# CVE-2003-0791: Deserialization in n/a

> Attackers can execute native code by manipulating input to the script.thaw function in Mozilla browsers, requiring an upgrade to mitigate.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Apr 2005
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-8cc8-674c-8354

## What is CVE-2003-0791?

CVE-2003-0791 is a critical unsafe deserialization vulnerability in Mozilla Mozilla, published on 14 Apr 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Script.prototype.freeze/thaw functionality in Mozilla 1.4 and earlier allows attackers to execute native methods by modifying the string used as input to the script.thaw JavaScript function, which is then deserialized and executed.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2003-0791?

It affects 2 products.


Products: Mozilla Mozilla, Sco Openserver.

## How do I fix CVE-2003-0791?

No fix has been published for CVE-2003-0791 yet. Limit exposure of the affected software until one is available.

## Is CVE-2003-0791 being exploited?

There is no known exploitation of CVE-2003-0791 in the wild and no public exploit code.

## Other vulnerabilities in Mozilla Mozilla

- [CVE-2007-1794](https://insights.sbomify.com/CVE-2007-1794/): Use after free in n/a (critical 10.0)
- [CVE-2004-0722](https://insights.sbomify.com/CVE-2004-0722/): Integer overflow in n/a (critical 10.0)
- [CVE-2007-4039](https://insights.sbomify.com/CVE-2007-4039/): Command injection in n/a (critical 9.8)
- [CVE-2005-3896](https://insights.sbomify.com/CVE-2005-3896/): Denial of service in n/a (high 7.8)
- [CVE-2002-2061](https://insights.sbomify.com/CVE-2002-2061/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2003-0791 and fix it if it is affected.

What it is: CVE-2003-0791 is a critical unsafe deserialization vulnerability in Mozilla Mozilla, published on 14 Apr 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-2003-0791 in the wild and no public exploit code.

Affected product: Mozilla Mozilla. 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-2003-0791/ (Markdown: https://insights.sbomify.com/CVE-2003-0791/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2003-0791
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2003-0791
- OSV: https://osv.dev/vulnerability/CVE-2003-0791

---
From sbomify Insights: https://insights.sbomify.com/CVE-2003-0791/
Summaries are generated and may contain mistakes; the official description above is the record.