# CVE-2001-0787: Privilege escalation in n/a

> Local users can elevate privileges due to improper group membership dropping in LPRng on Red Hat Linux.

- **Severity:** Medium 4.6 (`AV:L/AC:L/Au:N/C:P/I:P/A:P`)
- **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:** 9 Mar 2002
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-8cwj-qxjh-6vq7

## What is CVE-2001-0787?

CVE-2001-0787 is a medium-severity vulnerability in Redhat Linux, published on 9 Mar 2002. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

LPRng in Red Hat Linux 7.0 and 7.1 does not properly drop memberships in supplemental groups when lowering privileges, which could allow a local user to elevate privileges.

## Which versions are affected by CVE-2001-0787?

It affects 1 product.


Products: Redhat Linux.

## How do I fix CVE-2001-0787?

No fix has been published for CVE-2001-0787 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-0787 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2001-0787 exists.

Public exploit code:

- LPRng 3.6.x - Failure To Drop Supplementary Groups (exploitdb)

## Other vulnerabilities in Redhat Linux

- [CVE-2000-1220](https://insights.sbomify.com/CVE-2000-1220/): Privilege escalation in n/a (critical 10.0)
- [CVE-2003-0248](https://insights.sbomify.com/CVE-2003-0248/): Privilege escalation in n/a (critical 10.0)
- [CVE-1999-1542](https://insights.sbomify.com/CVE-1999-1542/): Command injection in n/a (critical 10.0)
- [CVE-1999-1299](https://insights.sbomify.com/CVE-1999-1299/): Privilege escalation in n/a (critical 10.0)
- [CVE-2000-0322](https://insights.sbomify.com/CVE-2000-0322/): Command injection in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-0787 and fix it if it is affected.

What it is: CVE-2001-0787 is a medium-severity vulnerability in Redhat Linux, published on 9 Mar 2002. 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-2001-0787 exists.

Affected product: Redhat Linux. 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-2001-0787/ (Markdown: https://insights.sbomify.com/CVE-2001-0787/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-0787
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-0787
- OSV: https://osv.dev/vulnerability/CVE-2001-0787

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-0787/
Summaries are generated and may contain mistakes; the official description above is the record.