Google Chrome prior 83.0.4103.116 Extensions use after free

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 (≈)
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CTI Interest Score
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7.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Google Chrome. It has been declared as critical. This affects an unknown function of the component Extensions. The manipulation results in use after free. This vulnerability is reported as CVE-2020-6509. 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). It has been classified as critical. Affected is some unknown processing of the component Extensions. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Use after free in extensions in Google Chrome prior to 83.0.4103.116 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 07/22/2020 (Website). The advisory is shared for download at chromereleases.googleblog.com. This vulnerability is traded as CVE-2020-6509 since 01/08/2020. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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 07/23/2020). It is expected to see the exploit prices for this product increasing in the near future.

Upgrading to version 83.0.4103.116 eliminates this vulnerability.

The entries VDB-158896, VDB-158895, VDB-158894 and VDB-158893 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.8

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.6
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: Use after free
CWE: CWE-416 / CWE-119
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chrome 83.0.4103.116

Timelineinfo

01/08/2020 🔍
07/22/2020 +196 days 🔍
07/23/2020 +1 days 🔍
07/23/2020 +0 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: chromereleases.googleblog.com
Status: Not defined

CVE: CVE-2020-6509 (🔍)
GCVE (CVE): GCVE-0-2020-6509
GCVE (VulDB): GCVE-100-158892
See also: 🔍

Entryinfo

Created: 07/23/2020 09:37
Updated: 07/23/2020 09:42
Changes: 07/23/2020 09:37 (42), 07/23/2020 09:42 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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