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    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 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.

    Published:Jul 24, 2009
    Last Modified:Apr 23, 2026
    EPS:Aug 3, 2009
    EPSS Score:0.13196
    CVSS Score:5.8

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://www.securityfocus.com/archive/1/505242/30/0/threadedhttp://www.securityfocus.com/bid/35803http://www.securityfocus.com/archive/1/505242/30/0/threadedhttp://www.securityfocus.com/bid/35803https://www.exploit-db.com/exploits/33103

    Common Weakness Enumeration

    CWE-20 Improper Input Validation

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

    CVE-2026-84144 (CVSS 7.5) — Internally found bugs present in Thunderbird 154 and Thunderbird ESR 153.1. Some of these bugs showed evidence…
    CVE-2026-84143 (CVSS 9.8) — Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of th…
    CVE-2026-84142 (CVSS 9.8) — Internally found bugs present in Thunderbird 154. Some of these bugs showed evidence of memory corruption or a…
    CVE-2026-84141 (CVSS 9.8) — Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 155, Firefox ESR…
    CVE-2026-84140 (CVSS 9.8) — Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ES…
    CVE-2026-84139 (CVSS 6.1) — Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.…
    CVE-2026-84138 (CVSS 6.5) — Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155…
    CVE-2026-84137 (CVSS 4.3) — Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153…
    CVE-2026-84136 (CVSS 6.1) — Other issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, …
    CVE-2026-84135 (CVSS 9.8) — Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.…

    References

    http://blog.mozilla.com/security/2009/07/28/url-bar-spoofing-vulnerability/
    http://es.geocities.com/jplopezy/firefoxspoofing.html
    http://osvdb.org/56717
    http://secunia.com/advisories/36001
    http://secunia.com/advisories/36126
    http://secunia.com/advisories/36141
    http://secunia.com/advisories/36435
    http://secunia.com/advisories/36669
    http://secunia.com/advisories/36670
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-266148-1
    http://www.debian.org/security/2009/dsa-1873
    http://www.mozilla.org/security/announce/2009/mfsa2009-44.html
    http://www.redhat.com/support/errata/RHSA-2009-1430.html
    http://www.redhat.com/support/errata/RHSA-2009-1431.html
    http://www.redhat.com/support/errata/RHSA-2009-1432.html
    http://www.securityfocus.com/archive/1/505242/30/0/threaded
    http://www.securityfocus.com/archive/1/505265
    http://www.securityfocus.com/bid/35803
    http://www.securitytracker.com/id?1022603
    http://www.vupen.com/english/advisories/2009/2006
    http://www.vupen.com/english/advisories/2009/2142
    https://bugzilla.mozilla.org/show_bug.cgi?id=451898
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9686
    https://usn.ubuntu.com/811-1/
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00198.html
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00261.html
    http://blog.mozilla.com/security/2009/07/28/url-bar-spoofing-vulnerability/
    http://es.geocities.com/jplopezy/firefoxspoofing.html
    http://osvdb.org/56717
    http://secunia.com/advisories/36001
    http://secunia.com/advisories/36126
    http://secunia.com/advisories/36141
    http://secunia.com/advisories/36435
    http://secunia.com/advisories/36669
    http://secunia.com/advisories/36670
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-266148-1
    http://www.debian.org/security/2009/dsa-1873
    http://www.mozilla.org/security/announce/2009/mfsa2009-44.html
    http://www.redhat.com/support/errata/RHSA-2009-1430.html
    http://www.redhat.com/support/errata/RHSA-2009-1431.html
    http://www.redhat.com/support/errata/RHSA-2009-1432.html
    http://www.securityfocus.com/archive/1/505242/30/0/threaded
    http://www.securityfocus.com/archive/1/505265
    http://www.securityfocus.com/bid/35803
    http://www.securitytracker.com/id?1022603
    http://www.vupen.com/english/advisories/2009/2006
    http://www.vupen.com/english/advisories/2009/2142
    https://bugzilla.mozilla.org/show_bug.cgi?id=451898
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9686
    https://usn.ubuntu.com/811-1/
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00198.html
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00261.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High