CVE-2018-1049 Race condition in systemd
Medium 5.9
Published
Updated
Check this codebase for CVE-2018-1049 and fix it if it is affected.
What it is: CVE-2018-1049 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 16 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-1049 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-2018-1049/ (Markdown: https://insights.sbomify.com/CVE-2018-1049/index.md)
A race condition in systemd automount units can cause processes to hang, leading to a denial of service until mount points are unmounted.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-1049?
CVE-2018-1049 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 16 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In systemd prior to 234 a race condition exists between .mount and .automount units such that automount requests from kernel may not be serviced by systemd resulting in kernel holding the mountpoint and any processes that try to use said mount will hang. A race condition like this may lead to denial of service, until mount points are unmounted.
Weakness: CWE-362
Which versions are affected by CVE-2018-1049?
It affects 11 products.
Linux distribution packages (40)
libgudev1 Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
libgudev1-devel Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd-devel Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd-journal-gateway Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd-libs Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd-networkd Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd-python Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd-resolved Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
systemd-sysv Red Hat:enterprise_linux:7::client | All versions | 0:219-42.el7_4.7 |
libgudev1 Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
libgudev1-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd-journal-gateway Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd-libs Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd-networkd Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd-python Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd-resolved Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
systemd-sysv Red Hat:enterprise_linux:7::computenode | All versions | 0:219-42.el7_4.7 |
libgudev1 Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
libgudev1-devel Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd-devel Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd-journal-gateway Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd-libs Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd-networkd Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd-python Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd-resolved Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
systemd-sysv Red Hat:enterprise_linux:7::server | All versions | 0:219-42.el7_4.7 |
libgudev1 Red Hat:enterprise_linux:7::workstation | All versions | 0:219-42.el7_4.7 |
libgudev1-devel Red Hat:enterprise_linux:7::workstation | All versions | 0:219-42.el7_4.7 |
systemd Red Hat:enterprise_linux:7::workstation | All versions | 0:219-42.el7_4.7 |
systemd-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 0:219-42.el7_4.7 |
systemd-devel Red Hat:enterprise_linux:7::workstation | All versions | 0:219-42.el7_4.7 |
systemd-journal-gateway Red Hat:enterprise_linux:7::workstation | All versions | 0:219-42.el7_4.7 |
systemd-libs Red Hat:enterprise_linux:7::workstation | All versions | 0:219-42.el7_4.7 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Redhat Enterprise Linux, Redhat Enterprise Linux Aus, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server and 5 more.
How do I fix CVE-2018-1049?
Upgrade to a fixed version.
Is CVE-2018-1049 being exploited?
There is no known exploitation of CVE-2018-1049 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-1049, GHSA-4pg2-ppcx-jh29, MGASA-2018-0094, RHSA-2018:0260, UBUNTU-CVE-2018-1049.