Opera Web Browser up to 9.10 data URI unknown vulnerability

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Opera Web Browser (Web Browser). It has been classified as critical. This affects an unknown function of the component data URI Handler. This is going to have an impact on integrity. The summary by CVE is:

Opera 7.54 and earlier does not properly validate base64 encoded binary data in a data: (RFC 2397) URL, which causes the URL to be obscured in a download dialog, which may allow remote attackers to trick users into executing arbitrary code.

The weakness was presented 01/12/2005 by Michael Holzt with Opera (Website). The advisory is shared at secunia.com. This vulnerability is uniquely identified as CVE-2005-0456 since 02/17/2005. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but an exploit is available.

After even before and not, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 18865 (FreeBSD : opera -- 'data:' URI handler spoofing vulnerability (20c9bb14-81e6-11d9-a9e7-0001020eed82)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at opera.com. The problem might be mitigated by replacing the product with as an alternative. The best possible mitigation is suggested to be establishing an alternative product. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (18867) and Tenable (18865). See 1050 for similar entry.







CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
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Class: Unknown
CWE: Unknown
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

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Current Price Estimation: 🔍


Nessus ID: 18865
Nessus Name: FreeBSD : opera -- 'data:' URI handler spoofing vulnerability (20c9bb14-81e6-11d9-a9e7-0001020eed82)
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OpenVAS ID: 52183
OpenVAS Name: FreeBSD Ports: opera, opera-devel, linux-opera
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: Alternative
Status: 🔍

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Patch: opera.com


01/11/2005 🔍
01/12/2005 +1 days 🔍
01/12/2005 +0 days 🔍
01/12/2005 +0 days 🔍
01/12/2005 +0 days 🔍
01/17/2005 +4 days 🔍
02/14/2005 +28 days 🔍
02/17/2005 +3 days 🔍
02/17/2005 +0 days 🔍
02/18/2005 +1 days 🔍
07/13/2005 +145 days 🔍
07/25/2005 +12 days 🔍
03/10/2021 +5707 days 🔍


Vendor: opera.com

Advisory: secunia.com
Researcher: Michael Holzt
Organization: Opera
Status: Not defined
Confirmation: 🔍

CVE: CVE-2005-0456 (🔍)
X-Force: 18867 - Opera data: URI dialog spoofing, Medium Risk
Vulnerability Center: 8668 - Opera <= 7.54 Allows Obscuration of URL in a Download Dialog, Medium
SecurityFocus: 12550 - Opera Web Browser Multiple Remote Vulnerabilities
Secunia: 13818 - Opera "data:" URI Handler Spoofing Vulnerability, Moderately Critical
OSVDB: 12867 - Opera data: URI Handler Application Spoofing

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍


Created: 01/17/2005 02:40 PM
Updated: 03/10/2021 01:26 PM
Changes: 01/17/2005 02:40 PM (92), 04/22/2019 10:51 AM (5), 03/10/2021 01:26 PM (2)
Complete: 🔍


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