# CVE-2009-3274: Race condition in n/a

> Local attackers can replace downloaded files via predictable /tmp paths in Firefox on Linux, requiring user interaction to initiate downloads.

- **Severity:** Medium 4.4 (`AV:L/AC:M/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 21 Sep 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-r6ww-vw3x-xp48

## What is CVE-2009-3274?

CVE-2009-3274 is a medium-severity vulnerability in Mozilla Firefox, published on 21 Sep 2009. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Mozilla Firefox 3.6a1, 3.5.3, 3.5.2, and earlier 3.5.x versions, and 3.0.14 and earlier 2.x and 3.x versions, on Linux uses a predictable /tmp pathname for files selected from the Downloads window, which allows local users to replace an arbitrary downloaded file by placing a file in a /tmp location before the download occurs, related to the Download Manager component. NOTE: some of these details are obtained from third party information.

## Which versions are affected by CVE-2009-3274?

It affects 1 product.


Products: Mozilla Firefox.

## How do I fix CVE-2009-3274?

Upgrade to a fixed version.

## Is CVE-2009-3274 being exploited?

There is no known exploitation of CVE-2009-3274 in the wild and no public exploit code.

## Other vulnerabilities in Mozilla Firefox

- [CVE-2019-11708](https://insights.sbomify.com/CVE-2019-11708/): Mozilla Firefox and Thunderbird Sandbox Escape (critical 10.0, exploited in the wild)
- [CVE-2010-3765](https://insights.sbomify.com/CVE-2010-3765/): Mozilla Multiple Products Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2022-26486](https://insights.sbomify.com/CVE-2022-26486/): Mozilla Firefox Use-After-Free (critical 9.6, exploited in the wild)
- [CVE-2022-26485](https://insights.sbomify.com/CVE-2022-26485/): Mozilla Firefox Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2019-11707](https://insights.sbomify.com/CVE-2019-11707/): Mozilla Firefox and Thunderbird Type Confusion (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-3274 and fix it if it is affected.

What it is: CVE-2009-3274 is a medium-severity vulnerability in Mozilla Firefox, published on 21 Sep 2009. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2009-3274 in the wild and no public exploit code.

Affected product: Mozilla Firefox. 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-2009-3274/ (Markdown: https://insights.sbomify.com/CVE-2009-3274/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-3274
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-3274
- OSV: https://osv.dev/vulnerability/CVE-2009-3274

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-3274/
Summaries are generated and may contain mistakes; the official description above is the record.