Medium severity · published Mar 25, 2022
CVE-2021-4147
A flaw was found in the libvirt libxl driver
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, resulting in a denial of service condition.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
35 · source: NVD
LI
Libvirt · Redhat
before 2.33.0 · source: NVD
OS
Ontap Select Deploy Administration Utility · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4147
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-4147
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2034195
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220513-0004/
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