# CVE-1999-0691: Memory corruption in n/a

> Local attackers can exploit a buffer overflow in the CDE dtaction utility to gain root privileges via a long username.

- **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:** No
- **Published:** 4 Jan 2000
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-rq63-6647-rqxc

## What is CVE-1999-0691?

CVE-1999-0691 is a high-severity memory corruption vulnerability in Ibm Aix, published on 4 Jan 2000. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Buffer overflow in the AddSuLog function of the CDE dtaction utility allows local users to gain root privileges via a long user name.

## Which versions are affected by CVE-1999-0691?

It affects 5 products.


Products: Cde Cde, Digital Unix, Ibm Aix, Sun Solaris, Sun Sunos.

## How do I fix CVE-1999-0691?

No fix has been published for CVE-1999-0691 yet. Limit exposure of the affected software until one is available.

## Is CVE-1999-0691 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-1999-0691 exists.

Public exploit code:

- DIGITAL UNIX 4.0 d/e/f / AIX 4.3.2 / CDE 2.1 / IRIX 6.5.14 / Solaris 7.0 - Local Buffer Overflow (exploitdb)

## Other vulnerabilities in Ibm Aix

- [CVE-1999-0687](https://insights.sbomify.com/CVE-1999-0687/): Auth bypass in n/a (high 7.5)
- [CVE-1999-0689](https://insights.sbomify.com/CVE-1999-0689/): Path traversal in n/a (high 7.2)
- [CVE-1999-0690](https://insights.sbomify.com/CVE-1999-0690/): Privilege escalation in n/a (high 7.2)
- [CVE-1999-0713](https://insights.sbomify.com/CVE-1999-0713/): Privilege escalation in n/a (high 7.2)
- [CVE-1999-0014](https://insights.sbomify.com/CVE-1999-0014/): Privilege escalation in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-1999-0691 and fix it if it is affected.

What it is: CVE-1999-0691 is a high-severity memory corruption vulnerability in Ibm Aix, published on 4 Jan 2000. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-1999-0691 exists.

Affected product: Ibm Aix. 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-1999-0691/ (Markdown: https://insights.sbomify.com/CVE-1999-0691/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-1999-0691
- NVD: https://nvd.nist.gov/vuln/detail/CVE-1999-0691
- OSV: https://osv.dev/vulnerability/CVE-1999-0691

---
From sbomify Insights: https://insights.sbomify.com/CVE-1999-0691/
Summaries are generated and may contain mistakes; the official description above is the record.