# CVE-2015-4331: Auth bypass in n/a

> Authenticated users can bypass access restrictions in Cisco Prime Infrastructure by manipulating username case when AAA authentication is enabled.

- **Severity:** Low 3.5 (`AV:N/AC:M/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:** 22 Aug 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-9fc5-rqh6-qhwg

## What is CVE-2015-4331?

CVE-2015-4331 is a low-severity authentication bypass vulnerability in Cisco Prime Infrastructure, published on 22 Aug 2015. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Cisco Prime Infrastructure (PI) 1.4(0.45) and earlier, when AAA authentication is used, allows remote authenticated users to bypass intended access restrictions via a username with a modified composition of lowercase and uppercase characters, aka Bug ID CSum59958.

Weakness: CWE-264

## Which versions are affected by CVE-2015-4331?

It affects 1 product.


Products: Cisco Prime Infrastructure.

## How do I fix CVE-2015-4331?

No fix has been published for CVE-2015-4331 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-4331 being exploited?

There is no known exploitation of CVE-2015-4331 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Prime Infrastructure

- [CVE-2018-15379](https://insights.sbomify.com/CVE-2018-15379/): Cisco Prime Infrastructure Arbitrary File Upload and Command Execution Vulnerability (critical 9.8)
- [CVE-2014-0679](https://insights.sbomify.com/CVE-2014-0679/): Command injection in n/a (critical 9.0)
- [CVE-2016-1442](https://insights.sbomify.com/CVE-2016-1442/): Command injection in n/a (high 8.8)
- [CVE-2016-1359](https://insights.sbomify.com/CVE-2016-1359/): Code injection in n/a (high 8.8)
- [CVE-2019-1659](https://insights.sbomify.com/CVE-2019-1659/): Cisco Prime Infrastructure Certificate Validation Vulnerability (high 7.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-4331 and fix it if it is affected.

What it is: CVE-2015-4331 is a low-severity authentication bypass vulnerability in Cisco Prime Infrastructure, published on 22 Aug 2015. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-4331 in the wild and no public exploit code.

Affected product: Cisco Prime Infrastructure. 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-2015-4331/ (Markdown: https://insights.sbomify.com/CVE-2015-4331/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-4331
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-4331
- OSV: https://osv.dev/vulnerability/CVE-2015-4331

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-4331/
Summaries are generated and may contain mistakes; the official description above is the record.