CVE-2021-4115

Public Exploit

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

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.01%
Vendor Advisory fedoraproject.org
Affected: n/a polkitd
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/cve-2021-4115 third party advisory
https://gitlab.freedesktop.org/polkit/polkit/-/issues/141 issue tracking patch exploit third party advisory
https://gitlab.com/redhat/centos-stream/rpms/polkit/-/merge_requests/6/diffs?commit_id=bf900df04dc390d389e59aa10942b0f2b15c531e third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VGKWCBS6IDZYYDYM2WIWJM5BL7QQTWPF/ vendor advisory
https://www.oracle.com/security-alerts/cpujul2022.html third party advisory patch
http://packetstormsecurity.com/files/172849/polkit-File-Descriptor-Exhaustion.html

Frequently Asked Questions

What is the severity of CVE-2021-4115?
CVE-2021-4115 has been scored as a medium severity vulnerability.
How to fix CVE-2021-4115?
To fix CVE-2021-4115, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4115 being actively exploited in the wild?
It is possible that CVE-2021-4115 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4115?
CVE-2021-4115 affects n/a polkitd.
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