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.
- Score
- CVSS 3.1 7.8 High
- Status
- Analyzed - secalert@redhat.com
- Published
- 2022-02-16
- Last modified
- 2025-10-21
- Known exploited (CISA KEV)
- since 2023-05-12, action due 2023-06-02: Apply updates per vendor instructions.
- Weaknesses
- CWE-754, CWE-863
Affected products
- Ubuntu Linux (Canonical)
- Debian Linux (Debian)
- Polkit (Polkit Project)
- Openshift Container Platform (Redhat)
- Virtualization (Redhat)
- Virtualization Host (Redhat)
References
- http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html
- http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1961710
- https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560
