CVE-2018-6764

libvirt: guest could inject executable code via libnss_dns.so loaded by libvirt_lxc before init

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Severity

Moderate

Red Hat Product Security

CVSS 3.0

Review impact separately from score.

Published · February 5, 2018

Updated · January 14, 2026

Description

util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L

CWE-179 · Incorrect Behavior Order: Early Validation