Home/CVE/util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS
CVE

CVE-2018-6764

util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS

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.

HIGH · CVSS 7.8 EPSS 0.00036
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-346Origin Validation Error
▤

Affected Products & Versions

7
redhat libvirtall versions
debian linuxall versions
redhat virtualizationall versions
redhat enterprise linux desktopall versions
redhat enterprise linux serverall versions
redhat enterprise linux workstationall versions
canonical ubuntu linuxall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPowershell Detect Virtualization Environment
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Feb 2018 · 05:29 PM
CVSS VectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

4
suse-csafSUSE-SU-2018:0920-1
suse-csafSUSE-SU-2018:0861-1
usnUSN-3576-1
rhsaRHSA-2018:3113Moderate
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.ubuntu.com/usn/USN-3576-1Third Party Advisory
https://www.debian.org/security/2018/dsa-4137Third Party Advisory
https://www.redhat.com/archives/libvir-list/2018-February/msg00239.htmlPatchThird Party Advisory
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