CVE-2019-18837 An issue was discovered in crun before 0.10.5.
High 8.6
Published
Updated
Check this codebase for CVE-2019-18837 and fix it if it is affected.
What it is: CVE-2019-18837 is a high-severity vulnerability in Fedoraproject Fedora, published on 13 Nov 2019.
Exploitation: There is no known exploitation of CVE-2019-18837 in the wild and no public exploit code.
Affected product: Fedoraproject Fedora. 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-2019-18837/ (Markdown: https://insights.sbomify.com/CVE-2019-18837/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2019-18837?
CVE-2019-18837 is a high-severity vulnerability in Fedoraproject Fedora, published on 13 Nov 2019.
Official description
An issue was discovered in crun before 0.10.5. With a crafted image, it doesn't correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.
Weakness: CWE-59
Which versions are affected by CVE-2019-18837?
It affects 2 products.
Products include Crun Project Crun, Fedoraproject Fedora.
How do I fix CVE-2019-18837?
No fix has been published for CVE-2019-18837 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-18837 being exploited?
There is no known exploitation of CVE-2019-18837 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as GHSA-992m-xc3g-r7rj.