# CVE-2015-4499: Auth bypass in n/a

> Remote attackers can gain unauthorized domain privileges by exploiting email address truncation during account registration in Bugzilla.

- **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:** Yes
- **Published:** 14 Sep 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-cmch-rp3j-f57g

## What is CVE-2015-4499?

CVE-2015-4499 is a high-severity authentication bypass vulnerability in Mozilla Bugzilla, published on 14 Sep 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Util.pm in Bugzilla 2.x, 3.x, and 4.x before 4.2.15, 4.3.x and 4.4.x before 4.4.10, and 5.x before 5.0.1 mishandles long e-mail addresses during account registration, which allows remote attackers to obtain the default privileges for an arbitrary domain name by placing that name in a substring of an address, as demonstrated by truncation of an @mozilla.com.example.com address to an @mozilla.com address.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2015-4499?

It affects 1 product.


Products: Mozilla Bugzilla.

## How do I fix CVE-2015-4499?

Upgrade to a fixed version.

## Is CVE-2015-4499 being exploited?

There is no known exploitation of CVE-2015-4499 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-2015-4499 and fix it if it is affected.

What it is: CVE-2015-4499 is a high-severity authentication bypass vulnerability in Mozilla Bugzilla, published on 14 Sep 2015. 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-2015-4499 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-2015-4499/ (Markdown: https://insights.sbomify.com/CVE-2015-4499/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-4499
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-4499
- OSV: https://osv.dev/vulnerability/CVE-2015-4499

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-4499/
Summaries are generated and may contain mistakes; the official description above is the record.