CVE-2020-18032 Memory corruption in n/a
High 7.8
Published
Updated
Check this codebase for CVE-2020-18032 and fix it if it is affected.
What it is: CVE-2020-18032 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 29 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-18032 in the wild and no public exploit code.
Affected product: Debian Debian 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-2020-18032/ (Markdown: https://insights.sbomify.com/CVE-2020-18032/index.md)
Remote attackers can execute arbitrary code or crash the application by loading a crafted file into the Graphviz library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-18032?
CVE-2020-18032 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 29 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Buffer Overflow in Graphviz Graph Visualization Tools from commit ID f8b9e035 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (application crash) by loading a crafted file into the "lib/common/shapes.c" component.
Weakness: CWE-120
Which versions are affected by CVE-2020-18032?
It affects 3 products.
Linux distribution packages (40)
graphviz AlmaLinux:8 | All versions | 2.40.1-43.el8 |
graphviz-devel AlmaLinux:8 | All versions | 2.40.1-43.el8 |
graphviz-doc AlmaLinux:8 | All versions | 2.40.1-43.el8 |
graphviz-gd AlmaLinux:8 | All versions | 2.40.1-43.el8 |
graphviz-python3 AlmaLinux:8 | All versions | 2.40.1-43.el8 |
graphviz Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-gd-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-guile-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-java-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-lua-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-ocaml-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-perl-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-python3-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-ruby-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-tcl-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.40.1-43.el8 |
graphviz-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-debugsource Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-devel Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-doc Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-gd Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-gd-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-guile-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-java-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-lua-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-ocaml-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-perl-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-python3 Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-python3-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-ruby-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz-tcl-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:2.40.1-43.el8 |
graphviz Rocky Linux:8 | All versions | 0:2.40.1-43.el8 |
graphviz SUSE:Enterprise Storage 6 | All versions | 2.40.1-6.9.1 |
graphviz-addons SUSE:Enterprise Storage 6 | All versions | 2.40.1-6.9.1 |
graphviz SUSE:HPE Helion OpenStack 8 | All versions | 2.28.0-29.6.1 |
graphviz-plugins SUSE:HPE Helion OpenStack 8 | All versions | 2.28.0-29.6.1 |
graphviz-plugins SUSE:Linux Enterprise High Availability Extension 12 SP3 | All versions | 2.28.0-29.6.1 |
graphviz-plugins SUSE:Linux Enterprise High Availability Extension 12 SP4 | All versions | 2.28.0-29.6.1 |
graphviz-plugins SUSE:Linux Enterprise High Availability Extension 12 SP5 | All versions | 2.28.0-29.6.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Graphviz Graphviz.
How do I fix CVE-2020-18032?
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-2020-18032 being exploited?
There is no known exploitation of CVE-2020-18032 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2020-18032, ALSA-2021:4256, AZL-34767, AZL-6454, CLEANSTART-2026-IG79892, DEBIAN-CVE-2020-18032 and 11 more.