# CVE-2000-0971: Memory corruption in n/a

> Remote attackers can cause denial of service or execute arbitrary commands via long SMTP commands in Avirt Mail.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Nov 2000
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-3fmr-qqcp-fr3c

## What is CVE-2000-0971?

CVE-2000-0971 is a critical memory corruption vulnerability in n/a, published on 29 Nov 2000. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Avirt Mail 4.0 and 4.2 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long "RCPT TO" or "MAIL FROM" command.

## Which versions are affected by CVE-2000-0971?

It affects 1 product.


Products: Avirt Avirt Mail Server.

## How do I fix CVE-2000-0971?

No fix has been published for CVE-2000-0971 yet. Limit exposure of the affected software until one is available.

## Is CVE-2000-0971 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2000-0971 exists.

Public exploit code:

- Avirt Mail 4.0/4.2 - 'Mail From:' / 'Rcpt to:' Denial of Service (exploitdb)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2000-0971 and fix it if it is affected.

What it is: CVE-2000-0971 is a critical memory corruption vulnerability in n/a, published on 29 Nov 2000. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2000-0971 exists.

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-2000-0971/ (Markdown: https://insights.sbomify.com/CVE-2000-0971/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2000-0971
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2000-0971
- OSV: https://osv.dev/vulnerability/CVE-2000-0971

---
From sbomify Insights: https://insights.sbomify.com/CVE-2000-0971/
Summaries are generated and may contain mistakes; the official description above is the record.