Opera DHTML background property denial of service

opera-dhtml-background-dos (27977)

Medium Risk

Description:

Opera is vulnerable to a denial of service, caused by a memory corruption issue that can occur when the "background" property of a DHTML element is set to an overly long HTTP or HTTPS URL. A remote attacker could exploit this vulnerability to cause a victim's browser to crash, if the attacker could persuade the victim to visit a malicious Web page.

*CVSS:

Base Score:	3.5
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Partial
Temporal Score:	2.6
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of Opera (9.01 or later), available from the Opera Web site. See References.

References:

• Browser Fun Blog, Tuesday, July 25, 2006: MoBB #26: Opera CSS Background .
• BID-19166: RETIRED: Opera Web Browser CSS Background URI Memory Corruption Vulnerability
• CVE-2006-3945: The CSS functionality in Opera 9 on Windows XP SP2 allows remote attackers to cause a denial of service (crash) by setting the background property of a DHTML element to a long http or https URL, which triggers memory corruption.
• VUPEN/ADV-2006-2987: Opera Web Browser Background Style URI Handling Remote Memory Corruption Vulnerability

Platforms Affected:

• Opera Opera Browser 9.0

Reported:

Jul 25, 2006

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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