Google Chrome up to 83.0.4103.88 Developer Tools default permission

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.
5.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Google Chrome. It has been declared as critical. This affects an unknown part of the component Developer Tools. Such manipulation leads to default permission. This vulnerability is uniquely identified as CVE-2020-6495. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Google Chrome (Web Browser) and classified as critical. Affected by this issue is some unknown processing of the component Developer Tools. The manipulation with an unknown input leads to a default permission vulnerability. Using CWE to declare the problem leads to CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Insufficient policy enforcement in developer tools in Google Chrome prior to 83.0.4103.97 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

The weakness was disclosed 06/03/2020. This vulnerability is handled as CVE-2020-6495 since 01/08/2020. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/14/2024). It is expected to see the exploit prices for this product increasing in the near future.The MITRE ATT&CK project declares the attack technique as T1222.

The vulnerability scanner Nessus provides a plugin with the ID 208592 (CentOS 6 : chromium-browser (RHSA-2020:2544)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 83.0.4103.97 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (208592). The entries VDB-156096, VDB-156095, VDB-156094 and VDB-156093 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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

Class: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 208592
Nessus Name: CentOS 6 : chromium-browser (RHSA-2020:2544)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chrome 83.0.4103.97

Timelineinfo

01/08/2020 🔍
06/03/2020 +147 days 🔍
06/04/2020 +1 days 🔍
05/05/2025 +1796 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Status: Confirmed

CVE: CVE-2020-6495 (🔍)
GCVE (CVE): GCVE-0-2020-6495
GCVE (VulDB): GCVE-100-156092
See also: 🔍

Entryinfo

Created: 06/04/2020 16:05
Updated: 05/05/2025 15:11
Changes: 06/04/2020 16:05 (39), 06/04/2020 16:10 (18), 10/14/2024 17:54 (19), 05/05/2025 15:11 (5)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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