CVE-2021-31256 Information disclosure in n/a
Medium 5.5
Published
Updated
Check this codebase for CVE-2021-31256 and fix it if it is affected.
What it is: CVE-2021-31256 is a medium-severity vulnerability in Gpac Gpac, published on 19 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-2021-31256 in the wild and no public exploit code.
Affected product: Gpac Gpac. 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-2021-31256/ (Markdown: https://insights.sbomify.com/CVE-2021-31256/index.md)
Attackers can read sensitive memory via a crafted file due to a memory leak in GPAC's MP4Box tool.
- 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-2021-31256?
CVE-2021-31256 is a medium-severity vulnerability in Gpac Gpac, published on 19 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
Memory leak in the stbl_GetSampleInfos function in MP4Box in GPAC 1.0.1 allows attackers to read memory via a crafted file.
Weakness: CWE-401
Which versions are affected by CVE-2021-31256?
It affects 1 product.
Products include Gpac Gpac.
How do I fix CVE-2021-31256?
Upgrade to a fixed version.
Is CVE-2021-31256 being exploited?
There is no known exploitation of CVE-2021-31256 in the wild and no public exploit code.
Other vulnerabilities in Gpac Gpac
Sources
Also known as DEBIAN-CVE-2021-31256, GHSA-mcxf-4rj7-vpf7, UBUNTU-CVE-2021-31256.