# CVE-2001-1122: Denial of service in n/a

> Local attackers with write access to system directories can crash the Local Security Authority Subsystem Service, causing denial of service.

- **Severity:** Low 2.1 (`AV:L/AC:L/Au:N/C:N/I:N/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:** 15 Mar 2002
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-v64g-ccfg-9cfv

## What is CVE-2001-1122?

CVE-2001-1122 is a low-severity denial of service vulnerability in Microsoft Windows Nt, published on 15 Mar 2002. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Windows NT 4.0 SP 6a allows a local user with write access to winnt/system32 to cause a denial of service (crash in lsass.exe) by running the NT4ALL exploit program in 'SPECIAL' mode.

## Which versions are affected by CVE-2001-1122?

It affects 1 product.


Products: Microsoft Windows Nt.

## How do I fix CVE-2001-1122?

No fix has been published for CVE-2001-1122 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-1122 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2001-1122 exists.

Public exploit code:

- Microsoft Windows NT 4.0 - NT4ALL Denial of Service (exploitdb)

## Other vulnerabilities in Microsoft Windows Nt

- [CVE-2004-0900](https://insights.sbomify.com/CVE-2004-0900/): The DHCP Server service for Microsoft Windows NT 4.0 Server and Terminal Server Edition does not properly validate the length of certain mes (critical 10.0)
- [CVE-2001-0045](https://insights.sbomify.com/CVE-2001-0045/): The default permissions for the RAS Administration key in Windows NT 4.0 allows local users to execute arbitrary commands by changing the va (critical 10.0)
- [CVE-1999-0119](https://insights.sbomify.com/CVE-1999-0119/): Windows NT 4.0 beta allows users to read and delete shares. (critical 10.0)
- [CVE-1999-0226](https://insights.sbomify.com/CVE-1999-0226/): Denial of service in n/a (critical 10.0)
- [CVE-1999-0285](https://insights.sbomify.com/CVE-1999-0285/): Denial of service in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-1122 and fix it if it is affected.

What it is: CVE-2001-1122 is a low-severity denial of service vulnerability in Microsoft Windows Nt, published on 15 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-2001-1122 exists.

Affected product: Microsoft Windows Nt. 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-2001-1122/ (Markdown: https://insights.sbomify.com/CVE-2001-1122/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-1122
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-1122
- OSV: https://osv.dev/vulnerability/CVE-2001-1122

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-1122/
Summaries are generated and may contain mistakes; the official description above is the record.