# CVE-2011-1892: XML external entity in n/a

> Remote authenticated users can read arbitrary files via crafted XML and XSL files in Microsoft SharePoint and Office products.

- **Severity:** Medium 4.0 (`AV:N/AC:L/Au:S/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Sep 2011
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-w6mm-w2fx-6942

## What is CVE-2011-1892?

CVE-2011-1892 is a medium-severity vulnerability in Microsoft Office Web Apps, published on 15 Sep 2011. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Microsoft Office Groove 2007 SP2, SharePoint Workspace 2010 Gold and SP1, Office Forms Server 2007 SP2, Office SharePoint Server 2007 SP2, Office SharePoint Server 2010 Gold and SP1, Office Groove Data Bridge Server 2007 SP2, Office Groove Management Server 2007 SP2, Groove Server 2010 Gold and SP1, Windows SharePoint Services 3.0 SP2, SharePoint Foundation 2010, and Office Web Apps 2010 Gold and SP1 do not properly handle Web Parts containing XML classes referencing external entities, which allows remote authenticated users to read arbitrary files via a crafted XML and XSL file, aka "SharePoint Remote File Disclosure Vulnerability."

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2011-1892?

It affects 10 products.


Products: Microsoft Forms Server, Microsoft Groove, Microsoft Groove Data Bridge Server, Microsoft Groove Management Server, Microsoft Groove Server, Microsoft Office Web Apps, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server, Microsoft Sharepoint Services, Microsoft Sharepoint Workspace.

## How do I fix CVE-2011-1892?

No fix has been published for CVE-2011-1892 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-1892 being exploited?

There is no known exploitation of CVE-2011-1892 in the wild and no public exploit code.

Public exploit code:

- SharePoint 2007/2010 and DotNetNuke < 6 - File Disclosure (via XEE) (exploitdb)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-1892 and fix it if it is affected.

What it is: CVE-2011-1892 is a medium-severity vulnerability in Microsoft Office Web Apps, published on 15 Sep 2011. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2011-1892 in the wild and no public exploit code.

Affected product: Microsoft Office Web Apps. 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-2011-1892/ (Markdown: https://insights.sbomify.com/CVE-2011-1892/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-1892
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-1892
- OSV: https://osv.dev/vulnerability/CVE-2011-1892

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-1892/
Summaries are generated and may contain mistakes; the official description above is the record.