CVE-2021-4115
Last modified
CVE-2021-4115 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. EPSS estimates a 0.53% chance of exploitation in the next 30 days.
Description
There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Polkit Project | Polkit | 0.117 |
| Redhat | Enterprise Linux | 8.0 |
| Fedoraproject | Fedora | 34 |
| Fedoraproject | Fedora | 35 |
| Canonical | Ubuntu Linux | 20.04 |
| Canonical | Ubuntu Linux | 21.10 |
| Debian | Debian Linux | 11.0 |
| Oracle | Zfs Storage Appliance Kit | 8.8 |
References
- https://access.redhat.com/security/cve/cve-2021-4115Third Party Advisory
- https://gitlab.freedesktop.org/polkit/polkit/-/issues/141Exploit, Issue Tracking, Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
- https://access.redhat.com/security/cve/cve-2021-4115Third Party Advisory
- https://gitlab.freedesktop.org/polkit/polkit/-/issues/141Exploit, Issue Tracking, Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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