# CVE-2011-5007: Memory corruption in n/a

> Remote attackers can execute arbitrary code on ABB AC500 PLCs via a stack-based buffer overflow in the CmpWebServer component.

- **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:** 25 Dec 2011
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-p96c-w9qf-8j98

## What is CVE-2011-5007?

CVE-2011-5007 is a critical memory corruption vulnerability in n/a, published on 25 Dec 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Stack-based buffer overflow in the CmpWebServer component in 3S CoDeSys 3.4 SP4 Patch 2 and earlier, as used on the ABB AC500 PLC and possibly other products, allows remote attackers to execute arbitrary code via a long URI to TCP port 8080.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2011-5007?

It affects 1 product.


Products: 3ssoftware Codesys.

## How do I fix CVE-2011-5007?

No fix has been published for CVE-2011-5007 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-5007 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-5007 exists.

Public exploit code:

- CoDeSys SCADA 2.3 - Remote Buffer Overflow (exploitdb)
- SCADA 3S CoDeSys CmpWebServer Stack Buffer Overflow (metasploit)
- CoDeSys SCADA 2.3 - WebServer Stack Buffer Overflow (Metasploit) (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2011-5008](https://insights.sbomify.com/CVE-2011-5008/): Integer overflow in n/a (high 7.5)
- [CVE-2011-5058](https://insights.sbomify.com/CVE-2011-5058/): Path traversal in n/a (medium 6.4)
- [CVE-2011-5009](https://insights.sbomify.com/CVE-2011-5009/): Null dereference in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-5007 and fix it if it is affected.

What it is: CVE-2011-5007 is a critical memory corruption vulnerability in n/a, published on 25 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-2011-5007 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-2011-5007/ (Markdown: https://insights.sbomify.com/CVE-2011-5007/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-5007
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-5007
- OSV: https://osv.dev/vulnerability/CVE-2011-5007

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-5007/
Summaries are generated and may contain mistakes; the official description above is the record.