Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

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, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Published

2022-02-16T19:15:08.450

Last Modified

2025-04-03T16:08:28.520

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Secondary
CWE-863
Type: Primary
CWE-754

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	polkit_project	polkit	< 0.119	Yes
Operating System	debian	debian_linux	11.0	Yes
Operating System	canonical	ubuntu_linux	20.04	Yes
Application	redhat	virtualization	4.0	Yes
Application	redhat	virtualization_host	4.0	Yes
Operating System	redhat	enterprise_linux	8.0	No
Application	redhat	openshift_container_platform	4.7	Yes
Operating System	redhat	enterprise_linux	7.0	No
Operating System	redhat	enterprise_linux	8.0	No

References

http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html Third Party Advisory, VDB Entry ([email protected])
http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html Third Party Advisory, VDB Entry ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1961710 Issue Tracking, Patch, Vendor Advisory ([email protected])
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/ Exploit, Third Party Advisory ([email protected])
http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1961710 Issue Tracking, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)