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.

• CWE-863
• CWE-754

• https://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.htmlThird Party Advisory, VDB Entry
• https://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.htmlThird Party Advisory, VDB Entry
• https://bugzilla.redhat.com/show_bug.cgi?id=1961710Issue Tracking, Patch, Vendor Advisory
• https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/Exploit, Third Party Advisory
• https://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.htmlThird Party Advisory, VDB Entry
• https://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.htmlThird Party Advisory, VDB Entry
• https://bugzilla.redhat.com/show_bug.cgi?id=1961710Issue Tracking, Patch, Vendor Advisory
• https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/Exploit, Third Party Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560US Government Resource

Published

Feb 16, 2022

Last Modified

Jun 17, 2026

Status

Analyzed

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