CVE-2018-15688 Out-of-Bounds write in systemd-networkd dhcpv6 option handling
High 8.8
Published
Updated
Check this codebase for CVE-2018-15688 and fix it if it is affected.
What it is: CVE-2018-15688 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 26 Oct 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-2018-15688 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-2018-15688/ (Markdown: https://insights.sbomify.com/CVE-2018-15688/index.md)
A malicious DHCPv6 server can trigger a buffer overflow in systemd-networkd, potentially allowing remote code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-15688?
CVE-2018-15688 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 26 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A buffer overflow vulnerability in the dhcp6 client of systemd allows a malicious dhcp6 server to overwrite heap memory in systemd-networkd. Affected releases are systemd: versions up to and including 239.
Weakness: CWE-120
Which versions are affected by CVE-2018-15688?
It affects 9 products.
Linux distribution packages (40)
NetworkManager Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-adsl Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-bluetooth Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-config-server Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-debuginfo Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-dispatcher-routing-rules Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-glib Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-glib-devel Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-libnm Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-libnm-devel Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-ovs Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-ppp Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-team Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-tui Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-wifi Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-wwan Red Hat:enterprise_linux:7::client | All versions | 1:1.12.0-8.el7_6 |
NetworkManager Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-adsl Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-bluetooth Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-config-server Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-dispatcher-routing-rules Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-glib Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-glib-devel Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-libnm Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-libnm-devel Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-ovs Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-ppp Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-team Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-tui Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-wifi Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-wwan Red Hat:enterprise_linux:7::computenode | All versions | 1:1.12.0-8.el7_6 |
NetworkManager Red Hat:enterprise_linux:7::server | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-adsl Red Hat:enterprise_linux:7::server | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-bluetooth Red Hat:enterprise_linux:7::server | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-config-server Red Hat:enterprise_linux:7::server | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-debuginfo Red Hat:enterprise_linux:7::server | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-dispatcher-routing-rules Red Hat:enterprise_linux:7::server | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-glib Red Hat:enterprise_linux:7::server | All versions | 1:1.12.0-8.el7_6 |
NetworkManager-glib-devel Red Hat:enterprise_linux:7::server | All versions | 1:1.12.0-8.el7_6 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus and 3 more.
How do I fix CVE-2018-15688?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-15688 being exploited?
There is no known exploitation of CVE-2018-15688 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-15688, GHSA-8h24-cwhj-2xgm, RHSA-2018:3665, UBUNTU-CVE-2018-15688, USN-3806-1, USN-3807-1.