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Opera Web Browser fails to properly process overly long URLs

Vulnerability Note VU#484380

Original Release Date: 2006-10-24 | Last Revised: 2006-10-24


The Opera Web Browser fails to properly process overly long URLs. This vulnerability may allow arbitrary code execution.


Opera is a multi-platform web browser that is available for a range of operating systems and embedded Internet products. Opera contains a heap buffer overflow vulnerability in the way that it parses tags containing long URLs. This vulnerability could be exploited by a remote attacker with the ability to construct a web page containing a specially crafted malicious tag and the ability to coerce an Opera user into visiting the page.


A remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the user running the vulnerable version of Opera or cause the browser to crash, resulting in a denial of service condition.



Opera has released an update to address this issue. See Opera Advisory 848 for more details.

Do not follow untrusted links

Do not open unfamiliar or unexpected links, particularly those delivered in email messages. Please see Cyber Security Tip ST04-014.

Vendor Information


Opera Affected

Updated:  October 24, 2006



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


Refer to Opera Advisory 848 .

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector



This vulnerability was reported in Opera Advisory 848 . Opera credits iDefense Labs for reporting this issue.

This document was written by Chris Taschner.

Other Information

CVE IDs: CVE-2006-4819
Severity Metric: 10.14
Date Public: 2006-10-17
Date First Published: 2006-10-24
Date Last Updated: 2006-10-24 19:26 UTC
Document Revision: 14

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