Opera Web Browser up to 8.53 numeric error

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Opera Web Browser up to 8.53 and classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to numeric error. This vulnerability is documented as CVE-2006-1834. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Opera Web Browser up to 8.53 (Web Browser). This issue affects an unknown part. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Integer signedness error in Opera before 8.54 allows remote attackers to execute arbitrary code via long values in a stylesheet attribute, which pass a length check. NOTE: a sign extension problem makes the attack easier with shorter strings.

The bug was discovered 04/13/2006. The weakness was released 04/19/2006 by ERNE with SEC Consult Unternehmensberatung GmbH (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2006-1834 since 04/19/2006. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 21663 (GLSA-200606-01 : Opera: Buffer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115353 (Opera Web Browser Stylesheet Attribute Buffer Overflow Vulnerability).

Upgrading to version 8.54 eliminates this vulnerability. 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 (25829), Exploit-DB (27641), Tenable (21663), SecurityFocus (BID 17513†) and OSVDB (31744†). Entry connected to this vulnerability is available at VDB-2085. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Opera

Name

• Web Browser

Version

• 8.0
• 8.1
• 8.2
• 8.3
• 8.4
• 8.5
• 8.6
• 8.7
• 8.8
• 8.9
• 8.10
• 8.11
• 8.12
• 8.13
• 8.14
• 8.15
• 8.16
• 8.17
• 8.18
• 8.19
• 8.20
• 8.21
• 8.22
• 8.23
• 8.24
• 8.25
• 8.26
• 8.27
• 8.28
• 8.29
• 8.30
• 8.31
• 8.32
• 8.33
• 8.34
• 8.35
• 8.36
• 8.37
• 8.38
• 8.39
• 8.40
• 8.41
• 8.42
• 8.43
• 8.44
• 8.45
• 8.46
• 8.47
• 8.48
• 8.49
• 8.50
• 8.51
• 8.52
• 8.53

License

• free

Website

• Vendor: https://www.opera.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 21663
Nessus Name: GLSA-200606-01 : Opera: Buffer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 56909
OpenVAS Name: Gentoo Security Advisory GLSA 200606-01 (opera)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Web Browser 8.54

Timelineinfo

04/13/2006 🔍
04/13/2006 +0 days 🔍
04/13/2006 +0 days 🔍
04/13/2006 +0 days 🔍
04/17/2006 +4 days 🔍
04/19/2006 +2 days 🔍
04/19/2006 +0 days 🔍
04/19/2006 +0 days 🔍
05/15/2006 +26 days 🔍
06/07/2006 +23 days 🔍
06/08/2006 +1 days 🔍
03/12/2015 +3199 days 🔍
06/22/2025 +3755 days 🔍

Sourcesinfo

Vendor: opera.com

Advisory: securityfocus.com⛔
Researcher: ERNE
Organization: SEC Consult Unternehmensberatung GmbH
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-1834 (🔍)
GCVE (CVE): GCVE-0-2006-1834
GCVE (VulDB): GCVE-100-29711
X-Force: 25829
SecurityFocus: 17513 - Opera Web Browser Stylesheet Attribute Buffer Overflow Vulnerability
Secunia: 20117 - SUSE Updates for Multiple Packages, Highly Critical
OSVDB: 31744 - CVE-2006-1834 - Opera Software - Opera - Buffer Overflow Issue
SecurityTracker: 1015912
Vulnerability Center: 11131 - Opera Web Browser Buffer Overflow via User-Supplied Long Input, High
Vupen: ADV-2006-1354

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

Entryinfo

Created: 03/12/2015 12:19
Updated: 06/22/2025 05:06
Changes: 03/12/2015 12:19 (77), 06/16/2019 15:24 (14), 01/26/2025 12:44 (20), 06/22/2025 05:06 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

Do you want to use VulDB in your project?

Use the official API to access entries easily!