# CVE-2005-3643: Auth bypass in n/a

> Remote attackers can bypass authentication and access the guest account in IBM DB2 on Windows XP when Simple File Sharing is enabled.

- **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:** 16 Nov 2005
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-f88m-xc68-c424

## What is CVE-2005-3643?

CVE-2005-3643 is a high-severity authentication bypass vulnerability in Ibm Db2 Universal Database, published on 16 Nov 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IBM DB2 Database server running on Windows XP with Simple File Sharing enabled, allows remote attackers to bypass authentication and log on to the guest account without supplying a password.

## Which versions are affected by CVE-2005-3643?

It affects 1 product.


Products: Ibm Db2 Universal Database.

## How do I fix CVE-2005-3643?

No fix has been published for CVE-2005-3643 yet. Limit exposure of the affected software until one is available.

## Is CVE-2005-3643 being exploited?

There is no known exploitation of CVE-2005-3643 in the wild and no public exploit code.

## Other vulnerabilities in Ibm Db2 Universal Database

- [CVE-2007-6045](https://insights.sbomify.com/CVE-2007-6045/): Unspecified vulnerability in (1) DB2WATCH and (2) DB2FREEZE in IBM DB2 UDB 9.1 before Fixpak 4 has unknown impact and attack vectors. (critical 10.0)
- [CVE-2007-6047](https://insights.sbomify.com/CVE-2007-6047/): Command injection in n/a (critical 10.0)
- [CVE-2007-6048](https://insights.sbomify.com/CVE-2007-6048/): Misconfiguration in n/a (critical 10.0)
- [CVE-2007-6051](https://insights.sbomify.com/CVE-2007-6051/): IBM DB2 UDB 9.1 before Fixpak 4 assigns incorrect privileges to the (1) DB2ADMNS and (2) DB2USERS alternative groups, which has unknown impact. (critical 10.0)
- [CVE-2005-4865](https://insights.sbomify.com/CVE-2005-4865/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2005-3643 and fix it if it is affected.

What it is: CVE-2005-3643 is a high-severity authentication bypass vulnerability in Ibm Db2 Universal Database, published on 16 Nov 2005. 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-2005-3643 in the wild and no public exploit code.

Affected product: Ibm Db2 Universal Database. 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-2005-3643/ (Markdown: https://insights.sbomify.com/CVE-2005-3643/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2005-3643
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2005-3643
- OSV: https://osv.dev/vulnerability/CVE-2005-3643

---
From sbomify Insights: https://insights.sbomify.com/CVE-2005-3643/
Summaries are generated and may contain mistakes; the official description above is the record.