Executive Summary

Name CVE-2004-2491 First vendor Publication 2004-12-31
Vendor Cve Last vendor Modification 2017-07-11

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:H/Au:N/C:N/I:P/A:N)
Cvss Base Score 2.6 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity High
Cvss Expoit Score 4.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


A race condition in Opera web browser 7.53 Build 3850 causes Opera to fill in the address bar before the page has been loaded, which allows remote attackers to spoof the URL in the address bar via the window.open and location.replace HTML parameters, which facilitates phishing attacks.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2491

CAPEC : Common Attack Pattern Enumeration & Classification

Id Name
CAPEC-26 Leveraging Race Conditions
CAPEC-29 Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions

CWE : Common Weakness Enumeration

% Id Name

CPE : Common Platform Enumeration

Application 1

Open Source Vulnerability Database (OSVDB)

Id Description
8317 Opera Multiple Function Address Bar Spoofing

Opera contains a flaw that may allow a malicious user to spoof a trusted Web page. The issue is triggered when a remote attacker alters the opera address bar with the window.open and location.replace functions, which will load other page contents while keeping the URL. By crafting a specially-crafted web page, a remote attacker can spoof a trusted website to trick users into visiting a malicious Web site and possibly retrieve sensitive information, resulting in a loss of integrity.

Nessus® Vulnerability Scanner

Date Description
2004-08-09 Name : The remote host has application that may allow arbitrary code execution on th...
File : opera_URI_obfuscation.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/10810
CONFIRM http://www.opera.com/windows/changelogs/754/
FULLDISC http://archives.neohapsis.com/archives/fulldisclosure/2004-07/1056.html
OSVDB http://www.osvdb.org/8317
SECUNIA http://secunia.com/advisories/12162
XF https://exchange.xforce.ibmcloud.com/vulnerabilities/16816

Alert History

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Date Informations
2021-05-04 12:02:38
  • Multiple Updates
2021-04-22 01:02:50
  • Multiple Updates
2020-05-23 00:16:11
  • Multiple Updates
2017-07-11 12:01:44
  • Multiple Updates
2016-06-28 15:11:55
  • Multiple Updates
2016-04-26 13:10:12
  • Multiple Updates
2014-02-17 10:29:27
  • Multiple Updates
2013-05-11 11:49:16
  • Multiple Updates