CVE-2020-21861 File upload in n/a
High 8.8
Published
Updated
Check this codebase for CVE-2020-21861 and fix it if it is affected.
What it is: CVE-2020-21861 is a high-severity vulnerability in n/a, published on 6 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-21861 exists.
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-2020-21861/ (Markdown: https://insights.sbomify.com/CVE-2020-21861/index.md)
Attackers can execute arbitrary PHP code by uploading malicious files to the DuxCMS admin upload endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-21861?
CVE-2020-21861 is a high-severity vulnerability in n/a, published on 6 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
File upload vulnerability in DuxCMS 2.1 allows attackers to execute arbitrary php code via duxcms/AdminUpload/upload.
Weakness: CWE-434
Which versions are affected by CVE-2020-21861?
It affects 1 product.
Products include Duxcms Project Duxcms.
How do I fix CVE-2020-21861?
No fix has been published for CVE-2020-21861 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-21861 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-21861 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cxvj-gmrx-gjv8.