CVE-2018-20815 Memory corruption in n/a
Critical 9.8
Published
Updated
Check this codebase for CVE-2018-20815 and fix it if it is affected.
What it is: CVE-2018-20815 is a critical memory corruption vulnerability in Qemu Qemu, published on 31 May 2019. 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-2018-20815 in the wild and no public exploit code.
Affected product: Qemu Qemu. 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-2018-20815/ (Markdown: https://insights.sbomify.com/CVE-2018-20815/index.md)
A buffer overflow in QEMU's device tree loading allows attackers to execute arbitrary code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-20815?
CVE-2018-20815 is a critical memory corruption vulnerability in Qemu Qemu, published on 31 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In QEMU 3.1.0, load_device_tree in device_tree.c calls the deprecated load_image function, which has a buffer overflow risk.
Weakness: CWE-119
Which versions are affected by CVE-2018-20815?
It affects 1 product.
Linux distribution packages (25)
qemu-img-ma Red Hat:enterprise_linux:7::server | All versions | 10:2.12.0-18.el7_6.4 |
qemu-kvm-common-ma Red Hat:enterprise_linux:7::server | All versions | 10:2.12.0-18.el7_6.4 |
qemu-kvm-ma Red Hat:enterprise_linux:7::server | All versions | 10:2.12.0-18.el7_6.4 |
qemu-kvm-ma-debuginfo Red Hat:enterprise_linux:7::server | All versions | 10:2.12.0-18.el7_6.4 |
qemu-kvm-tools-ma Red Hat:enterprise_linux:7::server | All versions | 10:2.12.0-18.el7_6.4 |
qemu-img-rhev Red Hat:openstack:10::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-common-rhev Red Hat:openstack:10::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-rhev Red Hat:openstack:10::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-rhev-debuginfo Red Hat:openstack:10::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-tools-rhev Red Hat:openstack:10::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-img-rhev Red Hat:openstack:13::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-common-rhev Red Hat:openstack:13::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-rhev Red Hat:openstack:13::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-rhev-debuginfo Red Hat:openstack:13::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-tools-rhev Red Hat:openstack:13::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-img-rhev Red Hat:openstack:14::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-common-rhev Red Hat:openstack:14::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-rhev Red Hat:openstack:14::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-rhev-debuginfo Red Hat:openstack:14::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-tools-rhev Red Hat:openstack:14::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-img-rhev Red Hat:openstack:9::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-common-rhev Red Hat:openstack:9::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-rhev Red Hat:openstack:9::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-rhev-debuginfo Red Hat:openstack:9::el7 | All versions | 10:2.12.0-18.el7_6.6 |
qemu-kvm-tools-rhev Red Hat:openstack:9::el7 | All versions | 10:2.12.0-18.el7_6.6 |
Products include Qemu Qemu.
How do I fix CVE-2018-20815?
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-2018-20815 being exploited?
There is no known exploitation of CVE-2018-20815 in the wild and no public exploit code.
Other vulnerabilities in Qemu Qemu
Sources
Also known as DEBIAN-CVE-2018-20815, GHSA-4g35-fx39-gwjh, RHSA-2019:1667, RHSA-2019:1723, RHSA-2019:1743, RHSA-2019:1881 and 2 more.