All vulnerabilities
CVE-2021-4034

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

Red Hat PolkitIdentity & access
Open in ThreatlineRecord JSON
CVSS
7.8High
ExploitationExploited in the wildAdded to KEV 27 Jun 2022. Known ransomware useCISA KEV
Exploit odds (EPSS)94.9%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline18 Jul 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 25 Jan 2022Exploit code publicMetasploit
  2. 28 Jan 2022, 00:00 UTCPublishedCVE List
  3. 27 Jun 2022Added to CISA KEVCISA KEV

Public exploit code and templates 2

  • Exploit moduleLocal Privilege Escalation in polkits pkexec 25 Jan 2022Metasploit
  • Local exploitPolicyKit-1 0.105-31 - Privilege Escalation 27 Jan 2022Exploit-DB

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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

Text from CVE List

Affected versions 1

  • polkitaffected: allCVE List

References 12