# CVE-2011-0394: Denial of service in n/a

> Remote attackers can cause a denial of service on Cisco ASA and PIX devices by sending malformed Skinny Client Control Protocol messages.

- **Severity:** High 7.8 (`AV:N/AC:L/Au:N/C:N/I:N/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 Feb 2011
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-qfv3-44v2-26g4

## What is CVE-2011-0394?

CVE-2011-0394 is a high-severity denial of service vulnerability in Cisco 5500 Series Adaptive Security Appliance, published on 25 Feb 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 7.0 before 7.0(8.11), 7.1 and 7.2 before 7.2(5.1), 8.0 before 8.0(5.19), 8.1 before 8.1(2.47), 8.2 before 8.2(2.19), and 8.3 before 8.3(1.8); Cisco PIX Security Appliances 500 series devices; and Cisco Firewall Services Module (aka FWSM) 3.1 before 3.1(20), 3.2 before 3.2(20), 4.0 before 4.0(15), and 4.1 before 4.1(5) allow remote attackers to cause a denial of service (device reload) via a malformed Skinny Client Control Protocol (SCCP) message, aka Bug IDs CSCtg69457 and CSCtl84952.

Weakness: CWE-399

## Which versions are affected by CVE-2011-0394?

It affects 7 products.


Products: Cisco 5500 Series Adaptive Security Appliance, Cisco Adaptive Security Appliance, Cisco Adaptive Security Appliance Software, Cisco Asa 5500, Cisco Firewall Services Module, Cisco Firewall Services Module Software, Cisco Pix 500.

## How do I fix CVE-2011-0394?

No fix has been published for CVE-2011-0394 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-0394 being exploited?

There is no known exploitation of CVE-2011-0394 in the wild and no public exploit code.

## Other vulnerabilities in Cisco 5500 Series Adaptive Security Appliance

- [CVE-2012-0358](https://insights.sbomify.com/CVE-2012-0358/): Memory corruption in n/a (critical 9.3)
- [CVE-2012-4661](https://insights.sbomify.com/CVE-2012-4661/): Memory corruption in n/a (critical 9.0)
- [CVE-2010-4675](https://insights.sbomify.com/CVE-2010-4675/): Auth bypass in n/a (critical 9.0)
- [CVE-2010-4680](https://insights.sbomify.com/CVE-2010-4680/): Security feature bypass in n/a (critical 9.0)
- [CVE-2011-3298](https://insights.sbomify.com/CVE-2011-3298/): Auth bypass in n/a (high 7.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-0394 and fix it if it is affected.

What it is: CVE-2011-0394 is a high-severity denial of service vulnerability in Cisco 5500 Series Adaptive Security Appliance, published on 25 Feb 2011. 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-2011-0394 in the wild and no public exploit code.

Affected product: Cisco 5500 Series Adaptive Security Appliance. 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-2011-0394/ (Markdown: https://insights.sbomify.com/CVE-2011-0394/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-0394
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-0394
- OSV: https://osv.dev/vulnerability/CVE-2011-0394

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From sbomify Insights: https://insights.sbomify.com/CVE-2011-0394/
Summaries are generated and may contain mistakes; the official description above is the record.