CVE-2021-3560
- State
- Published
- Severity
- 7.8 High
- Published
- Feb 16, 2022
- Updated
- Oct 21, 2025
- Reserved
- May 20, 2021
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
polkitn/a |
|
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1961710
- https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
- http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html
- http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560government-resource
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