CVE-2009-1839

Mozilla Firefox < 3.0.11 - File URL Principal Bypass via Location Bar

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-1839. PoCs published by Jordi Chancel.

AI-analyzed exploit summary This exploit demonstrates a location bar spoofing vulnerability in Mozilla Firefox by injecting content into a blank page while displaying a misleading URL. It leverages JavaScript to manipulate the location bar and stop page loading, creating a spoofing attack.

Description

Mozilla Firefox 3 before 3.0.11 associates an incorrect principal with a file: URL loaded through the location bar, which allows user-assisted remote attackers to bypass intended access restrictions and read files via a crafted HTML document, aka a "file-URL-to-file-URL scripting" attack.

Exploits (1)

exploitdb WORKING POC VERIFIED

by Jordi Chancel · htmllocalmultiple

https://www.exploit-db.com/exploits/10544

View Code ZIP pw:eip

This exploit demonstrates a location bar spoofing vulnerability in Mozilla Firefox by injecting content into a blank page while displaying a misleading URL. It leverages JavaScript to manipulate the location bar and stop page loading, creating a spoofing attack.

Classification

Working Poc 90%

Attack Type

Other

Complexity

Trivial

Reliability

Reliable

Target: Mozilla Firefox 3.0.15 & 3.5.5

No auth needed

Prerequisites: Victim must visit a malicious webpage

MITRE ATT&CK

T1055 - Process Injection T1059 - Command and Scripting Interpreter

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (18)

Core 18

Core References

Vendor Advisory vendor-advisory x_refsource_sunalert

http://sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1

Vendor Advisory vendor-advisory x_refsource_slackware

http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.372468

Issue Tracking x_refsource_confirm

https://bugzilla.mozilla.org/show_bug.cgi?id=479943

Patch, Vendor Advisory vdb-entry x_refsource_vupen

http://www.vupen.com/english/advisories/2009/1572

Issue Tracking x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=503581

Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9256

Patch vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/35326

Vendor Advisory vendor-advisory x_refsource_fedora

https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00657.html

Vendor Advisory x_refsource_confirm

http://www.mozilla.org/security/announce/2009/mfsa2009-30.html

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35431

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35331

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35468

Vendor Advisory vendor-advisory x_refsource_fedora

https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00574.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35415

Vendor Advisory vendor-advisory x_refsource_redhat

https://rhn.redhat.com/errata/RHSA-2009-1095.html

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/35386

Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb

http://osvdb.org/55163

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2009/dsa-1820

Scores

EPSS 0.0712

EPSS Percentile 93.4%

Details

CWE

CWE-264

Status published

Products (13)

mozilla/firefox 3.0 (4 CPE variants)

mozilla/firefox 3.0.1

mozilla/firefox 3.0.2

mozilla/firefox 3.0.3

mozilla/firefox 3.0.4

mozilla/firefox 3.0.5

mozilla/firefox 3.0.6

mozilla/firefox 3.0.7

mozilla/firefox 3.0.8

mozilla/firefox 3.0.9

... and 3 more

Published Jun 12, 2009

Tracked Since Feb 18, 2026