CVE-2020-25637

A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, 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.

CVSS v3.1

6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.53% chance of exploitation in the next 30 days, 43th percentile

Published

2020-10-06

Updated

2024-08-04

Proof-of-concept exploits (1)

• brahmiboudjema/CVE-2020-25637-libvirt-double-free0★ · 2020-12-11

References

• CVE Record
• NVD entry

Related

• CVE-2020-25627
• CVE-2020-25656
• CVE-2020-25613
• CVE-2020-25663
• CVE-2020-25592
• CVE-2020-25668