# CVE-2004-2243: Auth bypass in n/a

> Remote attackers can hijack user sessions by stealing and replaying session hashes, leading to account takeover.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Jul 2005
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-c689-hwv4-37cm

## What is CVE-2004-2243?

CVE-2004-2243 is a high-severity authentication bypass vulnerability in Phorum Phorum, published on 17 Jul 2005. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Phorum allows remote attackers to hijack sessions of other users by stealing and replaying the session hash in the phorum_uriauth parameter, as demonstrated using profile.php.  NOTE: the affected version was reported to be 4.3.7, but this may be erroneous.

## Which versions are affected by CVE-2004-2243?

It affects 1 product.


Products: Phorum Phorum.

## How do I fix CVE-2004-2243?

No fix has been published for CVE-2004-2243 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-2243 being exploited?

There is no known exploitation of CVE-2004-2243 in the wild and no public exploit code.

## Other vulnerabilities in Phorum Phorum

- [CVE-2003-1487](https://insights.sbomify.com/CVE-2003-1487/): Command injection in n/a (critical 10.0)
- [CVE-2003-1466](https://insights.sbomify.com/CVE-2003-1466/): Server-side request forgery in n/a (high 7.5)
- [CVE-2007-2338](https://insights.sbomify.com/CVE-2007-2338/): Cross-site request forgery in n/a (high 7.5)
- [CVE-2007-2339](https://insights.sbomify.com/CVE-2007-2339/): SQL injection in n/a (high 7.5)
- [CVE-2006-6550](https://insights.sbomify.com/CVE-2006-6550/): Code injection in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-2243 and fix it if it is affected.

What it is: CVE-2004-2243 is a high-severity authentication bypass vulnerability in Phorum Phorum, published on 17 Jul 2005. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2004-2243 in the wild and no public exploit code.

Affected product: Phorum Phorum. 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-2004-2243/ (Markdown: https://insights.sbomify.com/CVE-2004-2243/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-2243
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-2243
- OSV: https://osv.dev/vulnerability/CVE-2004-2243

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-2243/
Summaries are generated and may contain mistakes; the official description above is the record.