Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Polkit Project | Polkit | < 0.119 |
| Debian | Debian Linux | 11.0 |
| Canonical | Ubuntu Linux | 20.04 |
| Redhat | Virtualization | 4.0 |
| Redhat | Virtualization Host | 4.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Openshift Container Platform | 4.7 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.htmlThird Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.htmlThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1961710Issue TrackingPatchVendor Advisory
- https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-buExploitThird Party Advisory
- http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.htmlThird Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.htmlThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1961710Issue TrackingPatchVendor Advisory
- https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-buExploitThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-US Government Resource
FAQ
What is CVE-2021-3560?
CVE-2021-3560 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 unprivilege...
How severe is CVE-2021-3560?
CVE-2021-3560 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3560?
Check the references section above for vendor advisories and patch information. Affected products include: Polkit Project Polkit, Debian Debian Linux, Canonical Ubuntu Linux, Redhat Virtualization, Redhat Virtualization Host.