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Full vulnerability report · 2022
CVE-2021-4034High confidence

Red Hat Polkit Out-of-Bounds Read and Write Vulnerability

Red Hat · Polkit

7.8HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2022-07-18 as the remediation due date.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

3 current
SSA-419740 · CSAF 2.0 · revision 1 · finalSiemens ProductCERTSSA-419740: Multiple Third-Party Component Vulnerabilities in RUGGEDCOM and SCALANCE Products before V7.2
20 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2)
  • RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2)
  • SCALANCE M804PB (6GK5804-0AP00-2AA2)
  • SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2)
  • SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2)
  • SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2)
  • SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2)
  • SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2)
  • SCALANCE M874-2 (6GK5874-2AA00-2AA2)
  • SCALANCE M874-3 (6GK5874-3AA00-2AA2)
  • SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2)
  • SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2)
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.
Remediation
Update to V7.2 or later version
SSA-330556 · CSAF 2.0 · revision 1 · finalSiemens ProductCERTSSA-330556: PwnKit Vulnerability in SCALANCE LPE9403 and SINUMERIK Edge Products (CVE-2021-4034)
2 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SCALANCE LPE9403
  • SINUMERIK Edge
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.
Remediation
Update to V2.0 or later version
SCA-2022-0002 · CSAF 2.0 · revision 3 · finalSICK PSIRTPwnKit vulnerability affects multiple SICK IPCs
17 fixed

The vendor explicitly identifies these products or versions as containing the fix.

  • SICK PC, MXE5401, M16G, 1TB, LINUX, CUSTOM all versions (CentOS)
  • SICK PC, MXE5401, M16G, 2TB, C7 all versions (CentOS)
  • SICK PC, MXE5401, M16G, 1TB, C7 all versions (CentOS)
  • SICK PC, EOS1300, M16G, 1TB, C7 all versions (CentOS)
  • SICK PC, EOS1300, M16G, 2TB, C7 all versions (CentOS)
  • SICK PC, MXE-5401,R0,2TB,SS-X all versions (RedHat)
  • SICK PC, MXE-5401,R0,2TB,UDS-X all versions (RedHat)
  • SICK PC, MXE-5321, SSXT, R0, 2TB all versions (RedHat)
  • SICK PC, MXE-5321, SSAT, R0, 2TB all versions (RedHat)
  • SICK PC, MXE-5321, UDS, R0, 2TB all versions (RedHat)
  • SICK PC, MXE-5401, SSAT, R0, 2TB all versions (RedHat)
  • SICK PC, MXE-5401, UDS, R0, 2TB all versions (RedHat)
Summary
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.
Remediation
Update to newest version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2021-33934

CISA KEV mirrored by ENISA

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.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 27 Jun 2022. Evidence sources: cisa_kev.
ENISA score
7.8 · CVSS 3.1
Advisory evidence
28 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_redhat · RHSA-2022:0540Red Hat Security Advisory: Red Hat Virtualization Host security update [ovirt-4.4.10-1]
  • csaf_redhat · RHSA-2022:0272Red Hat Security Advisory: polkit security update
  • csaf_redhat · RHSA-2022:0273Red Hat Security Advisory: polkit security update
  • csaf_redhat · RHSA-2022:0267Red Hat Security Advisory: polkit security update
  • csaf_redhat · RHSA-2022:0266Red Hat Security Advisory: polkit security update
  • csaf_redhat · RHSA-2022:0269Red Hat Security Advisory: polkit security update
  • csaf_suse · SUSE-SU-2022:0190-1Security update for polkit
  • csaf_redhat · RHSA-2022:0268Red Hat Security Advisory: polkit security update
  • csaf_redhat · RHSA-2022:0265Red Hat Security Advisory: polkit security update
  • csaf_suse · SUSE-SU-2022:0191-1Security update for polkit
  • csaf_redhat · RHSA-2022:0274Red Hat Security Advisory: polkit security update
  • csaf_redhat · RHSA-2022:0443Red Hat Security Advisory: RHV-H security update (redhat-virtualization-host) 4.3.21
  • csaf_suse · SUSE-SU-2022:0189-1Security update for polkit
  • csaf_redhat · RHSA-2022:0271Red Hat Security Advisory: polkit security update
  • csaf_opensuse · openSUSE-SU-2022:0190-1Security update for polkit
  • csaf_redhat · RHSA-2022:0270Red Hat Security Advisory: polkit security update
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2022-07-18 as the remediation due date.

Patch available
01

What, why and how

The Red Hat polkit pkexec utility contains an out-of-bounds read and write vulnerability that allows for privilege escalation with administrative rights.

What

The Red Hat polkit pkexec utility contains an out-of-bounds read and write vulnerability that allows for privilege escalation with administrative rights.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

What

The Red Hat polkit pkexec utility contains an out-of-bounds read and write vulnerability that allows for privilege escalation with administrative rights.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2022-06-27. Known ransomware campaign use is recorded.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
local access → Out-of-bounds Write → gain additional privileges
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-787 ↗

CWE-787: Out-of-bounds Write. The product writes data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Privilege escalationCWE-787CISA KEVPublic exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2021-33934Known-exploited evidence recorded

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.

Official EUVD record
BSI · German · WID-SEC-W-2022-0432Xerox FreeFlow Print Server: Mehrere Schwachstellen

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität zu gefährden.

Official advisory
BSI · German · WID-SEC-W-2022-0302Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um beliebigen Programmcode auszuführen, einen Cross-Site-Scripting-Angriff durchzuführen, Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen oder Dateien zu manipulieren.

Official advisory
BSI · German · WID-SEC-W-2023-0426IBM Spectrum Protect: Mehrere Schwachstellen

Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in IBM Spectrum Protect ausnutzen, um einen 'Denial of Service'-Zustand herbeizuführen, Sicherheitsmaßnahmen zu umgehen, einen 'Cross-Site-Scripting'-Angriff durchzuführen, beliebigen Code auszuführen, sensible Informationen offenzulegen und seine Privilegien zu erweitern.

Official advisory
BSI · German · WID-SEC-W-2022-1483PolicyKit: Schwachstelle ermöglicht Privilegieneskalation

Ein lokaler Angreifer kann eine Schwachstelle in PolicyKit ausnutzen, um seine Privilegien zu erhöhen.

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0220Multiples vulnérabilités dans les produits Siemens

rité Siemens ssa-851884 du 14 mars 2023 https://cert-portal.siemens.com/productcert/html/ssa-851884.html Référence CVE CVE-2017-5715 https://www.cve.org/CVERecord?id=CVE-2017-5715 Référence CVE CVE-2018-12886 https://www.cve.org/CVERecord?id=CVE-2018-12886 Référence CVE CVE-2018-25032 https://www.cve.org/CVERecord?id=CVE-2018-25032 Référence CVE CVE-2019-1071 https://www.cve.org/CVERecord?id=CVE-2019-1071 Référence CVE CVE-2019-1073 https://www.cve.org/CVERecord?id=CVE-2019-1073 Référence CVE CVE-2019-1125 https://www.cve.org/CVERecord?id=CVE-2019-1125 Référence CVE CVE-2021-26401 https://www.cve.org/CVERecord?id=CVE-2021-26401 Référence CVE CVE-2021-4034 https://www.cve.org/CVERecord?id=CVE-2021-4034 Référence CVE CVE-2021-4149 https://www.cve.org/CVERecord?id=CVE-2021-4149 Référence CVE CVE-2021-42373 https://www.cve.org/CVERecord?id=CVE-2021-42373 Référence CVE CVE-2021-42374 https://www.cve.org/CVERecord?id=CVE-2021-42374 Référence CVE CVE-2021-42375 https://www.cve.org/CVERecord?id=CVE-2021-42375 Référence CVE CVE-2021-42376 https://www.cve.org/CVERecord?id=CVE-2021-42376 Référence CVE CVE-2021-42377 https://www.cve.org/CVERecord?id=CVE-2021-42377 Référence CVE CVE-2021-42378 https://www.cve.org/CVERecord?id=CVE-2021-42378 Référence CVE CVE-2021-42379 https://www.cve.org/CVERecord?id=CVE

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0051Multiples vulnérabilités dans les produits Juniper

rg/CVERecord?id=CVE-2021-3621 Référence CVE CVE-2021-3712 https://www.cve.org/CVERecord?id=CVE-2021-3712 Référence CVE CVE-2021-3715 https://www.cve.org/CVERecord?id=CVE-2021-3715 Référence CVE CVE-2021-3752 https://www.cve.org/CVERecord?id=CVE-2021-3752 Référence CVE CVE-2021-37576 https://www.cve.org/CVERecord?id=CVE-2021-37576 Référence CVE CVE-2021-3765 https://www.cve.org/CVERecord?id=CVE-2021-3765 Référence CVE CVE-2021-39275 https://www.cve.org/CVERecord?id=CVE-2021-39275 Référence CVE CVE-2021-40085 https://www.cve.org/CVERecord?id=CVE-2021-40085 Référence CVE CVE-2021-4028 https://www.cve.org/CVERecord?id=CVE-2021-4028 Référence CVE CVE-2021-4034 https://www.cve.org/CVERecord?id=CVE-2021-4034 Référence CVE CVE-2021-40438 https://www.cve.org/CVERecord?id=CVE-2021-40438 Référence CVE CVE-2021-4083 https://www.cve.org/CVERecord?id=CVE-2021-4083 Référence CVE CVE-2021-4155 https://www.cve.org/CVERecord?id=CVE-2021-4155 Référence CVE CVE-2021-42574 https://www.cve.org/CVERecord?id=CVE-2021-42574 Référence CVE CVE-2021-42739 https://www.cve.org/CVERecord?id=CVE-2021-42739 Référence CVE CVE-2021-44790 https://www.cve.org/CVERecord?id=CVE-2021-44790 Référence CVE CVE-2021-45960 https://www.cve.org/CVERecord?id=CVE-2021-45960 Référence CVE CVE-2021-46143 https://www.cve.org/CVERecord?id=CVE-2

Official advisory
CERT-FR · French · CERTFR-2022-AVI-916Multiples vulnérabilités dans les produits Juniper

.org/CVERecord?id=CVE-2021-3653 Référence CVE CVE-2021-3656 https://www.cve.org/CVERecord?id=CVE-2021-3656 Référence CVE CVE-2021-3711 https://www.cve.org/CVERecord?id=CVE-2021-3711 Référence CVE CVE-2021-3712 https://www.cve.org/CVERecord?id=CVE-2021-3712 Référence CVE CVE-2021-3715 https://www.cve.org/CVERecord?id=CVE-2021-3715 Référence CVE CVE-2021-3752 https://www.cve.org/CVERecord?id=CVE-2021-3752 Référence CVE CVE-2021-37576 https://www.cve.org/CVERecord?id=CVE-2021-37576 Référence CVE CVE-2021-3765 https://www.cve.org/CVERecord?id=CVE-2021-3765 Référence CVE CVE-2021-37750 https://www.cve.org/CVERecord?id=CVE-2021-37750 Référence CVE CVE-2021-4034 https://www.cve.org/CVERecord?id=CVE-2021-4034 Référence CVE CVE-2021-4155 https://www.cve.org/CVERecord?id=CVE-2021-4155 Référence CVE CVE-2021-4160 https://www.cve.org/CVERecord?id=CVE-2021-4160 Référence CVE CVE-2021-41617 https://www.cve.org/CVERecord?id=CVE-2021-41617 Référence CVE CVE-2021-42550 https://www.cve.org/CVERecord?id=CVE-2021-42550 Référence CVE CVE-2021-42574 https://www.cve.org/CVERecord?id=CVE-2021-42574 Référence CVE CVE-2021-42771 https://www.cve.org/CVERecord?id=CVE-2021-42771 Référence CVE CVE-2021-43527 https://www.cve.org/CVERecord?id=CVE-2021-43527 Référence CVE CVE-2021-45417 https://www.cve.org/CVERecord?id=CVE-2

Official advisory
CERT-FR · French · CERTFR-2022-AVI-547Multiples vulnérabilités dans les produits Siemens

d?id=CVE-2021-22925 Référence CVE CVE-2021-33196 https://www.cve.org/CVERecord?id=CVE-2021-33196 Référence CVE CVE-2021-33910 https://www.cve.org/CVERecord?id=CVE-2021-33910 Référence CVE CVE-2021-34798 https://www.cve.org/CVERecord?id=CVE-2021-34798 Référence CVE CVE-2021-36221 https://www.cve.org/CVERecord?id=CVE-2021-36221 Référence CVE CVE-2021-37182 https://www.cve.org/CVERecord?id=CVE-2021-37182 Référence CVE CVE-2021-37209 https://www.cve.org/CVERecord?id=CVE-2021-37209 Référence CVE CVE-2021-39275 https://www.cve.org/CVERecord?id=CVE-2021-39275 Référence CVE CVE-2021-39293 https://www.cve.org/CVERecord?id=CVE-2021-39293 Référence CVE CVE-2021-4034 https://www.cve.org/CVERecord?id=CVE-2021-4034 Référence CVE CVE-2021-40438 https://www.cve.org/CVERecord?id=CVE-2021-40438 Référence CVE CVE-2021-41089 https://www.cve.org/CVERecord?id=CVE-2021-41089 Référence CVE CVE-2021-41091 https://www.cve.org/CVERecord?id=CVE-2021-41091 Référence CVE CVE-2021-41092 https://www.cve.org/CVERecord?id=CVE-2021-41092 Référence CVE CVE-2021-41103 https://www.cve.org/CVERecord?id=CVE-2021-41103 Référence CVE CVE-2021-45960 https://www.cve.org/CVERecord?id=CVE-2021-45960 Référence CVE CVE-2021-46143 https://www.cve.org/CVERecord?id=CVE-2021-46143 Référence CVE CVE-2022-0778 https://www.cve.org/CVERecord?id=CV

Official advisory
CERT-FR · French · CERTFR-2022-AVI-351Multiples vulnérabilités dans les logiciels Juniper

ité Juniper JSA69500 du 13 avril 2022 https://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Paragon-Active-Assurance-Control-Center-Information-disclosure-vulnerability-in-crafted-URL-CVE-2022-22190?language=en_US Bulletin de sécurité Juniper JSA69504 du 13 avril 2022 https://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Juniper-Secure-Analytics-JSA-Series-Heap-Based-Buffer-Overflow-in-Sudo-CVE-2021-3156?language=en_US Bulletin de sécurité Juniper JSA69506 du 13 avril 2022 https://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Paragon-Active-Assurance-Local-Privilege-Escalation-in-polkits-pkexec-CVE-2021-4034?language=en_US Bulletin de sécurité Juniper JSA69507 du 13 avril 2022 https://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Contrail-Networking-Multiple-vulnerabilities-resolved-in-Contrail-Networking-21-3-CVE-yyyy-nnnn?language=en_US Bulletin de sécurité Juniper JSA69510 du 13 avril 2022 https://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Contrail-Networking-Multiple-Vulnerabilities-have-been-resolved-in-Contrail-Networking-release-2011-L4?language=en_US Référence CVE CVE-2014-9471 https://www.cve.org/CVERecord?id=CVE-2014-9471 Référence CVE CVE-2015-8315 https://www.cve.org/CVERecord?id=CVE-2015-8315 Référ

Official advisory
CERT-FR · French · CERTFR-2022-AVI-239Multiples vulnérabilités dans les produits IBM

ord?id=CVE-2021-33026 Référence CVE CVE-2021-35517 https://www.cve.org/CVERecord?id=CVE-2021-35517 Référence CVE CVE-2021-35578 https://www.cve.org/CVERecord?id=CVE-2021-35578 Référence CVE CVE-2021-36090 https://www.cve.org/CVERecord?id=CVE-2021-36090 Référence CVE CVE-2021-3712 https://www.cve.org/CVERecord?id=CVE-2021-3712 Référence CVE CVE-2021-38926 https://www.cve.org/CVERecord?id=CVE-2021-38926 Référence CVE CVE-2021-38931 https://www.cve.org/CVERecord?id=CVE-2021-38931 Référence CVE CVE-2021-38951 https://www.cve.org/CVERecord?id=CVE-2021-38951 Référence CVE CVE-2021-39002 https://www.cve.org/CVERecord?id=CVE-2021-39002 Référence CVE CVE-2021-4034 https://www.cve.org/CVERecord?id=CVE-2021-4034 Référence CVE CVE-2021-41182 https://www.cve.org/CVERecord?id=CVE-2021-41182 Référence CVE CVE-2021-41183 https://www.cve.org/CVERecord?id=CVE-2021-41183 Référence CVE CVE-2021-41184 https://www.cve.org/CVERecord?id=CVE-2021-41184 Référence CVE CVE-2021-41617 https://www.cve.org/CVERecord?id=CVE-2021-41617 Référence CVE CVE-2021-44716 https://www.cve.org/CVERecord?id=CVE-2021-44716 Référence CVE CVE-2021-44717 https://www.cve.org/CVERecord?id=CVE-2021-44717 Référence CVE CVE-2022-0235 https://www.cve.org/CVERecord?id=CVE-2022-0235 Référence CVE CVE-2022-0391 https://www.cve.org/CVERecord?id=CVE-

Official advisory
CERT-FR · French · CERTFR-2022-AVI-223Vulnérabilité dans les produits Moxa

Une vulnérabilité a été découverte dans les produits Moxa. Elle permet à un attaquant de provoquer une élévation de privilèges.

Official advisory
CERT-FR · French · CERTFR-2022-AVI-086Vulnérabilité dans pkexec de PolicyKit sur SUSE

Une vulnérabilité a été découverte dans pkexec de PolicyKit sur SUSE. Elle permet à un attaquant de provoquer une élévation de privilèges.

Official advisory
CERT-FR · French · CERTFR-2022-AVI-085Vulnérabilité dans pkexec de PolicyKit sur Debian

Une vulnérabilité a été découverte dans pkexec de PolicyKit sur Debian. Elle permet à un attaquant de provoquer une élévation de privilèges.

Official advisory
CERT-FR · French · CERTFR-2022-AVI-083Vulnérabilité dans pkexec de PolicyKit sur Ubuntu

Une vulnérabilité a été découverte dans pkexec de PolicyKit sur Ubuntu. Elle permet à un attaquant de provoquer une élévation de privilèges.

Official advisory
CERT-FR · French · CERTFR-2022-AVI-084Vulnérabilité dans pkexec de PolicyKit sur Red Hat

Une vulnérabilité a été découverte dans pkexec de PolicyKit sur Red Hat. Elle permet à un attaquant de provoquer une élévation de privilèges.

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2); RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2); SCALANCE M804PB (6GK5804-0AP00-2AA2); SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2); SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2); SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2); SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2); SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2); SCALANCE M874-2 (6GK5874-2AA00-2AA2); SCALANCE M874-3 (6GK5874-3AA00-2AA2); SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2); SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2); SCALANCE M876-4 (6GK5876-4AA10-2BA2); SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2); SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2); SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1); SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1); SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1); SCALANCE S615 (6GK5615-0AA00-2AA2); SCALANCE S615 EEC (6GK5615-0AA01-2AA2)
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Update to V7.2 or later version
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 28 Jan 2022 · Last source change 15 Aug 2026, 03:55 UTC · CWE-787 · Out-of-bounds Write

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2021-33934
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →
  1. Vendor guidanceAuthoritative vendor guidance changed from authoritative remediation link to authoritative remediation link.
    Before
    authoritative remediation link
    After
    authoritative remediation link
    SICK PSIRT ↗
  2. CISA KEV stateCISA KEV now confirms exploitation in the wild.
    Before
    listed in CISA KEV since 2022-06-27
    After
    listed in CISA KEV since 2022-06-27
    CISA KEV ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2021-33934↗Vendor CSAF · Siemens ProductCERT↗CISA KEV record↗CVE authority or vendor reference↗Public exploit reference↗Patch or update reference↗Patch or update reference↗Public exploit reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2021-4034 · cve.blacktree.nl