High severity · published Feb 16, 2022
CVE-2021-3560
Red Hat Polkit Incorrect Authorization Vulnerability
In wildKEV
7.8
CVSS
23.7%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)23.7% · higher than 98% of CVEs
Exploited in the wildYes
CISA KEVListed May 12, 2023
Federal remediation dueJun 2, 2023
Ransomware campaign useNot known
Affected products
Which versions
PO
polkit ·
polkit 0.119 · source: vendor, NVD, KEV
DL
Debian Linux · Debian
11.0 · source: NVD
OC
Openshift Container Platform · Redhat
4.7 · source: NVD
UL
Ubuntu Linux · Canonical
20.04 · source: NVD
VI
Virtualization · Redhat
4.0 · source: NVD
VH
Virtualization Host · Redhat
4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3560
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3560
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1961710
github.blog
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
packetstormsecurity.com
http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html
packetstormsecurity.com
http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html
More from polkit
7.8
CVE-2021-4034
Red Hat Polkit Out-of-Bounds Read and Write Vulnerability