Vulnerability Details 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. 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
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.4%
CVSS Severity
CVSS v3 Score 5.5
CVSS v2 Score 2.1
References
- http://packetstormsecurity.com/files/172849/polkit-File-Descriptor-Exhaustion.html
- https://access.redhat.com/security/cve/cve-2021-4115
- https://gitlab.com/redhat/centos-stream/rpms/polkit/-/merge_requests/6/diffs?commit_id=bf900df04dc390d389e59aa10942b0f2b15c531e
- https://gitlab.freedesktop.org/polkit/polkit/-/issues/141
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VGKWCBS6IDZYYDYM2WIWJM5BL7QQTWPF/
- https://www.oracle.com/security-alerts/cpujul2022.html
- http://packetstormsecurity.com/files/172849/polkit-File-Descriptor-Exhaustion.html
- https://access.redhat.com/security/cve/cve-2021-4115
- https://gitlab.com/redhat/centos-stream/rpms/polkit/-/merge_requests/6/diffs?commit_id=bf900df04dc390d389e59aa10942b0f2b15c531e
- https://gitlab.freedesktop.org/polkit/polkit/-/issues/141
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VGKWCBS6IDZYYDYM2WIWJM5BL7QQTWPF/
- https://www.oracle.com/security-alerts/cpujul2022.html
Products affected by CVE-2021-4115
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cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8
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cpe:2.3:a:polkit_project:polkit:0.117
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cpe:2.3:o:canonical:ubuntu_linux:20.04
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cpe:2.3:o:canonical:ubuntu_linux:21.10
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cpe:2.3:o:debian:debian_linux:11.0
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cpe:2.3:o:fedoraproject:fedora:34
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cpe:2.3:o:fedoraproject:fedora:35
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cpe:2.3:o:redhat:enterprise_linux:8.0