CVE-2021-34517 Microsoft SharePoint Server Spoofing Vulnerability
Medium 5.3
Published
Updated
Check this codebase for CVE-2021-34517 and fix it if it is affected.
What it is: CVE-2021-34517 is a medium-severity vulnerability in Microsoft Sharepoint Foundation, published on 14 Jul 2021. 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-2021-34517 in the wild and no public exploit code.
Affected product: Microsoft Sharepoint Foundation. 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-2021-34517/ (Markdown: https://insights.sbomify.com/CVE-2021-34517/index.md)
An attacker can spoof content in Microsoft SharePoint Server, potentially misleading users about the source or integrity of information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34517?
CVE-2021-34517 is a medium-severity vulnerability in Microsoft Sharepoint Foundation, published on 14 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Microsoft SharePoint Server Spoofing Vulnerability
Which versions are affected by CVE-2021-34517?
It affects 2 products.
Products include Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.
How do I fix CVE-2021-34517?
No fix has been published for CVE-2021-34517 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-34517 being exploited?
There is no known exploitation of CVE-2021-34517 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sharepoint Foundation
- CVE-2014-2816 Privilege escalation in n/a
- CVE-2023-21742 Microsoft SharePoint Server Remote Code Execution Vulnerability
- CVE-2023-21744 Microsoft SharePoint Server Remote Code Execution Vulnerability
- CVE-2022-44690 Microsoft SharePoint Server Remote Code Execution Vulnerability
- CVE-2022-41036 Microsoft SharePoint Server Remote Code Execution Vulnerability
Sources
Also known as GHSA-cf5c-cp75-9wvg.