# CVE-2002-0863: Weak cryptography in n/a

> Remote attackers can sniff RDP traffic to determine session contents due to unencrypted checksums in Windows 2000 and XP.

- **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:** 1 Oct 2002
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-5hh8-598f-9j69

## What is CVE-2002-0863?

CVE-2002-0863 is a medium-severity vulnerability in Microsoft Windows 2000, published on 1 Oct 2002. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Remote Data Protocol (RDP) version 5.0 in Microsoft Windows 2000 and RDP 5.1 in Windows XP does not encrypt the checksums of plaintext session data, which could allow a remote attacker to determine the contents of encrypted sessions via sniffing, aka "Weak Encryption in RDP Protocol."

## Which versions are affected by CVE-2002-0863?

It affects 5 products.


Products: Microsoft .Net Windows Server, Microsoft Windows 2000, Microsoft Windows 2000 Terminal Services, Microsoft Windows Nt, Microsoft Windows Xp.

## How do I fix CVE-2002-0863?

No fix has been published for CVE-2002-0863 yet. Limit exposure of the affected software until one is available.

## Is CVE-2002-0863 being exploited?

There is no known exploitation of CVE-2002-0863 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 2000

- [CVE-2002-0864](https://insights.sbomify.com/CVE-2002-0864/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2002-0863 and fix it if it is affected.

What it is: CVE-2002-0863 is a medium-severity vulnerability in Microsoft Windows 2000, published on 1 Oct 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-2002-0863 in the wild and no public exploit code.

Affected product: Microsoft Windows 2000. 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-2002-0863/ (Markdown: https://insights.sbomify.com/CVE-2002-0863/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2002-0863
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2002-0863
- OSV: https://osv.dev/vulnerability/CVE-2002-0863

---
From sbomify Insights: https://insights.sbomify.com/CVE-2002-0863/
Summaries are generated and may contain mistakes; the official description above is the record.