Is CVE-2018-6764 in the CISA KEV catalog?

No. CVE-2018-6764 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-6764?

CVE-2018-6764 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2018-6764?

CVE-2018-6764 has an EPSS score of 0.33% (25th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-6764?

Upgrade libvirt on debian 11 to 4.0.0-2 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2018-6764

HIGH

7.8

CVSS v3

NVD

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.

CWE-346

How to fix

Remediation Available

libvirtDebian

Fixed in:4.0.0-2CVE-2018-6764

libvirtUbuntu

Fixed in:1.2.2-0ubuntu13.1.26USN-3576-1

Fixed in:1.3.1-1ubuntu10.19USN-3576-1

libvirt-binUbuntu

Fixed in:1.2.2-0ubuntu13.1.26USN-3576-1

Fixed in:1.3.1-1ubuntu10.19USN-3576-1

libvirt0Ubuntu

Fixed in:1.2.2-0ubuntu13.1.26USN-3576-1

Fixed in:1.3.1-1ubuntu10.19USN-3576-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.33%probability of exploitation in 30 days

25thpercentile

Low risk: more likely to be exploited than 25% of all known CVEs.

References

Patch1

redhat.com

Third-Party Advisory3

Related Vulnerabilities

Other CWE-346 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-1185	High	7.2	82%	-	Fix
CVE-2025-34291	High	8.8	79%	KEV	-
CVE-2020-16952	High	8.6	71%	-	-
CVE-2023-29711	Critical	9.8	70%	-	-
CVE-2015-4495	High	8.8	70%	KEV	Fix
CVE-2024-23898	High	8.8	67%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.