# CVE-2001-0572: Information disclosure in n/a

> Remote attackers can sniff SSH traffic to reveal password lengths, authentication types, and command lengths, aiding brute-force attacks.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Jul 2001
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-m5hh-422h-x5pc

## What is CVE-2001-0572?

CVE-2001-0572 is a high-severity vulnerability in OpenSSH, published on 27 Jul 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The SSH protocols 1 and 2 (aka SSH-2) as implemented in OpenSSH and other packages have various weaknesses which can allow a remote attacker to obtain the following information via sniffing: (1) password lengths or ranges of lengths, which simplifies brute force password guessing, (2) whether RSA or DSA authentication is being used, (3) the number of authorized_keys in RSA authentication, or (4) the lengths of shell commands.

## Which versions are affected by CVE-2001-0572?

It affects 2 products.


Products: OpenSSH, Ssh Ssh.

## How do I fix CVE-2001-0572?

No fix has been published for CVE-2001-0572 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-0572 being exploited?

There is no known exploitation of CVE-2001-0572 in the wild and no public exploit code.

## Other vulnerabilities in OpenSSH

- [CVE-2003-0786](https://insights.sbomify.com/CVE-2003-0786/): Auth bypass in n/a (critical 10.0)
- [CVE-2003-0693](https://insights.sbomify.com/CVE-2003-0693/): Memory corruption in n/a (critical 10.0)
- [CVE-2002-0640](https://insights.sbomify.com/CVE-2002-0640/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0144](https://insights.sbomify.com/CVE-2001-0144/): Integer overflow in n/a (critical 10.0)
- [CVE-2000-0999](https://insights.sbomify.com/CVE-2000-0999/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-0572 and fix it if it is affected.

What it is: CVE-2001-0572 is a high-severity vulnerability in OpenSSH, published on 27 Jul 2001. 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-2001-0572 in the wild and no public exploit code.

Affected product: OpenSSH. 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-2001-0572/ (Markdown: https://insights.sbomify.com/CVE-2001-0572/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-0572
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-0572
- OSV: https://osv.dev/vulnerability/CVE-2001-0572

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-0572/
Summaries are generated and may contain mistakes; the official description above is the record.