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CVE-2020-25637

Public on 2020-10-06
Modified on 2020-12-08
Description

A double free memory issue was found to occur in the libvirt API responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Severity
Medium
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CVSS v3 Base Score
6.4
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core libvirt 2020-12-08 21:30 ALAS2-2020-1569

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C
NVD CVSSv3 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Red Hat: CVE-2020-25637 Mitre: CVE-2020-25637 FAQs regarding Amazon Linux ALAS/CVE Severity