What is CVE-2021-3560?

CVE-2021-3560 is a high-severity vulnerability in Polkit_project Polkit, classified under Incorrect Authorization. CVSS score: 7.8/10. Published 2022-02-16.

How severe is CVE-2021-3560?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2021-3560 known to be exploited?

Yes. CVE-2021-3560 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-05-12), indicating it is being actively exploited. 230 public proof-of-concept repositories are indexed.

Auth bypass in Polkit_project Polkit

CVE-2021-3560

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, creat…

Vulnerability class: Broken Access Control

EPSS: 0.222 (97.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Polkit_project Polkit
Canonical Ubuntu_linux — versions 20.04
Debian Debian_linux — versions 11.0
Redhat Enterprise_linux — versions 8.0, 7.0
Redhat Openshift_container_platform — versions 4.7
Redhat Virtualization — versions 4.0
Redhat Virtualization_host — versions 4.0
N/a Polkit — versions polkit 0.119

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-05-12. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-06-02.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

secalert@redhat.com (Patch, Issue Tracking, Vendor Advisory)
secalert@redhat.com (Exploit, Third Party Advisory)
secalert@redhat.com (VDB Entry, Third Party Advisory)
secalert@redhat.com (VDB Entry, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2021-3560?: CVE-2021-3560 is a high-severity vulnerability in Polkit_project Polkit, classified under Incorrect Authorization. CVSS score: 7.8/10. Published 2022-02-16.
How severe is CVE-2021-3560?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-3560 known to be exploited?: Yes. CVE-2021-3560 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-05-12), indicating it is being actively exploited. 230 public proof-of-concept repositories are indexed.