CVE-2021-4115 — Uncontrolled Resource Consumption in Project Polkit

CWE-400 — Uncontrolled Resource ConsumptionCWE-403 — File Descriptor Leak7 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 71.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
Canonical Ubuntu LinuxDebian LinuxFedoraproject Fedora+3 more
Timeline
PublishedFeb 21
Latest updateFeb 28

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

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages2 packages

Also affects: Debian Linux 11.0, Fedora 34, 35, Ubuntu Linux 20.04, 21.10, Enterprise Linux 8.0

Patches

Patch: gitlab.com ↗Patch: gitlab.freedesktop.org ↗Patch: www.oracle.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-vvr6-r92h-x7jw: There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion↗2022-02-22
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OSV
CVE-2021-4115: There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion↗2022-02-21
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CVEList
CVE-2021-4115: There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion↗2022-02-21
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📋Vendor Advisories

3
Ubuntu
PolicyKit vulnerability↗2022-02-28
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Red Hat
polkit: file descriptor leak allows an unprivileged user to cause a crash↗2022-02-14
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Debian
CVE-2021-4115: policykit-1 - There is a flaw in polkit which can allow an unprivileged user to cause polkit t...↗2021
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CVE-2021-4115 — Uncontrolled Resource Consumption | cvebase