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Gentoo: GLSA-202101-22 High: libvirt Local Escalation Threat

gentoo
Calendar Grey January 25, 2021
Dist Gentoo Esm H88
A flaw in libvirt exposes local users to potential root privilege escalation. It is recommended to update to version 6.7.0 to address this vulnerability.
A vulnerability in libvirt may allow root privilege escalation.

Summary

A file descriptor for /dev/mapper/control was insufficiently protected.

Topics%20covered

Topics Covered

security advisory high severity gentoo access control root privileges local escalation libvirt

Resolution

All libvirt users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/libvirt-6.7.0"

References

[ 1 ] CVE-2020-14339 https://nvd.nist.gov/vuln/detail/CVE-2020-14339

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202101-22
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: libvirt: Unintended access to /dev/mapper/control
Date: January 26, 2021
Bugs: #739948
ID: 202101-22

Topics%20covered

Topics Covered

security advisory high severity gentoo access control root privileges local escalation libvirt

Synopsis

A vulnerability in libvirt may allow root privilege escalation.

Background

libvirt is a C toolkit for manipulating virtual machines.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/libvirt < 6.7.0 >= 6.7.0

Impact

===== A local attacker may be able to escalate to root privileges.

Workaround

There is no known workaround at this time.

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