CVE-2021-46020 Null dereference in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2021-46020 and fix it if it is affected.
What it is: CVE-2021-46020 is a high-severity vulnerability in n/a, published on 14 Jan 2022. 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-2021-46020 in the wild and no public exploit code.
Affected product: n/a. 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-2021-46020/ (Markdown: https://insights.sbomify.com/CVE-2021-46020/index.md)
An untrusted pointer dereference in the mruby interpreter allows attackers to cause a segmentation fault and application crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-46020?
CVE-2021-46020 is a high-severity vulnerability in n/a, published on 14 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An untrusted pointer dereference in mrb_vm_exec() of mruby v3.0.0 can lead to a segmentation fault or application crash.
Weakness: CWE-119
Which versions are affected by CVE-2021-46020?
It affects 1 product.
Products include Mruby Mruby.
How do I fix CVE-2021-46020?
Upgrade to a fixed version.
Is CVE-2021-46020 being exploited?
There is no known exploitation of CVE-2021-46020 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2021-46020, GHSA-f639-3h6h-vr46, UBUNTU-CVE-2021-46020.