CVE-2018-6764 : util/virlog.c in libvirt does not properly determine the hostname on LXC contain

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.

Published 2018-02-23 17:29:00

Updated 2019-10-03 00:03:26

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2018-6764

Debian » Debian Linux » Version: 8.0
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Desktop » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
Matching versions
Redhat » Libvirt » Version: N/A
cpe:2.3:a:redhat:libvirt:-:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Server » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Workstation » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
Matching versions
Redhat » Virtualization » Version: 4.0
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 14.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 16.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 17.10
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2018-6764

EPSS FAQ

0.06%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 23 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-6764

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.6	MEDIUM	AV:L/AC:L/Au:N/C:P/I:P/A:P	3.9	6.4	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
7.8	HIGH	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2018-6764

CWE-346 Origin Validation Error

The product does not properly verify that the source of data or communication is valid.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-6764

https://access.redhat.com/errata/RHSA-2018:3113

RHSA-2018:3113 - Security Advisory - Red Hat Customer Portal
Third Party Advisory
https://www.debian.org/security/2018/dsa-4137

Debian -- Security Information -- DSA-4137-1 libvirt
Third Party Advisory

CVEs referencing this url
http://www.ubuntu.com/usn/USN-3576-1

USN-3576-1: libvirt vulnerabilities | Ubuntu security notices
Third Party Advisory
https://www.redhat.com/archives/libvir-list/2018-February/msg00239.html

[libvirt] [PATCH] virlog: determine the hostname on startup CVE-2018-XXX
Patch;Third Party Advisory

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Vulnerability Details : CVE-2018-6764

Products affected by CVE-2018-6764

Exploit prediction scoring system (EPSS) score for CVE-2018-6764

CVSS scores for CVE-2018-6764

CWE ids for CVE-2018-6764

References for CVE-2018-6764