Google Chrome prior 80.0.3987.87 Blink HTML Page CSP input validation

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.
4.7$0-$5k0.00

A vulnerability was found in Google Chrome (Web Browser). It has been declared as critical. Affected by this vulnerability is an unknown code block of the component Blink. The manipulation as part of a HTML Page leads to a input validation vulnerability (CSP). The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Insufficient validation of untrusted input in Blink in Google Chrome prior to 80.0.3987.87 allowed a local attacker to bypass content security policy via a crafted HTML page.

The weakness was released 02/11/2020. This vulnerability is known as CVE-2020-6391 since 01/08/2020. An attack has to be approached locally. The requirement for exploitation is a single authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/12/2020). It is expected to see the exploit prices for this product increasing in the near future.

Upgrading to version 80.0.3987.87 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-150005, VDB-150004, VDB-150003 and VDB-150002. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: CSP
Class: Input validation / CSP
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chrome 80.0.3987.87

Timelineinfo

01/08/2020 🔍
02/11/2020 +34 days 🔍
02/12/2020 +1 days 🔍
03/30/2024 +1508 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: RHSA-2020:0514
Status: Not defined

CVE: CVE-2020-6391 (🔍)
GCVE (CVE): GCVE-0-2020-6391
GCVE (VulDB): GCVE-100-150001
See also: 🔍

Entryinfo

Created: 02/12/2020 07:45 AM
Updated: 03/30/2024 10:05 AM
Changes: 02/12/2020 07:45 AM (41), 02/12/2020 07:50 AM (18), 03/30/2024 10:05 AM (19)
Complete: 🔍
Cache ID: 18:D22:40

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