CVE-2018-6764 Privilege escalation in n/a
High 7.8
Published
Updated
Check this codebase for CVE-2018-6764 and fix it if it is affected.
What it is: CVE-2018-6764 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 23 Feb 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-6764 in the wild and no public exploit code.
Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2018-6764/ (Markdown: https://insights.sbomify.com/CVE-2018-6764/index.md)
Local guest users can bypass container protections and execute arbitrary commands via a crafted NSS module in libvirt.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-6764?
CVE-2018-6764 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 23 Feb 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-346
Which versions are affected by CVE-2018-6764?
It affects 7 products.
Linux distribution packages (40)
libvirt Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-admin Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-bash-completion Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-client Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-config-network Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-config-nwfilter Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-interface Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-lxc Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-network Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-nodedev Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-nwfilter Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-qemu Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-secret Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage-core Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage-disk Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage-gluster Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage-iscsi Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage-logical Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage-mpath Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage-rbd Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-storage-scsi Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-kvm Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-lxc Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-devel Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-docs Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-libs Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-lock-sanlock Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-login-shell Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt-nss Red Hat:enterprise_linux:7::client | All versions | 0:4.5.0-10.el7 |
libvirt Red Hat:enterprise_linux:7::computenode | All versions | 0:4.5.0-10.el7 |
libvirt-admin Red Hat:enterprise_linux:7::computenode | All versions | 0:4.5.0-10.el7 |
libvirt-bash-completion Red Hat:enterprise_linux:7::computenode | All versions | 0:4.5.0-10.el7 |
libvirt-client Red Hat:enterprise_linux:7::computenode | All versions | 0:4.5.0-10.el7 |
libvirt-daemon Red Hat:enterprise_linux:7::computenode | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-config-network Red Hat:enterprise_linux:7::computenode | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-config-nwfilter Red Hat:enterprise_linux:7::computenode | All versions | 0:4.5.0-10.el7 |
libvirt-daemon-driver-interface Red Hat:enterprise_linux:7::computenode | All versions | 0:4.5.0-10.el7 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation, Redhat Libvirt and 1 more.
How do I fix CVE-2018-6764?
Apply the vendor's patch.
Is CVE-2018-6764 being exploited?
There is no known exploitation of CVE-2018-6764 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-6764, GHSA-37fp-qc5g-vpxr, RHSA-2018:3113, UBUNTU-CVE-2018-6764.