CVE-2021-4115
polkit: file descriptor leak allows an unprivileged user to cause a crash
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
2Exploited in Wild
-Decision
Descriptions
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
Se presenta un fallo en polkit que puede permitir a un usuario no privilegiado causar un bloqueo de polkit, debido al agotamiento del descriptor de archivos del proceso. La mayor amenaza de esta vulnerabilidad es la disponibilidad. NOTA: La duración de la interrupción del proceso de polkit está ligada al proceso que falla y a la creación de uno nuevo
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.
Red Hat Advanced Cluster Management for Kubernetes 2.3.10 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs. Issues addressed include bypass and traversal vulnerabilities.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-12-14 CVE Reserved
- 2022-02-21 CVE Published
- 2023-06-12 First Exploit
- 2024-08-03 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-400: Uncontrolled Resource Consumption
- CWE-403: Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak')
CAPEC
References (9)
URL | Tag | Source |
---|---|---|
http://packetstormsecurity.com/files/172849/polkit-File-Descriptor-Exhaustion.html |
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https://access.redhat.com/security/cve/cve-2021-4115 | Third Party Advisory |
URL | Date | SRC |
---|---|---|
https://packetstorm.news/files/id/172849 | 2023-06-12 | |
https://gitlab.freedesktop.org/polkit/polkit/-/issues/141 | 2024-08-03 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Polkit Project Search vendor "Polkit Project" | Polkit Search vendor "Polkit Project" for product "Polkit" | 0.117 Search vendor "Polkit Project" for product "Polkit" and version "0.117" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 35 Search vendor "Fedoraproject" for product "Fedora" and version "35" | - |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 21.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "21.10" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
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Oracle Search vendor "Oracle" | Zfs Storage Appliance Kit Search vendor "Oracle" for product "Zfs Storage Appliance Kit" | 8.8 Search vendor "Oracle" for product "Zfs Storage Appliance Kit" and version "8.8" | - |
Affected
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