# CVE-2006-3084: Privilege escalation in n/a

> Local attackers can gain privileges in MIT Kerberos 5 and Heimdal ftpd/ksu programs by exploiting unchecked setuid return codes.

- **Severity:** High 7.2 (`AV:L/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 9 Aug 2006
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2006-3084, GHSA-863q-qjw4-fmrr

## What is CVE-2006-3084?

CVE-2006-3084 is a high-severity vulnerability in Mit Kerberos 5, published on 9 Aug 2006. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The (1) ftpd and (2) ksu programs in (a) MIT Kerberos 5 (krb5) up to 1.5, and 1.4.x before 1.4.4, and (b) Heimdal 0.7.2 and earlier, do not check return codes for setuid calls, which might allow local users to gain privileges by causing setuid to fail to drop privileges.  NOTE: as of 20060808, it is not known whether an exploitable attack scenario exists for these issues.

Weakness: CWE-264

## Which versions are affected by CVE-2006-3084?

It affects 2 products.


Products: Heimdal Heimdal, Mit Kerberos 5.

## How do I fix CVE-2006-3084?

Upgrade to a fixed version.

## Is CVE-2006-3084 being exploited?

There is no known exploitation of CVE-2006-3084 in the wild and no public exploit code.

## Other vulnerabilities in Mit Kerberos 5

- [CVE-2007-5939](https://insights.sbomify.com/CVE-2007-5939/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-3083](https://insights.sbomify.com/CVE-2006-3083/): Privilege escalation in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-3084 and fix it if it is affected.

What it is: CVE-2006-3084 is a high-severity vulnerability in Mit Kerberos 5, published on 9 Aug 2006. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2006-3084 in the wild and no public exploit code.

Affected product: Mit Kerberos 5. 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-2006-3084/ (Markdown: https://insights.sbomify.com/CVE-2006-3084/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-3084
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-3084
- OSV: https://osv.dev/vulnerability/CVE-2006-3084

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-3084/
Summaries are generated and may contain mistakes; the official description above is the record.