": "8.0" } ], "vendor_product": "redhat:enterprise_linux_for_power_little_endian", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*" ], "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "8.1" }, { "last_affected": "8.1" }, { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "vendor_product": "redhat:enterprise_linux_for_power_little_endian_eus", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.1:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*" ], "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "7.0" }, { "last_affected": "7.0" } ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux_for_scientific_computing", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "6.0" }, { "last_affected": "6.0" }, { "introduced": "7.0" }, { "last_affected": "7.0" } ], "vendor_product": "redhat:enterprise_linux_server", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*" ], "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "7.3" }, { "last_affected": "7.3" }, { "introduced": "7.4" }, { "last_affected": "7.4" }, { "introduced": "7.6" }, { "last_affected": "7.6" }, { "introduced": "7.7" }, { "last_affected": "7.7" }, { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*" ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux_server_aus" }, { "extracted_events": [ { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux_server_eus", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server_eus:8.4:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "7.6" }, { "last_affected": "7.6" }, { "introduced": "7.7" }, { "last_affected": "7.7" }, { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*" ], "source": "CPE_STRING", "vendor_product": "redhat:enterprise_linux_server_tus" }, { "extracted_events": [ { "introduced": "7.6" }, { "last_affected": "7.6" }, { "introduced": "7.7" }, { "last_affected": "7.7" }, { "introduced": "8.1" }, { "last_affected": "8.1" }, { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "vendor_product": "redhat:enterprise_linux_server_update_services_for_sap_solutions", "cpes": [ "cpe:2.3:a:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.6:*:*:*:*:*:*:*", "cpe:2.3:a:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.7:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*" ], "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "7.0" }, { "last_affected": "7.0" } ], "vendor_product": "redhat:enterprise_linux_workstation", "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*" ], "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "1.0-update3_build5871" }, { "last_affected": "1.0-update3_build5871" } ], "vendor_product": "starwindsoftware:command_center", "cpes": [ "cpe:2.3:a:starwindsoftware:command_center:1.0:update3_build5871:*:*:*:*:*:*" ], "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "v8-build14338" }, { "last_affected": "v8-build14338" } ], "vendor_product": "starwindsoftware:starwind_virtual_san", "cpes": [ "cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build14338:*:*:*:*:*:*" ], "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "7.0" }, { "last_affected": "7.0" } ], "source": "CPE_STRING", "vendor_product": "suse:enterprise_storage", "cpes": [ "cpe:2.3:a:suse:enterprise_storage:7.0:*:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "15-sp2" }, { "last_affected": "15-sp2" } ], "cpes": [ "cpe:2.3:o:suse:linux_enterprise_desktop:15:sp2:*:*:*:*:*:*" ], "source": "CPE_STRING", "vendor_product": "suse:linux_enterprise_desktop" }, { "extracted_events": [ { "introduced": "15.0-sp2" }, { "last_affected": "15.0-sp2" } ], "cpes": [ "cpe:2.3:a:suse:linux_enterprise_high_performance_computing:15.0:sp2:*:*:-:*:*:*" ], "source": "CPE_STRING", "vendor_product": "suse:linux_enterprise_high_performance_computing" }, { "extracted_events": [ { "introduced": "15-sp2" }, { "last_affected": "15-sp2" }, { "introduced": "15-sp2" }, { "last_affected": "15-sp2" } ], "cpes": [ "cpe:2.3:o:suse:linux_enterprise_server:15:sp2:*:*:*:-:*:*", "cpe:2.3:o:suse:linux_enterprise_server:15:sp2:*:*:*:sap:*:*" ], "vendor_product": "suse:linux_enterprise_server", "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "12-sp5" }, { "last_affected": "12-sp5" } ], "source": "CPE_STRING", "vendor_product": "suse:linux_enterprise_workstation_extension", "cpes": [ "cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:sp5:*:*:*:*:*:*" ] }, { "extracted_events": [ { "introduced": "4.1" }, { "last_affected": "4.1" } ], "vendor_product": "suse:manager_proxy", "cpes": [ "cpe:2.3:a:suse:manager_proxy:4.1:*:*:*:*:*:*:*" ], "source": "CPE_STRING" }, { "extracted_events": [ { "introduced": "4.1" }, { "last_affected": "4.1" } ], "source": "CPE_STRING", "vendor_product": "suse:manager_server", "cpes": [ "cpe:2.3:a:suse:manager_server:4.1:*:*:*:*:*:*:*" ] } ] }- References
-
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-4034
- http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html
- https://access.redhat.com/security/vulnerabilities/RHSB-2022-001
- https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf
- https://www.starwindsoftware.com/security/sw-20220818-0001/
- https://www.suse.com/support/kb/doc/?id=000020564
- https://bugzilla.redhat.com/show_bug.cgi?id=2025869
- https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683
- https://www.oracle.com/security-alerts/cpuapr2022.html
- http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html
- https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt
- https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/
- https://www.vicarius.io/vsociety/posts/pwnkit-pkexec-lpe-cve-2021-4034
Affected packages
Git / gitlab.freedesktop.org/polkit/polkit
Affected ranges
- Type
- GIT
- Repo
- https://gitlab.freedesktop.org/polkit/polkit
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
{ "extracted_events": [ { "introduced": "0" }, { "fixed": "121" } ], "cpe": "cpe:2.3:a:polkit_project:polkit:*:*:*:*:*:*:*:*", "source": [ "CPE_RANGE", "REFERENCES" ] }
Affected versions
0.*
0.100
0.101
0.102
0.103
0.104
0.105
0.106
0.107
0.108
0.109
0.110
0.111
0.112
0.113
0.114
0.115
0.116
0.117
0.118
0.119
0.120
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
Other
POLICY_KIT_0_3
POLICY_KIT_0_4
POLICY_KIT_0_5
POLICY_KIT_0_6
POLICY_KIT_0_7
POLICY_KIT_0_8
POLICY_KIT_0_9
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