# 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.

- Page: https://www.vulneraibility.com/cve/CVE-2021-3560
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2023-05-12; CISA due date 2023-06-02
- EPSS: 21.77% (percentile 97.7)
- Public exploit code: 1 on Exploit-DB · 1 Metasploit module · 33 GitHub proofs of concept (first 2021-06-11)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-01-29)
- Weakness: CWE-863
- Published: 2022-02-16

## Affected versions

- polkit: affected polkit 0.119

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://bugzilla.redhat.com/show_bug.cgi?id=1961710
- [other] https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
- [other] http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html
- [other] http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.