Double Free Affecting libvirt-admin package, versions <0:5.7.0-21.el7


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-ORACLE7-LIBVIRTADMIN-2574805
  • published10 Apr 2022
  • disclosed6 Oct 2020

Introduced: 6 Oct 2020

CVE-2020-25637  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade Oracle:7 libvirt-admin to version 0:5.7.0-21.el7 or higher.
This issue was patched in ELSA-2020-5961.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt-admin package and not the libvirt-admin package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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 Scores

version 3.1