# CVE-2009-4913: Auth bypass in n/a

> Remote attackers can bypass access restrictions on Cisco ASA devices by sending IPv6 packets, exposing IP services on the far side of the box.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Jun 2010
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-jjqv-555m-3f57

## What is CVE-2009-4913?

CVE-2009-4913 is a medium-severity authentication bypass vulnerability in n/a, published on 29 Jun 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The IPv6 implementation on Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) exposes IP services on the "far side of the box," which might allow remote attackers to bypass intended access restrictions via IPv6 packets, aka Bug ID CSCso58622.

Weakness: CWE-264

## Which versions are affected by CVE-2009-4913?

It affects 1 product.


Products: Cisco Asa 5580.

## How do I fix CVE-2009-4913?

No fix has been published for CVE-2009-4913 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-4913 being exploited?

There is no known exploitation of CVE-2009-4913 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2009-4912](https://insights.sbomify.com/CVE-2009-4912/): Auth bypass in n/a (critical 10.0)
- [CVE-2009-4919](https://insights.sbomify.com/CVE-2009-4919/): Memory corruption in n/a (critical 10.0)
- [CVE-2009-4911](https://insights.sbomify.com/CVE-2009-4911/): Denial of service in n/a (high 7.8)
- [CVE-2009-4914](https://insights.sbomify.com/CVE-2009-4914/): Denial of service in n/a (high 7.8)
- [CVE-2009-4915](https://insights.sbomify.com/CVE-2009-4915/): Denial of service in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-4913 and fix it if it is affected.

What it is: CVE-2009-4913 is a medium-severity authentication bypass vulnerability in n/a, published on 29 Jun 2010. 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-2009-4913 in the wild and no public exploit code.

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-2009-4913/ (Markdown: https://insights.sbomify.com/CVE-2009-4913/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-4913
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-4913
- OSV: https://osv.dev/vulnerability/CVE-2009-4913

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-4913/
Summaries are generated and may contain mistakes; the official description above is the record.