# CVE-2011-4051: Auth bypass in n/a

> Remote attackers can execute arbitrary code on InduSoft Web Studio servers without authentication due to missing checks in the Remote Agent module.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Dec 2011
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-mx3h-2chv-mcx2

## What is CVE-2011-4051?

CVE-2011-4051 is a critical authentication bypass vulnerability in n/a, published on 5 Dec 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

CEServer.exe in the CEServer component in the Remote Agent module in InduSoft Web Studio 6.1 and 7.0 does not require authentication, which allows remote attackers to execute arbitrary code via vectors related to creation of a file, loading a DLL, and process control.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2011-4051?

It affects 1 product.


Products: Indusoft Web Studio.

## How do I fix CVE-2011-4051?

No fix has been published for CVE-2011-4051 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-4051 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-4051 exists.

Public exploit code:

- InduSoft Web Studio Arbitrary Upload Remote Code Execution (metasploit)
- InduSoft Web Studio - Arbitrary File Upload / Remote Code Execution (Metasploit) (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2014-0780](https://insights.sbomify.com/CVE-2014-0780/): InduSoft Web Studio NTWebServer Directory Traversal (high 7.5, exploited in the wild)
- [CVE-2011-0342](https://insights.sbomify.com/CVE-2011-0342/): Memory corruption in n/a (critical 10.0)
- [CVE-2011-1900](https://insights.sbomify.com/CVE-2011-1900/): Path traversal in n/a (critical 10.0)
- [CVE-2018-8840](https://insights.sbomify.com/CVE-2018-8840/): Memory corruption in Schneider Electric InduSoft Web Studio and InTouch Machine Edition (critical 9.8)
- [CVE-2011-4052](https://insights.sbomify.com/CVE-2011-4052/): Memory corruption in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-4051 and fix it if it is affected.

What it is: CVE-2011-4051 is a critical authentication bypass vulnerability in n/a, published on 5 Dec 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-4051 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-2011-4051/ (Markdown: https://insights.sbomify.com/CVE-2011-4051/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-4051
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-4051
- OSV: https://osv.dev/vulnerability/CVE-2011-4051

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-4051/
Summaries are generated and may contain mistakes; the official description above is the record.