CVE-2020-5956 An issue was discovered in SdLegacySmm in Insyde InsydeH2O with kernel 5.1 before 05.15.11, 5.2 before 05.25.11, 5.3 before 05.34.11, and 5.4 before 05.42.11.
High 7.5
Published
Updated
Check this codebase for CVE-2020-5956 and fix it if it is affected.
What it is: CVE-2020-5956 is a high-severity vulnerability in Insyde Insydeh2o, published on 5 Jan 2022.
Exploitation: There is no known exploitation of CVE-2020-5956 in the wild and no public exploit code.
Affected product: Insyde Insydeh2o. 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-2020-5956/ (Markdown: https://insights.sbomify.com/CVE-2020-5956/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2020-5956?
CVE-2020-5956 is a high-severity vulnerability in Insyde Insydeh2o, published on 5 Jan 2022.
Official description
An issue was discovered in SdLegacySmm in Insyde InsydeH2O with kernel 5.1 before 05.15.11, 5.2 before 05.25.11, 5.3 before 05.34.11, and 5.4 before 05.42.11. The software SMI handler allows untrusted external input because it does not verify CommBuffer.
Weakness: CWE-20
Which versions are affected by CVE-2020-5956?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2020-5956?
No fix has been published for CVE-2020-5956 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-5956 being exploited?
There is no known exploitation of CVE-2020-5956 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-mr3w-2mcq-243c.