CVE-2021-3560

Red Hat Polkit Incorrect Authorization Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

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.

Se ha detectado que polkit podía ser engañado para omitir las comprobaciones de credenciales para las peticiones de D-Bus, elevando los privilegios del solicitante al usuario root. Este fallo podría ser usado por un atacante local no privilegiado para, por ejemplo, crear un nuevo administrador local. La mayor amenaza de esta vulnerabilidad es para la confidencialidad e integridad de los datos, así como para la disponibilidad del sistema

Polkit version Polkit 0.105-26 0.117-2 suffers from a local privilege escalation vulnerability.

Red Hat Polkit contains an incorrect authorization vulnerability through the bypassing of credential checks for D-Bus requests, allowing for privilege escalation.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-20 CVE Reserved
2021-06-03 CVE Published
2021-06-03 First Exploit
2023-05-12 Exploited in Wild
2023-06-02 KEV Due Date
2023-06-12 EPSS Updated
2024-08-03 CVE Updated

CWE

CWE-754: Improper Check for Unusual or Exceptional Conditions
CWE-863: Incorrect Authorization

CAPEC

References (28)

URL	Tag	Source
http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html	Third Party Advisory
http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html	Third Party Advisory

URL	Date	SRC
https://www.exploit-db.com/exploits/50011	2021-06-15
https://github.com/secnigma/CVE-2021-3560-Polkit-Privilege-Esclation	2022-11-16
https://github.com/RicterZ/CVE-2021-3560-Authentication-Agent	2022-05-02
https://github.com/hakivvi/CVE-2021-3560	2021-06-23
https://github.com/WinMin/CVE-2021-3560	2022-05-02
https://github.com/0dayNinja/CVE-2021-3560	2021-07-30
https://github.com/AssassinUKG/Polkit-CVE-2021-3560	2021-06-29
https://github.com/chenaotian/CVE-2021-3560	2022-05-23
https://github.com/BizarreLove/CVE-2021-3560	2021-07-29
https://github.com/cpu0x00/CVE-2021-3560	2021-08-05
https://github.com/UNICORDev/exploit-CVE-2021-3560	2022-06-26
https://github.com/NeonWhiteRabbit/CVE-2021-3560	2022-02-02
https://github.com/f4T1H21/CVE-2021-3560-Polkit-DBus	2022-02-13
https://github.com/Kyyomaa/CVE-2021-3560-EXPLOIT	2024-04-23
https://github.com/TieuLong21Prosper/CVE-2021-3560	2023-10-10
https://github.com/curtishoughton/CVE-2021-3560	2021-06-14
https://github.com/TomMalvoRiddle/CVE-2021-3560	2021-07-26
https://github.com/innxrmxst/CVE-2021-3560	2022-02-25
https://github.com/asepsaepdin/CVE-2021-3560	2023-09-05
https://github.com/LucasPDiniz/CVE-2021-3560	2024-06-30
https://github.com/pashayogi/ROOT-CVE-2021-3560	2023-08-20
https://github.com/markyu0401/CVE-2021-3560-Polkit-Privilege-Escalation	2024-02-24
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug	2024-08-03
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/local/polkit_dbus_auth_bypass.rb	2021-06-03

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1961710	2021-07-06

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2021-3560	2021-07-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"	Virtualization Search vendor "Redhat" for product "Virtualization"	4.0 Search vendor "Redhat" for product "Virtualization" and version "4.0"	-	Affected	in	Redhat Search vendor "Redhat"	Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"	8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"	-	Safe
Redhat Search vendor "Redhat"	Virtualization Host Search vendor "Redhat" for product "Virtualization Host"	4.0 Search vendor "Redhat" for product "Virtualization Host" and version "4.0"	-	Affected	in	Redhat Search vendor "Redhat"	Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"	8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"	-	Safe
Redhat Search vendor "Redhat"	Openshift Container Platform Search vendor "Redhat" for product "Openshift Container Platform"	4.7 Search vendor "Redhat" for product "Openshift Container Platform" and version "4.7"	-	Affected	in	Redhat Search vendor "Redhat"	Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"	7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"	-	Safe
Redhat Search vendor "Redhat"	Openshift Container Platform Search vendor "Redhat" for product "Openshift Container Platform"	4.7 Search vendor "Redhat" for product "Openshift Container Platform" and version "4.7"	-	Affected	in	Redhat Search vendor "Redhat"	Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"	8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"	-	Safe
Polkit Project Search vendor "Polkit Project"		Polkit Search vendor "Polkit Project" for product "Polkit"				< 0.119 Search vendor "Polkit Project" for product "Polkit" and version " < 0.119"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04"		-		Affected