CVE-2021-3560

7.8 HIGH CISA KEV - Actively Exploited
Published: February 16, 2022 Modified: November 06, 2025
View on NVD

Description

It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html
Source: secalert@redhat.com
Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html
Source: secalert@redhat.com
Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1961710
Source: secalert@redhat.com
Issue Tracking Patch Vendor Advisory
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
Source: secalert@redhat.com
Exploit Third Party Advisory
http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1961710
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Vendor Advisory
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

9 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.8 / 10.0
EPSS (Exploit Probability)
7.8%
92th percentile
Exploitation Status
Actively Exploited
Remediation due: 2023-06-02

Weaknesses (CWE)

CWE-863 CWE-754

Affected Vendors

debian redhat canonical polkit_project

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