Vulnerability Details : CVE-2021-3559

A flaw was found in libvirt in the virConnectListAllNodeDevices API in versions before 7.0.0. It only affects hosts with a PCI device and driver that supports mediated devices (e.g., GRID driver). This flaw could be used by an unprivileged client with a read-only connection to crash the libvirt daemon by executing the 'nodedev-list' virsh command. The highest threat from this vulnerability is to system availability.
Published 2021-05-24 12:15:08
Updated 2022-04-26 16:25:23
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Overflow

Exploit prediction scoring system (EPSS) score for CVE-2021-3559

EPSS FAQ
0.07%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 28 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-3559

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.0
 MEDIUM AV:N/AC:L/Au:S/C:N/I:N/A:P
8.0
2.9
 NIST
6.5
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
 NIST

CWE ids for CVE-2021-3559

  • The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
    Assigned by: secalert@redhat.com (Primary)

References for CVE-2021-3559

Products affected by CVE-2021-3559

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