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CVE-2021-4115

Published: Feb 21, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-400
NVD MITRE
5.5CVSSMEDIUM
EPSS Score
0.5%
Top 59.8%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-400NVD-CWE-Other

Affected Products

polkitpolkit project
Mixed
Operating Systems / linux-distro
enterprise linuxredhat
On-premOS
Operating Systems / linux-distro
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
polkit projectoss-projectOperating Systemsaka polkit, polkit project (ambiguous spelling)
redhatcommercialUSOperating Systemsaka red hat
fedoraprojectoss-projectUSOperating Systemsaka fedora project
canonicalcommercialGBOperating Systemsaka canonical ltd.
debianoss-projectGBOperating Systemsaka debian gnu/linux
and 5 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

http://packetstormsecurity.com/files/172849/polkit-File-Descriptor-Exhaustion.html
packetstormsecurity.com
https://access.redhat.com/security/cve/cve-2021-4115
access.redhat.com
https://gitlab.com/redhat/centos-stream/rpms/polkit/-/merge_requests/6/diffs?commit_id=bf900df04dc390d389e59aa10942b0f2b15c531e
gitlab.com
and 6 more references View all →

Timeline

Published
Feb 21, 2022
Last Updated
Nov 21, 2024

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