Vulnerabilities > CVE-2004-2491 - Race Condition vulnerability in Opera Browser

047910
CVSS 2.6 - LOW
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
high complexity
opera
CWE-362
nessus
exploit available

Summary

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.

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leveraging Race Conditions
    This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.

Exploit-Db

descriptionOpera Web Browser 7.53 Location Replace URI Obfuscation Weakness. CVE-2004-2491. Remote exploits for multiple platform
idEDB-ID:24325
last seen2016-02-02
modified2004-07-27
published2004-07-27
reporterbitlance winter
sourcehttps://www.exploit-db.com/download/24325/
titleOpera Web Browser 7.53 Location Replace URI Obfuscation Weakness

Nessus

NASL familyWindows
NASL idOPERA_URI_OBFUSCATION.NASL
descriptionThe version of Opera installed on the remote host is vulnerable to a flaw wherein a remote attacker can obscure the URI, leading the user to believe that he/she is accessing a trusted resource. To exploit this issue, an attacker would need to set up a rogue website, then entice a local user to visit the site. Successful exploitation would enable the attacker to execute arbitrary code on this host.
last seen2020-06-01
modified2020-06-02
plugin id14235
published2004-08-09
reporterThis script is Copyright (C) 2004-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/14235
titleOpera < 7.54 Multiple Function Address Bar Spoofing