# CVE-2001-1068: Information disclosure in n/a

> Remote attackers can enumerate valid usernames on qpopper servers using PAM authentication due to inconsistent error messages.

- **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:** 2 Feb 2002
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-whxm-qmcm-hrj6

## What is CVE-2001-1068?

CVE-2001-1068 is a medium-severity vulnerability in n/a, published on 2 Feb 2002. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

qpopper 4.01 with PAM based authentication on Red Hat systems generates different error messages when an invalid username is provided instead of a valid name, which allows remote attackers to determine valid usernames on the system.

## Which versions are affected by CVE-2001-1068?

It affects 1 product.


Products: Qualcomm Qpopper.

## How do I fix CVE-2001-1068?

No fix has been published for CVE-2001-1068 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-1068 being exploited?

There is no known exploitation of CVE-2001-1068 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2003-0143](https://insights.sbomify.com/CVE-2003-0143/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-1046](https://insights.sbomify.com/CVE-2001-1046/): Memory corruption in n/a (critical 10.0)
- [CVE-1999-0822](https://insights.sbomify.com/CVE-1999-0822/): Memory corruption in n/a (critical 10.0)
- [CVE-1999-0006](https://insights.sbomify.com/CVE-1999-0006/): Memory corruption in n/a (critical 9.8)
- [CVE-2000-0442](https://insights.sbomify.com/CVE-2000-0442/): Privilege escalation in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-1068 and fix it if it is affected.

What it is: CVE-2001-1068 is a medium-severity vulnerability in n/a, published on 2 Feb 2002. 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-2001-1068 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-2001-1068/ (Markdown: https://insights.sbomify.com/CVE-2001-1068/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-1068
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-1068
- OSV: https://osv.dev/vulnerability/CVE-2001-1068

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-1068/
Summaries are generated and may contain mistakes; the official description above is the record.