CVE-2021-3560

Publication date 3 June 2021

Last updated 25 August 2025

Ubuntu priority

High

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
policykit-1 22.04 LTS jammy
Fixed 0.105-31
21.10 impish
Fixed 0.105-31
21.04 hirsute
Fixed 0.105-30ubuntu0.1
20.10 groovy
Fixed 0.105-29ubuntu0.1
20.04 LTS focal
Fixed 0.105-26ubuntu1.1
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

Notes

mdeslaur

commit introducing issue was backported to policykit-1 version in Ubuntu in focal+

Severity score breakdown

CVSS version: CVSS v3.0

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

References

Related Ubuntu Security Notices (USN)

Other references

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