# CVE-2003-1387: Memory corruption in n/a

> Remote attackers can execute arbitrary code by tricking users into visiting a URL with a long username, affecting Opera browser users.

- **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:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Oct 2007
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-mxqp-2426-6mxr

## What is CVE-2003-1387?

CVE-2003-1387 is a high-severity memory corruption vulnerability in Opera Opera Browser, published on 19 Oct 2007. 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

Buffer overflow in Opera 6.05 and 6.06, and possibly other versions, allows remote attackers to execute arbitrary code via a URL with a long username.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2003-1387?

It affects 1 product.


Products: Opera Opera Browser.

## How do I fix CVE-2003-1387?

No fix has been published for CVE-2003-1387 yet. Limit exposure of the affected software until one is available.

## Is CVE-2003-1387 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2003-1387 exists.

Public exploit code:

- Opera 6.0/7.0 - 'Username' URI Warning Dialog Buffer Overflow (exploitdb)

## Other vulnerabilities in Opera Opera Browser

- [CVE-2013-3211](https://insights.sbomify.com/CVE-2013-3211/): Unspecified vulnerability in Opera before 12.15 has unknown impact and attack vectors, related to a "moderately severe issue." (critical 10.0)
- [CVE-2012-4145](https://insights.sbomify.com/CVE-2012-4145/): Other in n/a (critical 10.0)
- [CVE-2012-3559](https://insights.sbomify.com/CVE-2012-3559/): Other in n/a (critical 10.0)
- [CVE-2012-3561](https://insights.sbomify.com/CVE-2012-3561/): Memory corruption in n/a (critical 10.0)
- [CVE-2011-4683](https://insights.sbomify.com/CVE-2011-4683/): Unspecified vulnerability in Opera before 11.60 has unknown impact and attack vectors, related to a "moderately severe issue." (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2003-1387 and fix it if it is affected.

What it is: CVE-2003-1387 is a high-severity memory corruption vulnerability in Opera Opera Browser, published on 19 Oct 2007. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2003-1387 exists.

Affected product: Opera Opera Browser. 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-2003-1387/ (Markdown: https://insights.sbomify.com/CVE-2003-1387/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2003-1387
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2003-1387
- OSV: https://osv.dev/vulnerability/CVE-2003-1387

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From sbomify Insights: https://insights.sbomify.com/CVE-2003-1387/
Summaries are generated and may contain mistakes; the official description above is the record.