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.
9.0	$0-$5k	0.00

A vulnerability was found in Opera Web Browser up to 7.19 (Web Browser). It has been rated as critical. This issue affects an unknown function of the component Certificates. The manipulation with an unknown input leads to a cryptographic issues vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Unspecified vulnerability in Opera before 9.25 allows remote attackers to execute arbitrary code via crafted TLS certificates.

The bug was discovered 12/19/2007. The weakness was shared 12/24/2007 by Gynvael Coldwind (Alex) (Website). The advisory is shared at opera.com. The identification of this vulnerability is CVE-2007-6521 since 12/24/2007. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 29771 (FreeBSD : opera -- multiple vulnerabilities (31b045e7-ae75-11dc-a5f9-001a4d49522b)), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165035 (SUSE Security Update for Opera (SUSE-SA:2008:001)).

Upgrading to version 7.20 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (39161) and Tenable (29771). The entries 40232, 40231, 40230 and 40228 are related to this item.

Productinfo

Type

• Web Browser

Vendor

• Opera

Name

• Web Browser

Version

• 7.0
• 7.1
• 7.2
• 7.3
• 7.4
• 7.5
• 7.6
• 7.7
• 7.8
• 7.9
• 7.10
• 7.11
• 7.12
• 7.13
• 7.14
• 7.15
• 7.16
• 7.17
• 7.18
• 7.19

License

• free

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
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: Cryptographic issues
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 29771
Nessus Name: FreeBSD : opera -- multiple vulnerabilities (31b045e7-ae75-11dc-a5f9-001a4d49522b)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 60053
OpenVAS Name: FreeBSD Ports: opera, opera-devel, linux-opera
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Web Browser 7.20

Timelineinfo

12/19/2007 🔍
12/19/2007 +0 days 🔍
12/19/2007 +0 days 🔍
12/19/2007 +0 days 🔍
12/19/2007 +0 days 🔍
12/24/2007 +5 days 🔍
12/24/2007 +0 days 🔍
12/24/2007 +0 days 🔍
12/24/2007 +0 days 🔍
12/25/2007 +1 days 🔍
03/16/2015 +2638 days 🔍
08/01/2019 +1599 days 🔍

Sourcesinfo

Vendor: opera.com

Advisory: opera.com
Researcher: Gynvael Coldwind (Alex)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-6521 (🔍)
X-Force: 39161
SecurityTracker: 1019131
Vulnerability Center: 17164 - Opera Web Browser < 9.25 Remote Code Execution via Crafted TLS Certificates, Medium
SecurityFocus: 26937 - Opera Web Browser Multiple Security Vulnerabilities
Secunia: 28169
OSVDB: 42694 - CVE-2007-6521 - Opera Software - Opera - Code Execution Issue
Vupen: ADV-2007-4261

See also: 🔍

Entryinfo

Created: 03/16/2015 13:43
Updated: 08/01/2019 20:59
Changes: 03/16/2015 13:43 (75), 08/01/2019 20:59 (12)
Complete: 🔍

Discussion

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