# CVE-2011-3667: Auth bypass in n/a

> Remote attackers can create user accounts by exploiting a token in email messages when specific configuration settings are enabled.

- **Severity:** Medium 6.8 (`AV:N/AC:M/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Jan 2012
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-j234-73mf-fxmv

## What is CVE-2011-3667?

CVE-2011-3667 is a medium-severity authentication bypass vulnerability in Mozilla Bugzilla, published on 2 Jan 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The User.offer_account_by_email WebService method in Bugzilla 2.x and 3.x before 3.4.13, 3.5.x and 3.6.x before 3.6.7, 3.7.x and 4.0.x before 4.0.3, and 4.1.x through 4.1.3, when createemailregexp is not empty, does not properly handle user_can_create_account settings, which allows remote attackers to create user accounts by leveraging a token contained in an e-mail message.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2011-3667?

It affects 1 product.


Products: Mozilla Bugzilla.

## How do I fix CVE-2011-3667?

No fix has been published for CVE-2011-3667 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-3667 being exploited?

There is no known exploitation of CVE-2011-3667 in the wild and no public exploit code.

## Other vulnerabilities in Mozilla Bugzilla

- [CVE-2004-0769](https://insights.sbomify.com/CVE-2004-0769/): Memory corruption in n/a (critical 10.0)
- [CVE-2003-1042](https://insights.sbomify.com/CVE-2003-1042/): SQL injection in n/a (critical 10.0)
- [CVE-2003-1043](https://insights.sbomify.com/CVE-2003-1043/): SQL injection in n/a (critical 10.0)
- [CVE-2002-0007](https://insights.sbomify.com/CVE-2002-0007/): Auth bypass in n/a (critical 10.0)
- [CVE-2018-5123](https://insights.sbomify.com/CVE-2018-5123/): Cross-site request forgery in Bugzilla (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-3667 and fix it if it is affected.

What it is: CVE-2011-3667 is a medium-severity authentication bypass vulnerability in Mozilla Bugzilla, published on 2 Jan 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2011-3667 in the wild and no public exploit code.

Affected product: Mozilla Bugzilla. 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-2011-3667/ (Markdown: https://insights.sbomify.com/CVE-2011-3667/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-3667
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-3667
- OSV: https://osv.dev/vulnerability/CVE-2011-3667

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From sbomify Insights: https://insights.sbomify.com/CVE-2011-3667/
Summaries are generated and may contain mistakes; the official description above is the record.